:root {
    /* UI/UX Pro Max Palette - Medical Tech */
    /* Primary: Trust Blue & Innovation Teal */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    /* Base Blue */
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    --accent-50: #f0fdfa;
    --accent-500: #14b8a6;
    /* Teal for highlights */

    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;

    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;

    /* Glassmorphism & Effects */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-bg-hover: rgba(255, 255, 255, 0.85);
    --glass-bg-dark: rgba(15, 23, 42, 0.6);
    --glass-border: 1px solid rgba(255, 255, 255, 0.65);
    --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
    --backdrop-blur: blur(20px);
    --backdrop-blur-sm: blur(10px);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    --gradient-accent: linear-gradient(135deg, var(--primary-500), var(--accent-500));
    --gradient-surface: linear-gradient(145deg, #ffffff, #f1f5f9);
    --gradient-bg:
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(20, 184, 166, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(99, 102, 241, 0.1) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(168, 162, 158, 0.1) 0px, transparent 50%),
        #f8fafc;

    /* Design Tokens */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-heading: 'Plus Jakarta Sans', sans-serif;
    --font-number: 'Inter', 'SF Mono', 'Cascadia Code', 'Consolas', monospace;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.025);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 15px rgba(59, 130, 246, 0.4);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.02);

    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ==========================================
   Dark Mode
   ========================================== */
[data-theme="dark"] {
    --primary-50: #172554;
    --primary-100: #1e3a5f;
    --primary-200: #1e40af;
    --primary-300: #2563eb;
    --primary-400: #3b82f6;
    --primary-500: #60a5fa;
    --primary-600: #93c5fd;
    --primary-700: #bfdbfe;
    --primary-800: #dbeafe;
    --primary-900: #eff6ff;

    --accent-50: #042f2e;
    --accent-500: #2dd4bf;

    --slate-50: #0f172a;
    --slate-100: #1e293b;
    --slate-200: #334155;
    --slate-300: #475569;
    --slate-400: #94a3b8;
    --slate-500: #cbd5e1;
    --slate-600: #e2e8f0;
    --slate-700: #f1f5f9;
    --slate-800: #f8fafc;
    --slate-900: #ffffff;

    --glass-bg: rgba(15, 23, 42, 0.75);
    --glass-bg-hover: rgba(15, 23, 42, 0.88);
    --glass-border: 1px solid rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);

    --gradient-surface: linear-gradient(145deg, #1e293b, #0f172a);
    --gradient-bg:
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(20, 184, 166, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(99, 102, 241, 0.1) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(168, 162, 158, 0.05) 0px, transparent 50%),
        #0f172a;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.35), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 15px rgba(96, 165, 250, 0.3);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.15);

    color-scheme: dark;
}

[data-theme="dark"] .search-box {
    background: rgba(30, 41, 59, 0.9);
}

[data-theme="dark"] .search-box:focus-within {
    background: rgba(30, 41, 59, 1);
    border-color: var(--primary-400);
}

[data-theme="dark"] .search-box input {
    color: var(--slate-800);
}

[data-theme="dark"] .card-header {
    background: rgba(30, 41, 59, 0.5);
}

[data-theme="dark"] .record-header {
    background: linear-gradient(to right, #1e293b, #0f172a);
    border-bottom-color: var(--slate-200);
}

[data-theme="dark"] .identity-card {
    background: var(--slate-100);
    border-color: var(--slate-200);
}

[data-theme="dark"] .identity-card .record-header {
    background: linear-gradient(to right, #1e293b, var(--slate-100));
}

[data-theme="dark"] .record-content-wrapper {
    background: var(--slate-100);
}

[data-theme="dark"] .other-fields-section {
    background: var(--slate-50);
    border-top-color: var(--slate-200);
}

[data-theme="dark"] .structure-frame {
    background: var(--slate-100);
    border-color: var(--slate-200);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .data-table input[type="text"],
[data-theme="dark"] .data-table input[type="number"] {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--slate-800);
}

[data-theme="dark"] .form-input {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--slate-800);
}

[data-theme="dark"] .modal-content {
    background: var(--slate-100);
}

[data-theme="dark"] .modal-header {
    border-bottom-color: var(--slate-200);
}

[data-theme="dark"] .modal-footer {
    border-top-color: var(--slate-200);
}

[data-theme="dark"] .config-modal {
    background: rgba(30, 41, 59, 0.92);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .config-header {
    border-bottom-color: var(--slate-200);
}

[data-theme="dark"] .config-footer {
    background: var(--slate-50);
    border-top-color: var(--slate-200);
}

[data-theme="dark"] .config-input-group input {
    background: var(--slate-50);
    border-color: var(--slate-200);
    color: var(--slate-800);
}

[data-theme="dark"] .toast {
    background: rgba(30, 41, 59, 0.95);
    border-color: var(--slate-200);
}

[data-theme="dark"] .toast-message {
    color: var(--slate-800);
}

[data-theme="dark"] .autocomplete-dropdown {
    background: rgba(30, 41, 59, 0.98);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .cas-display {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.9));
}

[data-theme="dark"] .location-badge {
    background: #422006;
    border-color: #92400e;
    color: #fcd34d;
}

[data-theme="dark"] .location-badge:hover {
    background: #451a03;
}

[data-theme="dark"] .pairs-wrapper {
    background: var(--slate-50);
}

[data-theme="dark"] .spectrum-structure-row {
    background: var(--slate-100);
    border-color: var(--slate-200);
}

[data-theme="dark"] .record-footer {
    background: var(--slate-50);
    border-top-color: var(--slate-200);
}

[data-theme="dark"] .calibration-panel {
    background: var(--slate-100);
    border-color: var(--slate-200);
}

[data-theme="dark"] .calibration-panel .card-header {
    background: var(--slate-100);
    border-bottom-color: var(--slate-200);
}

[data-theme="dark"] .pin-btn,
[data-theme="dark"] .settings-btn {
    background: rgba(30, 41, 59, 0.5);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .pin-btn:hover,
[data-theme="dark"] .settings-btn:hover {
    background: var(--slate-100);
}

[data-theme="dark"] .logo-icon {
    background: linear-gradient(135deg, var(--slate-100), var(--slate-50));
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .data-table thead {
    background: var(--slate-100);
}

[data-theme="dark"] .data-table tr:hover td {
    background-color: rgba(59, 130, 246, 0.1);
}

[data-theme="dark"] .confirm-detail {
    background: var(--slate-50);
    border-color: var(--slate-200);
}

[data-theme="dark"] .empty-content {
    color: var(--slate-400);
    border-color: var(--slate-200);
}

[data-theme="dark"] .equation-preview {
    background: var(--slate-50);
    border-color: var(--slate-200);
}

[data-theme="dark"] .mnova-file-link {
    background: var(--slate-100);
    border-color: var(--slate-200);
}

[data-theme="dark"] .type-tag.type-溶剂,
[data-theme="dark"] .type-tag.type-solvent {
    background: #1e3a5f;
    color: #93c5fd;
    border-color: #1e40af;
}

[data-theme="dark"] .type-tag.type-添加剂,
[data-theme="dark"] .type-tag.type-additive {
    background: #4c0519;
    color: #fda4af;
    border-color: #9f1239;
}

[data-theme="dark"] .type-tag.type-主盐,
[data-theme="dark"] .type-tag.type-salt {
    background: #451a03;
    color: #fcd34d;
    border-color: #92400e;
}

/* Dark: buttons & interactive elements */
[data-theme="dark"] .primary-btn {
    box-shadow: 0 4px 12px rgba(96, 165, 250, 0.3);
}

[data-theme="dark"] .primary-btn:hover {
    box-shadow: 0 10px 20px rgba(96, 165, 250, 0.4);
}

[data-theme="dark"] .attachment-btn {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--slate-700);
}

[data-theme="dark"] .attachment-btn:hover {
    background: var(--slate-200);
    border-color: var(--primary-400);
    color: var(--primary-600);
}

[data-theme="dark"] .attachment-upload-btn {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--accent-500);
}

[data-theme="dark"] .attachment-upload-btn:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
}

[data-theme="dark"] .reload-record-btn {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--slate-700);
}

[data-theme="dark"] .reload-record-btn:hover:not(:disabled) {
    background: #422006;
    border-color: #f59e0b;
    color: #fcd34d;
}

[data-theme="dark"] .badge {
    background: var(--primary-50);
    border-color: var(--primary-200);
}

[data-theme="dark"] .badge:hover {
    background: var(--primary-100);
    border-color: var(--primary-300);
}

[data-theme="dark"] .record-row-btn {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--slate-700);
}

[data-theme="dark"] .record-row-btn:hover {
    background: var(--primary-50);
    border-color: var(--primary-400);
}

[data-theme="dark"] .delete-row-btn:hover {
    background: rgba(239, 68, 68, 0.15);
}

[data-theme="dark"] .add-row-btn-inline {
    box-shadow: none;
}

[data-theme="dark"] .fid-download-btn {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--slate-700);
}

[data-theme="dark"] .fid-download-btn:hover {
    background: var(--primary-50);
    border-color: var(--primary-400);
}

[data-theme="dark"] .expand-spectra-btn {
    background: var(--primary-50);
    border-color: var(--primary-300);
}

[data-theme="dark"] .expand-spectra-btn:hover {
    background: var(--primary-100);
}

[data-theme="dark"] .refresh-button,
[data-theme="dark"] .expand-button {
    background: transparent;
    border-color: var(--slate-200);
    color: var(--slate-600);
}

[data-theme="dark"] .refresh-button:hover:not(:disabled),
[data-theme="dark"] .expand-button:hover {
    background: var(--primary-50);
}

[data-theme="dark"] .save-btn {
    box-shadow: none;
}

[data-theme="dark"] .cancel-btn {
    background: var(--slate-200);
    color: var(--slate-700);
}

[data-theme="dark"] .cancel-btn:hover:not(:disabled) {
    background: var(--slate-300);
}

/* Dark: card & container backgrounds */
[data-theme="dark"] .main-header.scrolled {
    background: rgba(15, 23, 42, 0.9);
}

[data-theme="dark"] .result-card::after,
[data-theme="dark"] .cas-display::after {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
}

[data-theme="dark"] .result-card:hover,
[data-theme="dark"] .cas-display:hover {
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: var(--shadow-2xl), 0 0 30px rgba(96, 165, 250, 0.1);
}

[data-theme="dark"] .record-item-container:hover {
    background-color: rgba(30, 41, 59, 0.5);
}

[data-theme="dark"] .data-grid {
    background: transparent;
}

[data-theme="dark"] .file-link {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--slate-700);
}

[data-theme="dark"] .file-link:hover {
    background: var(--slate-200);
    border-color: var(--primary-500);
}

[data-theme="dark"] .image-box img {
    border-color: var(--slate-200);
}

[data-theme="dark"] .calc-input {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--slate-800);
}

[data-theme="dark"] .calc-input:focus {
    border-color: var(--primary-400);
}

[data-theme="dark"] .location-input {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--slate-800);
}

[data-theme="dark"] .location-inline-input {
    background: var(--slate-100);
    border-color: #f59e0b;
    color: var(--slate-800);
}

[data-theme="dark"] .edit-location-icon {
    color: var(--primary-500);
}

[data-theme="dark"] .edit-location-icon:hover {
    background: var(--primary-50);
}

[data-theme="dark"] .upload-file-icon {
    color: var(--accent-500);
}

[data-theme="dark"] .upload-file-icon:hover {
    background: rgba(45, 212, 191, 0.1);
}

[data-theme="dark"] .location-edit-btn {
    color: #fcd34d;
}

[data-theme="dark"] .location-edit-btn:hover {
    background: rgba(251, 191, 36, 0.15);
}

/* Dark: error & status */
[data-theme="dark"] .error-message {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

[data-theme="dark"] .config-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

[data-theme="dark"] .upload-loading-toast {
    background: #065f46;
}

/* Dark: pin button active state */
[data-theme="dark"] .pin-btn.pinned {
    background: var(--primary-50);
    border-color: var(--primary-200);
}

[data-theme="dark"] .pin-btn.pinned:hover {
    background: var(--primary-100);
}

/* Dark: autocomplete items */
[data-theme="dark"] .autocomplete-item:hover,
[data-theme="dark"] .autocomplete-item.selected {
    background: rgba(59, 130, 246, 0.1);
}

[data-theme="dark"] .autocomplete-item.selected {
    background: rgba(59, 130, 246, 0.18);
}

[data-theme="dark"] .autocomplete-dropdown mark {
    background: rgba(96, 165, 250, 0.25);
    color: var(--primary-600);
}

/* Dark: modal overlay */
[data-theme="dark"] .modal-overlay {
    background: rgba(0, 0, 0, 0.65);
}

/* Theme toggle button */
.theme-btn {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-full);
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--slate-400);
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.theme-btn:hover {
    background: white;
    color: var(--primary-500);
    border-color: var(--primary-200);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .theme-btn {
    background: rgba(30, 41, 59, 0.5);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .theme-btn:hover {
    background: var(--slate-100);
}

.theme-btn .icon-sun,
.theme-btn .icon-moon { display: none; }
.theme-btn .icon-sun { display: block; }
[data-theme="dark"] .theme-btn .icon-sun { display: none; }
[data-theme="dark"] .theme-btn .icon-moon { display: block; }

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-sans);
    background: var(--gradient-bg);
    background-attachment: fixed;
    color: var(--slate-800);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    padding-bottom: 2rem;
}

/* Layout */
.app-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Header */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    padding: 0.875rem 2rem;
    position: sticky;
    top: 1.5rem;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: var(--glass-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--glass-shadow), var(--shadow-lg);
    transition: var(--transition);
}

.main-header:hover {
    background: var(--glass-bg-hover);
    box-shadow: var(--glass-shadow), var(--shadow-xl);
}

.main-header.scrolled {
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.9);
}

/* 向下滚动时隐藏顶部导航栏 */
.main-header.header-hidden {
    transform: translateY(calc(-100% - 2rem));
    opacity: 0;
    pointer-events: none;
}

.logo-area {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    text-align: left;
    text-decoration: none;
    cursor: pointer;
}

.logo-icon {
    font-size: 3rem;
    background: linear-gradient(135deg, white, #f0f9ff);
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: var(--transition-bounce);
}

.logo-area:hover .logo-icon {
    transform: rotate(10deg) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.logo-text h1 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--slate-900);
    letter-spacing: -0.04em;
    line-height: 1.2;
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--primary-600);
    /* Fallback */
    display: inline-block;
    transition: var(--transition);
}

.logo-area:hover .highlight {
    filter: brightness(1.1);
    transform: scale(1.02);
}

/* Search Hero */
.search-hero {
    max-width: 768px;
    margin: 0 auto;
    width: 100%;
}

.nav-search {
    flex: 1;
    display: flex;
    justify-content: center;
    /* Centered for premium feel */
}

.nav-search .search-box {
    width: min(600px, 100%);
    padding: 0.5rem;
}

.search-box {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    padding: 0.5rem;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md), var(--shadow-inner);
    border: 2px solid transparent;
    /* Prepare for border transition */
    transition: var(--transition-bounce);
    outline: 2px solid transparent;
}

.search-box:focus-within {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    background: white;
    border-color: var(--primary-300);
}

.search-icon {
    padding: 0 1rem 0 1.5rem;
    color: var(--slate-400);
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.search-box:focus-within .search-icon {
    color: var(--primary-500);
    transform: scale(1.1);
}

.search-box input {
    flex: 1;
    border: none;
    font-size: 1.1rem;
    color: var(--slate-800);
    outline: none;
    padding: 0.6rem 0;
    font-family: var(--font-sans);
    background: transparent;
    font-weight: 500;
}

.search-box input::placeholder {
    color: var(--slate-400);
    font-weight: 400;
}

.primary-btn {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 0.85rem 2.25rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.02em;
}

.primary-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 60%);
    opacity: 0;
    transform: scale(0.5);
    transition: transform 0.6s, opacity 0.6s;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.5);
}

.primary-btn:hover::after {
    opacity: 1;
    transform: scale(1);
}

.primary-btn:active {
    transform: translateY(0);
}

/* Results Area */
.results-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Cards */
.result-card,
.cas-display {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl), var(--glass-shadow);
    border: var(--glass-border);
    overflow: hidden;
    transition: var(--transition-bounce);
    position: relative;
    /* For glow effects */
}

.result-card::after,
.cas-display::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    padding: 1px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0.1));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.result-card:hover,
.cas-display:hover {
    transform: translateY(-4px) scale(1.005);
    box-shadow: var(--shadow-2xl), 0 0 30px rgba(59, 130, 246, 0.15);
    border-color: rgba(255, 255, 255, 0.9);
}

.result-card {
    overflow: visible;
}

.cas-display {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(240, 249, 255, 0.9));
}

.cas-display h2 {
    font-family: var(--font-heading);
    background: linear-gradient(135deg, var(--slate-900), var(--primary-700));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.card-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
}

.calibration-panel {
    margin: 0 2rem 2rem;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.calibration-panel .card-header {
    background: white;
    border-bottom: 1px solid var(--slate-100);
}

/* 表格内输入框 */
.data-table input[type="text"],
.data-table input[type="number"] {
    width: 100%;
    padding: 0.5rem 0.625rem;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-family: var(--font-sans);
    transition: var(--transition-fast);
    background: white;
}

.data-table input:focus {
    outline: none;
    border-color: var(--primary-400);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.data-table input:disabled {
    background: var(--slate-50);
    color: var(--slate-500);
    cursor: not-allowed;
}

/* 表单下拉选择框样式 */
.form-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.875rem center;
    background-size: 12px;
    padding-right: 2.5rem !important;
    cursor: pointer;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-select option {
    padding: 0.5rem;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--slate-800);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.card-cas {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-700);
    background: var(--primary-50);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    white-space: nowrap;
    border: 1px solid var(--primary-100);
    box-shadow: var(--shadow-sm);
}

.card-title::before {
    content: '';
    display: block;
    width: 6px;
    height: 28px;
    background: var(--gradient-primary);
    border-radius: 4px;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.4);
}

.badge {
    background: var(--primary-50);
    color: var(--primary-600);
    padding: 0.4rem 1.2rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid var(--primary-100);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.badge:hover {
    background: white;
    border-color: var(--primary-200);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Record Item Container - 新层级布局 */
.record-item-container {
    border-bottom: 1px solid var(--slate-100);
    transition: background-color 0.2s;
}

.record-item-container:hover {
    background-color: rgba(248, 250, 252, 0.5);
}

.record-item-container:last-child {
    border-bottom: none;
}

.record-layout {
    display: grid;
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 3rem;
    padding: 2.5rem;
}

.record-left {
    position: sticky;
    top: 1.5rem;
    align-self: start;
    max-height: calc(100vh - 3rem);
    overflow: auto;
    padding-right: 0.25rem;
}

.record-right {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    min-width: 0;
}

.identity-card {
    background: white;
    /* Internal cards fit better as white within glass container */
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--slate-200);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.identity-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-300);
}

.identity-card .record-header {
    padding: 1.25rem 1.5rem 1rem;
    border-bottom: 1px solid var(--slate-100);
    background: linear-gradient(to right, #f8fafc, white);
}

.identity-card .title-row {
    flex-wrap: wrap;
    margin-bottom: 0.25rem;
}

.identity-card .compound-name {
    flex: 1 1 auto;
    min-width: 0;
    word-break: break-word;
    font-size: 1.35rem;
}

.identity-card .meta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.identity-card .cas-number {
    margin: 0;
    font-size: 0.9rem;
}

.identity-card .type-tag {
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
}

.structure-card {
    padding: 0.75rem 1.25rem 1rem;
    border-bottom: 1px solid var(--slate-100);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.structure-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--slate-500);
    font-weight: 600;
}

.structure-subtitle {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--slate-400);
    font-weight: 600;
}

.structure-frame {
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
    position: relative;
}

.structure-3d-viewer {
    width: 100%;
    height: 180px;
    position: relative;
}

.structure-3d-viewer canvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
    outline: none;
}

.structure-3d-frame {
    padding: 0;
    min-height: 180px;
    position: relative;
    border: none;
    box-shadow: none;
    background: transparent;
}

.structure-3d-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--slate-400);
    font-size: 0.875rem;
    background: var(--slate-50);
}

.structure-3d-frame.is-ready .structure-3d-placeholder {
    display: none;
}

.structure-3d-frame.is-error .structure-3d-viewer {
    display: none;
}

.structure-2d-frame {
    min-height: 150px;
}

.structure-2d-image {
    width: 100%;
    height: auto;
    max-height: 160px;
    object-fit: contain;
}

.structure-placeholder {
    color: var(--slate-400);
    font-size: 0.875rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
}

.structure-status {
    font-size: 0.75rem;
    color: var(--slate-500);
    margin-top: 0.15rem;
}

.identity-info {
    padding: 0.75rem 1.25rem 1rem;
}

/* 头部区域 */
.record-header {
    padding: 1.5rem 2rem 1rem 2rem;
    background: linear-gradient(to right, #fafbfc, white);
    border-bottom: 1px solid var(--slate-200);
    position: relative;
    overflow: hidden;
}

/* Add a subtle top highlight line */
.record-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-500);
    opacity: 0;
    transition: opacity 0.3s;
}

.identity-card:hover .record-header::before {
    opacity: 1;
}

.title-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.compound-name {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--slate-900);
    margin: 0;
    flex-shrink: 0;
    line-height: 1.3;
}

.type-tag {
    display: inline-block;
    padding: 0.3rem 0.85rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-sm);
}

.type-tag.type-溶剂,
.type-tag.type-solvent {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.type-tag.type-添加剂,
.type-tag.type-additive {
    background: #fce7f3;
    color: #9f1239;
    border: 1px solid #fbcfe8;
}

.type-tag.type-主盐,
.type-tag.type-salt {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.cas-number {
    font-size: 1rem;
    color: var(--slate-600);
    font-weight: 500;
    font-family: var(--font-number);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cas-number::before {
    content: 'CAS:';
    font-size: 0.8em;
    color: var(--slate-400);
    font-weight: 600;
}

/* 内容区域 */
.record-content-wrapper {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
    padding: 2rem;
    background: white;
}

.info-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-section.storage-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-section.storage-grid .info-field {
    display: grid;
    grid-template-columns: 100px minmax(0, 1fr);
    column-gap: 1rem;
    align-items: center;
}

.info-section.storage-grid .field-label {
    min-width: 0;
}

.info-section.storage-grid .field-value {
    min-width: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.info-section.storage-grid .location-edit-container {
    width: 100%;
    flex-wrap: wrap;
    align-items: center;
}

.info-section.storage-grid .location-input {
    flex: 1 1 200px;
    min-width: 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--slate-700);
    margin: 0 0 0.5rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--slate-200);
}

.info-field {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.field-label {
    font-size: 0.875rem;
    color: var(--slate-600);
    font-weight: 500;
    min-width: 80px;
    flex-shrink: 0;
}

.field-value {
    font-size: 0.9375rem;
    color: var(--slate-900);
    font-weight: 500;
    flex: 1;
}

.editable-field {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.file-link-inline {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--primary-600);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.875rem;
}

.file-link-inline:hover {
    color: var(--primary-700);
    text-decoration: underline;
}

/* 其他字段区域 */
.other-fields-section {
    padding: 1.5rem 2rem;
    background: var(--slate-50);
    border-top: 1px solid var(--slate-100);
}

.other-fields-section .data-grid {
    padding: 0;
}

/* 底部更新时间 */
.record-footer {
    padding: 0.75rem 2rem;
    background: var(--slate-50);
    border-top: 1px solid var(--slate-100);
    font-size: 0.8125rem;
    color: var(--slate-500);
    text-align: right;
}

/* Data Grid (Key-Value) */
.data-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
}

.data-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.data-label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--slate-600);
    font-weight: 600;
}

.data-value {
    color: var(--slate-900);
    font-weight: 500;
    word-break: break-word;
}

/* File Links */
.file-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--slate-100);
    color: var(--slate-800);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: var(--transition);
    border: 1px solid var(--slate-200);
}

.file-link:hover {
    background: white;
    box-shadow: var(--shadow-sm);
    border-color: var(--primary-500);
    color: var(--primary-600);
}

/* Image Pairs */
.pairs-wrapper {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding: 2rem;
    background: var(--slate-50);
}

.pair-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.spectrum-structure-row {
    display: flex;
    justify-content: center;
    align-items: start;
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--slate-200);
}

.mnova-file-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.mnova-file-link svg {
    flex-shrink: 0;
    color: var(--primary-600);
}

.mnova-link {
    color: var(--slate-800);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
}

.mnova-link:hover {
    color: var(--primary-600);
    text-decoration: underline;
}

.image-box {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
    max-width: 800px;
    position: relative;
}

.image-box.has-expand-btn {
    padding-bottom: 2.5rem;
}

.image-header {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--slate-600);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--slate-100);
}

.image-header .header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.expand-spectra-btn {
    position: absolute;
    right: 0.75rem;
    bottom: -0.5rem;
    border: 1px solid var(--primary-300);
    background: var(--primary-50);
    color: var(--primary-700);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.4rem 0.75rem;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
}

.expand-spectra-btn:hover {
    background: var(--primary-100);
    border-color: var(--primary-400);
    transform: translateY(-1px);
}

.fid-download-btn {
    border: 1px solid var(--slate-200);
    background: white;
    color: var(--slate-700);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
}

.fid-download-btn:hover {
    border-color: var(--primary-400);
    color: var(--primary-600);
    background: var(--primary-50);
}

.refresh-button,
.expand-button {
    background: transparent;
    border: 1px solid var(--slate-200);
    border-radius: 0.375rem;
    padding: 0.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--slate-600);
    transition: var(--transition);
    width: 24px;
    height: 24px;
}

.refresh-button:hover:not(:disabled),
.expand-button:hover {
    background: var(--primary-50);
    border-color: var(--primary-500);
    color: var(--primary-600);
}

.refresh-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.refresh-button svg.spinning {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.image-box img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--slate-100);
}

.image-box img:hover {
    box-shadow: var(--shadow-md);
    transform: scale(1.01);
}

/* Empty spectrum box styling */
.empty-spectrum {
    width: 100%;
    max-width: 800px;
}

.empty-content {
    padding: 40px;
    text-align: center;
    color: var(--slate-400);
    border: 2px dashed var(--slate-200);
    border-radius: var(--radius-sm);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.location-inline-input {
    width: 150px;
    padding: 2px 6px;
    border: 1px solid var(--warning);
    border-radius: 4px;
    outline: none;
    font-size: 0.9rem;
    margin: 0 4px;
    font-family: var(--font-sans);
    transition: var(--transition-fast);
}

.location-inline-input:focus {
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
}

.upload-loading-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--success);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    z-index: 10002;
    box-shadow: var(--shadow-lg);
    font-size: 0.9rem;
    font-family: var(--font-sans);
}

@media (max-width: 900px) {
    .image-box {
        max-width: 100%;
    }

    .empty-spectrum {
        max-width: 100%;
    }
}

/* Updated Table Styles */
.table-wrapper {
    overflow-x: auto;
    width: 100%;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.data-table th {
    background: var(--slate-50);
    padding: 1rem 1.5rem;
    text-align: left;
    font-weight: 600;
    color: var(--slate-600);
    border-bottom: 2px solid var(--slate-200);
    white-space: nowrap;
}

.data-table td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--slate-100);
    color: var(--slate-800);
    vertical-align: middle;
}

.data-table tr:hover td {
    background-color: var(--primary-50);
}

.calibration-table {
    table-layout: fixed;
    font-size: 0.9rem;
    min-width: 800px;
}

.calibration-table thead {
    position: sticky;
    top: 0;
    z-index: 1;
}

.calibration-table th {
    text-align: center;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.calibration-table th,
.calibration-table td {
    padding: 0.75rem 0.75rem;
    text-align: center;
    white-space: normal;
}

.calibration-table tbody tr:last-child td {
    border-bottom: none;
}

.calibration-table col.col-shift {
    width: 7%;
}

.calibration-table col.col-spectrum {
    width: 9%;
}

.calibration-table col.col-equation {
    width: 24%;
}

.calibration-table col.col-rr {
    width: 6%;
}

.calibration-table col.col-x {
    width: 12%;
}

.calibration-table col.col-y {
    width: 9%;
}

.calibration-table col.col-mass {
    width: 11%;
}

.calibration-table col.col-fraction {
    width: 10%;
}

.calibration-table col.col-actions {
    width: 12%;
}

.calibration-table .equation-cell {
    overflow-wrap: anywhere;
    line-height: 1.35;
    color: var(--slate-700);
    font-family: monospace;
}

.calibration-table .equation-content {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    max-width: 100%;
}

.calibration-table .equation-text {
    overflow-wrap: anywhere;
}

.preferred-star-btn {
    flex: 0 0 auto;
    width: 1.4rem;
    height: 1.4rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--slate-300);
    cursor: pointer;
    transition: var(--transition);
}

.preferred-star-btn:hover:not(:disabled) {
    color: #f59e0b;
    transform: scale(1.08);
}

.preferred-star-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.preferred-star-btn svg {
    width: 1rem;
    height: 1rem;
    fill: transparent;
    stroke: currentColor;
    stroke-width: 1.7;
}

.preferred-star-btn.is-active {
    color: #f59e0b;
}

.preferred-star-btn.is-active svg {
    fill: currentColor;
}

.calibration-table .action-cell {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.calibration-table .calc-input {
    width: 90px;
}

.calibration-table .sample-mass-input {
    width: 100px;
}

.calc-input {
    width: 100px;
    padding: 0.5rem;
    border: 1px solid var(--slate-300);
    border-radius: 6px;
    text-align: center;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.calc-input:focus {
    border-color: var(--primary-500);
    outline: none;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.sample-mass-input {
    width: 120px;
}

.mass-fraction {
    font-weight: 600;
    color: var(--slate-700);
}

.calc-result {
    font-weight: 700;
    color: var(--primary-700);
    font-family: monospace;
    font-size: 1.1em;
}

.calc-result.highlight {
    color: var(--success);
    animation: pop 0.3s ease;
}

@keyframes pop {
    50% {
        transform: scale(1.2);
    }
}

/* Loading */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    color: var(--slate-600);
    gap: 1rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--primary-100);
    border-top-color: var(--primary-600);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.hidden {
    display: none !important;
}

/* Error */
.error-message {
    background: #fef2f2;
    border: 1px solid #fee2e2;
    color: #991b1b;
    padding: 1rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.attachment-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--slate-200);
    background: white;
    color: var(--slate-700);
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.attachment-btn:hover {
    border-color: var(--primary-400);
    color: var(--primary-600);
    background: var(--primary-50);
}

.attachment-upload-btn {
    border: 1px solid var(--slate-200);
    border-radius: 999px;
    padding: 0.35rem;
    background: white;
    color: var(--slate-500);
}

.attachment-upload-btn:hover {
    color: var(--primary-600);
    border-color: var(--primary-300);
    background: var(--primary-50);
}

.reload-record-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--slate-200);
    background: white;
    color: var(--slate-700);
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.reload-record-btn:hover:not(:disabled) {
    border-color: #f59e0b;
    color: #b45309;
    background: #fffbeb;
}

.reload-record-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.reload-record-btn.reloading svg {
    animation: spin 1s linear infinite;
}

.location-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0 2rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--slate-700);
    width: 100%;
    text-align: center;
}

.location-label {
    color: var(--slate-600);
    font-weight: 600;
}

.location-value {
    font-size: 1.05rem;
    font-weight: 600;
}

.location-row+.pairs-wrapper {
    margin-top: 0.75rem;
}

/* Add Row Button Inline */
.add-row-btn-inline {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    background: var(--primary-600);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.add-row-btn-inline:hover {
    background: var(--primary-700);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
}

.add-row-btn-inline svg {
    flex-shrink: 0;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease-out;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--slate-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--slate-900);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    padding: 0.25rem;
    cursor: pointer;
    color: var(--slate-400);
    transition: var(--transition);
    border-radius: 4px;
}

.modal-close:hover {
    color: var(--slate-600);
    background: var(--slate-100);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--slate-700);
    margin-bottom: 0.5rem;
}

.required {
    color: var(--error);
}

.form-input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--slate-300);
    border-radius: 6px;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    transition: var(--transition);
}

.form-input:focus {
    border-color: var(--primary-500);
    outline: none;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-input:disabled {
    background: var(--slate-100);
    color: var(--slate-500);
    cursor: not-allowed;
}

/* Equation Inputs */
.equation-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 0.5rem;
}

.equation-param {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.param-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--slate-600);
}

.equation-preview {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background: var(--slate-50);
    border: 1px solid var(--slate-200);
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.preview-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--slate-600);
}

.preview-value {
    font-family: monospace;
    font-size: 0.9375rem;
    color: var(--slate-500);
    font-weight: 500;
}

.preview-value.preview-active {
    color: var(--primary-700);
    font-weight: 600;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--slate-200);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Confirm Modal */
.confirm-modal {
    max-width: 420px;
}

.confirm-message {
    font-size: 0.95rem;
    color: var(--slate-700);
    line-height: 1.6;
    margin: 0;
}

.confirm-detail {
    margin: 0.75rem 0 0;
    padding: 0.75rem 1rem;
    background: var(--slate-50);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--slate-600);
    white-space: pre-wrap;
    line-height: 1.6;
}

.confirm-danger-btn {
    background: var(--error);
}

.confirm-danger-btn:hover:not(:disabled) {
    background: #dc2626;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

/* Delete Row Button */
.delete-row-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    padding: 0.375rem;
    cursor: pointer;
    color: var(--slate-400);
    transition: var(--transition);
    border-radius: 4px;
}

.delete-row-btn:hover {
    background: #fee2e2;
    color: var(--error);
    transform: scale(1.1);
}

.delete-row-btn svg {
    display: block;
}

.record-row-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 0.6rem;
    margin-left: 0.4rem;
    border: 1px solid var(--slate-200);
    border-radius: 6px;
    background: white;
    color: var(--slate-700);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.record-row-btn:hover {
    border-color: var(--primary-500);
    color: var(--primary-600);
    background: var(--primary-50);
}

/* Edit Location Icon */
.edit-location-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    padding: 4px;
    margin-left: 8px;
    cursor: pointer;
    color: var(--primary-600);
    transition: var(--transition);
    border-radius: 4px;
    opacity: 0.7;
}

.edit-location-icon:hover {
    opacity: 1;
    background: var(--primary-50);
    transform: scale(1.1);
}

.edit-location-icon svg {
    display: block;
}

/* Upload File Icon (for file_all) */
.upload-file-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    padding: 4px;
    margin-left: 8px;
    cursor: pointer;
    color: #10b981;
    transition: var(--transition);
    border-radius: 4px;
    opacity: 0.7;
}

.upload-file-icon:hover {
    opacity: 1;
    background: #ecfdf5;
    transform: scale(1.1);
}

.upload-file-icon svg {
    display: block;
}

/* Location Edit Container */
.location-edit-container {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.location-input {
    padding: 0.5rem;
    border: 1px solid var(--slate-300);
    border-radius: 6px;
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition);
    min-width: 200px;
}

.location-input:focus {
    border-color: var(--primary-500);
    outline: none;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.save-btn,
.cancel-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.save-btn {
    background: var(--success);
    color: white;
}

.save-btn:hover:not(:disabled) {
    background: #059669;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.save-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.cancel-btn {
    background: var(--slate-200);
    color: var(--slate-700);
}

.cancel-btn:hover:not(:disabled) {
    background: var(--slate-300);
}

.cancel-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Mobile */
@media (max-width: 768px) {
    .app-container {
        padding: 1rem;
    }

    .main-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .nav-search {
        width: 100%;
    }

    .nav-search .search-box {
        width: 100%;
    }

    .data-grid {
        grid-template-columns: 1fr;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .location-edit-container {
        flex-direction: column;
        align-items: flex-start;
    }

    .location-input {
        width: 100%;
    }

    /* 新布局响应式 */
    .record-content-wrapper {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.5rem;
    }

    .record-layout {
        grid-template-columns: 1fr;
        padding: 1.5rem;
    }

    .calibration-panel {
        margin: 0 1rem 1rem;
    }

    .record-left {
        position: static;
        max-height: none;
        overflow: visible;
        padding-right: 0;
    }

    .identity-card .record-header {
        padding: 1rem 1.25rem 0.75rem;
    }

    .structure-card,
    .identity-info {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }

    .record-header {
        padding: 1rem;
    }

    .compound-name {
        font-size: 1.25rem;
    }

    .title-row {
        flex-wrap: wrap;
    }

    .field-label {
        min-width: 70px;
    }
}

/* ==========================================
   ACCESS_KEY 配置界面样式
   ========================================== */

.config-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease-out;
}

.config-overlay.hidden {
    display: none;
}

.config-modal {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl), 0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    width: 90%;
    max-width: 420px;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.config-header {
    padding: 2rem 2rem 1.5rem;
    text-align: center;
    border-bottom: 1px solid var(--slate-100);
    position: relative;
}

.config-close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 2rem;
    height: 2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.12);
    color: var(--slate-500);
    cursor: pointer;
    transition: var(--transition);
}

.config-close-btn:hover {
    background: rgba(148, 163, 184, 0.22);
    color: var(--slate-700);
}

.config-close-btn.hidden {
    display: none;
}

.config-icon {
    margin-bottom: 1rem;
}

.config-header h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--slate-900);
    margin: 0;
}

.config-subtitle {
    color: var(--slate-600);
    font-size: 0.9375rem;
    margin-top: 0.5rem;
}

.config-body {
    padding: 1.5rem 2rem;
}

.config-input-group {
    position: relative;
    margin-bottom: 1rem;
}

.config-input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--slate-700);
    margin-bottom: 0.5rem;
}

.config-input-group input {
    width: 100%;
    padding: 0.875rem 3rem 0.875rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--slate-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
    font-family: var(--font-sans);
}

.config-input-group input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.toggle-visibility-btn {
    position: absolute;
    right: 0.75rem;
    bottom: 0.75rem;
    background: none;
    border: none;
    color: var(--slate-400);
    cursor: pointer;
    padding: 0.25rem;
    transition: var(--transition);
}

.toggle-visibility-btn:hover {
    color: var(--slate-600);
}

.config-error {
    background: #fef2f2;
    color: #dc2626;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    border: 1px solid #fecaca;
}

.config-error.hidden {
    display: none;
}

.config-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--slate-500);
    font-size: 0.8125rem;
}

.config-info svg {
    flex-shrink: 0;
}

.config-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--slate-100);
    background: var(--slate-50);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.config-save-btn {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: var(--primary-600);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.config-save-btn:hover:not(:disabled) {
    background: var(--primary-700);
}

.config-save-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.config-save-btn .btn-loading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.config-save-btn .btn-loading.hidden,
.config-save-btn .btn-text.hidden {
    display: none;
}

/* 设置按钮 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pin-btn {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-full);
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--slate-400);
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.pin-btn:hover {
    background: white;
    color: var(--primary-500);
    border-color: var(--primary-200);
    box-shadow: var(--shadow-md);
}

.pin-btn.pinned {
    color: var(--primary-600);
    background: var(--primary-50, rgba(14, 165, 233, 0.08));
    border-color: var(--primary-200);
    transform: rotate(45deg);
}

.pin-btn.pinned:hover {
    background: var(--primary-100, rgba(14, 165, 233, 0.15));
    color: var(--primary-700);
}

/* 固定时禁用隐藏动画 */
.main-header.header-pinned.header-hidden {
    transform: none;
    opacity: 1;
    pointer-events: auto;
}

.settings-btn {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-full);
    width: 42px;
    height: 42px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--slate-600);
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.settings-btn:hover {
    background: white;
    color: var(--primary-600);
    border-color: var(--primary-200);
    transform: rotate(90deg);
    box-shadow: var(--shadow-md);
}

/* ==========================================
   移动端响应式适配
   ========================================== */

/* 平板设备 (768px - 1024px) */
@media screen and (max-width: 1024px) {
    .app-container {
        padding: 1rem;
        gap: 1.5rem;
    }

    .main-header {
        gap: 1rem;
        padding: 0.75rem 1.25rem;
        top: 1rem;
    }

    .logo-icon {
        width: 44px;
        height: 44px;
    }

    .logo-text h1 {
        font-size: 1.5rem;
    }

    .nav-search .search-box {
        width: min(450px, 100%);
    }

    .record-layout {
        grid-template-columns: 280px minmax(0, 1fr);
        gap: 2rem;
        padding: 1.5rem;
    }

    .cas-display h2 {
        font-size: 2.5rem;
    }
}

/* 小平板/大手机 (576px - 768px) */
@media screen and (max-width: 768px) {
    .app-container {
        padding: 0.75rem;
        gap: 1rem;
    }

    /* 顶部导航栏 - 垂直布局 */
    .main-header {
        flex-direction: column;
        gap: 0.75rem;
        padding: 1rem;
        top: 0.5rem;
        border-radius: var(--radius-xl);
    }

    .main-header.header-hidden {
        transform: translateY(calc(-100% - 1rem));
    }

    .logo-area {
        width: 100%;
        justify-content: center;
    }

    .logo-icon {
        width: 40px;
        height: 40px;
    }

    .logo-icon svg {
        width: 36px;
        height: 36px;
    }

    .logo-text h1 {
        font-size: 1.35rem;
    }

    /* 搜索框 - 全宽 */
    .nav-search {
        width: 100%;
    }

    .nav-search .search-box {
        width: 100%;
        padding: 0.35rem;
    }

    .search-box input {
        font-size: 1rem;
        padding: 0.5rem 0;
    }

    .search-icon {
        padding: 0 0.75rem;
    }

    .primary-btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.9rem;
    }

    /* 设置按钮 */
    .nav-actions {
        position: absolute;
        top: 0.75rem;
        right: 0.75rem;
    }

    .pin-btn,
    .theme-btn {
        width: 30px;
        height: 30px;
    }

    .pin-btn svg,
    .theme-btn svg {
        width: 14px;
        height: 14px;
    }

    .settings-btn {
        width: 36px;
        height: 36px;
    }

    /* 记录布局 - 单列 */
    .record-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.25rem;
    }

    .record-left {
        position: static;
        max-height: none;
        padding-right: 0;
    }

    /* 卡片样式 */
    .result-card,
    .cas-display {
        border-radius: var(--radius-lg);
    }

    .card-header {
        padding: 1rem 1.25rem;
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .card-title {
        font-size: 1.15rem;
        gap: 0.75rem;
    }

    .card-title::before {
        width: 4px;
        height: 22px;
    }

    .cas-display {
        padding: 2.5rem 1.5rem;
    }

    .cas-display h2 {
        font-size: 2rem;
    }

    /* 身份卡 */
    .identity-card .record-header {
        padding: 1rem 1.25rem;
    }

    .identity-card .compound-name {
        font-size: 1.2rem;
    }

    .compound-name {
        font-size: 1.35rem;
    }

    /* 数据网格 */
    .data-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 0.75rem;
    }

    .data-item {
        padding: 0.875rem;
    }

    /* 结构卡片 */
    .structure-frame {
        min-height: 160px;
        padding: 0.75rem;
    }

    .structure-3d-viewer {
        height: 150px;
    }

    /* 校准面板 */
    .calibration-panel {
        margin: 0 1rem 1rem;
    }

    /* 表格移动端样式 */
    .table-wrapper {
        margin: 0 -0.5rem;
        padding: 0 0.5rem;
    }

    .data-table {
        font-size: 0.85rem;
        min-width: 750px;
    }

    .data-table th,
    .data-table td {
        padding: 0.75rem 0.625rem;
    }

    /* 配置弹窗 */
    .config-modal {
        width: 95%;
        max-width: 400px;
        margin: 1rem;
    }

    .config-header {
        padding: 1.5rem 1.25rem 1rem;
    }

    .config-body {
        padding: 1rem 1.25rem;
    }

    .config-footer {
        padding: 1rem 1.25rem;
    }
}

/* 手机设备 (< 576px) */
@media screen and (max-width: 576px) {
    :root {
        --radius-xl: 1rem;
        --radius-2xl: 1.25rem;
    }

    body {
        padding-bottom: 1rem;
    }

    .app-container {
        padding: 0.5rem;
        gap: 0.75rem;
    }

    /* 顶部导航栏 */
    .main-header {
        padding: 0.875rem;
        gap: 0.625rem;
        top: 0.25rem;
        margin: 0 0.25rem;
        border-radius: var(--radius-lg);
    }

    .logo-area {
        gap: 0.625rem;
    }

    .logo-icon {
        width: 36px;
        height: 36px;
    }

    .logo-icon svg {
        width: 32px;
        height: 32px;
    }

    .logo-text h1 {
        font-size: 1.15rem;
    }

    /* 搜索框 */
    .nav-search .search-box {
        padding: 0.25rem;
    }

    .search-box input {
        font-size: 0.9rem;
        padding: 0.4rem 0;
    }

    .search-icon {
        padding: 0 0.5rem 0 0.75rem;
    }

    .search-icon svg {
        width: 18px;
        height: 18px;
    }

    .primary-btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }

    /* 设置按钮 */
    .nav-actions {
        top: 0.5rem;
        right: 0.5rem;
    }

    .pin-btn,
    .theme-btn {
        width: 26px;
        height: 26px;
    }

    .pin-btn svg,
    .theme-btn svg {
        width: 12px;
        height: 12px;
    }

    .settings-btn {
        width: 32px;
        height: 32px;
    }

    .settings-btn svg {
        width: 16px;
        height: 16px;
    }

    /* 记录布局 */
    .record-layout {
        padding: 1rem;
        gap: 1rem;
    }

    /* 卡片样式 */
    .card-header {
        padding: 0.875rem 1rem;
    }

    .card-title {
        font-size: 1rem;
        gap: 0.5rem;
    }

    .card-cas {
        font-size: 0.75rem;
        padding: 0.3rem 0.75rem;
    }

    .badge {
        font-size: 0.8rem;
        padding: 0.3rem 0.9rem;
    }

    .cas-display {
        padding: 2rem 1rem;
    }

    .cas-display h2 {
        font-size: 1.6rem;
    }

    /* 身份卡 */
    .identity-card .record-header {
        padding: 0.875rem 1rem;
    }

    .identity-card .compound-name {
        font-size: 1.1rem;
    }

    .compound-name {
        font-size: 1.2rem;
    }

    .cas-number {
        font-size: 0.85rem;
    }

    .type-tag {
        font-size: 0.7rem;
        padding: 0.25rem 0.6rem;
    }

    /* 信息字段 */
    .info-field {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .field-label {
        font-size: 0.75rem;
    }

    .field-value {
        font-size: 0.9rem;
    }

    /* 数据网格 */
    .data-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 0.5rem;
    }

    .data-item {
        padding: 0.75rem;
    }

    .data-label {
        font-size: 0.7rem;
    }

    .data-value {
        font-size: 0.875rem;
    }

    /* 结构卡片 */
    .structure-card {
        padding: 0.625rem 1rem 0.875rem;
    }

    .structure-frame {
        min-height: 140px;
        padding: 0.625rem;
    }

    .structure-3d-viewer {
        height: 130px;
    }

    .structure-2d-frame {
        min-height: 120px;
    }

    .structure-2d-image {
        max-height: 130px;
    }

    /* 存储网格 */
    .info-section.storage-grid .info-field {
        grid-template-columns: 80px minmax(0, 1fr);
    }

    /* 位置行 */
    .location-row {
        flex-wrap: wrap;
    }

    /* 谱图容器 */
    .pairs-wrapper {
        gap: 0.75rem;
    }

    .pair-container {
        padding: 0.75rem;
    }

    /* 校准面板 */
    .calibration-panel {
        margin: 0 0.75rem 0.75rem;
    }

    .calibration-panel .card-header {
        padding: 0.75rem 1rem;
    }

    /* 表格滚动 */
    .table-wrapper {
        margin: 0 -0.25rem;
        padding: 0 0.25rem;
    }

    .data-table {
        min-width: 700px;
        font-size: 0.8rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.5rem 0.5rem;
    }

    .data-table th {
        font-size: 0.7rem;
    }

    .data-table input[type="text"],
    .data-table input[type="number"] {
        padding: 0.375rem 0.5rem;
        font-size: 0.8rem;
    }

    /* 配置弹窗 */
    .config-overlay {
        padding: 0.5rem;
    }

    .config-modal {
        width: 100%;
        max-width: none;
        margin: 0;
        border-radius: var(--radius-lg);
    }

    .config-header {
        padding: 1.25rem 1rem 0.875rem;
    }

    .config-icon svg {
        width: 40px;
        height: 40px;
    }

    .config-header h2 {
        font-size: 1.25rem;
    }

    .config-subtitle {
        font-size: 0.85rem;
    }

    .config-body {
        padding: 0.875rem 1rem;
    }

    .config-input-group input {
        padding: 0.75rem 2.75rem 0.75rem 0.875rem;
        font-size: 0.9rem;
    }

    .config-footer {
        padding: 0.875rem 1rem;
    }

    .config-save-btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }

    /* 附件按钮 */
    .attachment-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.75rem;
    }

    .attachment-upload-btn {
        width: 28px;
        height: 28px;
    }

    /* 加载状态 */
    .loading-state p {
        font-size: 0.9rem;
    }

    /* 错误信息 */
    .error-message {
        padding: 1rem;
        font-size: 0.9rem;
    }
}

/* 超小屏幕 (< 400px) */
@media screen and (max-width: 400px) {
    .logo-text h1 {
        font-size: 1rem;
    }

    .primary-btn {
        padding: 0.5rem 0.875rem;
        font-size: 0.8rem;
    }

    .cas-display h2 {
        font-size: 1.4rem;
    }

    .data-grid {
        grid-template-columns: 1fr 1fr;
    }

    .info-section.storage-grid .info-field {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
}

/* 横屏手机优化 */
@media screen and (max-height: 500px) and (orientation: landscape) {
    .main-header {
        flex-direction: row;
        padding: 0.5rem 1rem;
        top: 0.25rem;
    }

    .main-header.header-hidden {
        transform: translateY(calc(-100% - 0.5rem));
    }

    .logo-area {
        width: auto;
    }

    .nav-search {
        flex: 1;
    }

    .nav-actions {
        position: static;
    }

    .config-modal {
        max-height: 90vh;
        overflow-y: auto;
    }
}

/* ==========================================
   自动补全下拉菜单
   ========================================== */
.autocomplete-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(59, 130, 246, 0.1);
    max-height: 400px;
    overflow-y: auto;
    z-index: 1000;
    animation: dropdownSlideIn 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.autocomplete-dropdown.hidden {
    display: none;
}

@keyframes dropdownSlideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.autocomplete-item {
    padding: 0.875rem 1.25rem;
    cursor: pointer;
    transition: var(--transition-fast);
    border-bottom: 1px solid var(--slate-100);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.selected {
    background: linear-gradient(135deg, var(--primary-50), rgba(59, 130, 246, 0.08));
}

.autocomplete-item.selected {
    background: linear-gradient(135deg, var(--primary-100), rgba(59, 130, 246, 0.15));
}

.autocomplete-cas {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--slate-800);
    letter-spacing: -0.01em;
}

.autocomplete-name {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--slate-500);
}

.autocomplete-name .name-zh {
    color: var(--slate-600);
}

.autocomplete-name .name-en {
    color: var(--slate-400);
    font-style: italic;
}

/* 高亮匹配文本 */
.autocomplete-dropdown mark {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(20, 184, 166, 0.2));
    color: var(--primary-700);
    padding: 0 0.15rem;
    border-radius: 3px;
    font-weight: 600;
}

/* 滚动条样式 */
.autocomplete-dropdown::-webkit-scrollbar {
    width: 6px;
}

.autocomplete-dropdown::-webkit-scrollbar-track {
    background: transparent;
}

.autocomplete-dropdown::-webkit-scrollbar-thumb {
    background: var(--slate-300);
    border-radius: 3px;
}

.autocomplete-dropdown::-webkit-scrollbar-thumb:hover {
    background: var(--slate-400);
}

/* 移动端优化 */
@media (max-width: 640px) {
    .autocomplete-dropdown {
        max-height: 300px;
        border-radius: var(--radius-md);
    }

    .autocomplete-item {
        padding: 0.75rem 1rem;
    }

    .autocomplete-cas {
        font-size: 0.95rem;
    }

    .autocomplete-name {
        font-size: 0.8rem;
    }
}

/* Location Badge */
.location-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1.25rem;
    background: #fffbeb;
    /* Amber/Yellowish background to match image */
    color: #92400e;
    /* Darker amber for text */
    border: 1px solid #fcd34d;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: default;
}

.location-badge:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
    background: #fef3c7;
}

.location-badge svg {
    color: #d97706;
}

.location-edit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    cursor: pointer;
    color: #b45309;
    opacity: 0.5;
    padding: 2px;
    border-radius: 4px;
    transition: var(--transition-fast);
    line-height: 0;
    margin-left: 2px;
}

.location-edit-btn:hover {
    opacity: 1;
    background: rgba(251, 191, 36, 0.2);
    transform: scale(1.1);
}

/* ==========================================
   Toast 通知系统
   ========================================== */
.toast-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
    pointer-events: none;
    max-width: 400px;
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--slate-200);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(0, 0, 0, 0.06);
    pointer-events: auto;
    animation: toastSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    transition: opacity 0.3s, transform 0.3s;
    max-width: 100%;
    word-break: break-word;
}

.toast.toast-hiding {
    opacity: 0;
    transform: translateX(100%);
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 1px;
}

.toast-message {
    flex: 1;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--slate-800);
    line-height: 1.5;
}

.toast-close {
    flex-shrink: 0;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--slate-400);
    padding: 2px;
    border-radius: 4px;
    transition: var(--transition-fast);
    line-height: 0;
}

.toast-close:hover {
    color: var(--slate-600);
    background: var(--slate-100);
}

/* Toast 类型 */
.toast-success {
    border-left: 3px solid var(--success);
}

.toast-success .toast-icon {
    color: var(--success);
}

.toast-error {
    border-left: 3px solid var(--error);
}

.toast-error .toast-icon {
    color: var(--error);
}

.toast-warning {
    border-left: 3px solid var(--warning);
}

.toast-warning .toast-icon {
    color: var(--warning);
}

.toast-info {
    border-left: 3px solid var(--primary-500);
}

.toast-info .toast-icon {
    color: var(--primary-500);
}

/* Upload toast 进度条 */
.toast-progress-bar {
    width: 100%;
    height: 4px;
    background: var(--slate-200);
    border-radius: 2px;
    margin-top: 0.5rem;
    overflow: hidden;
}

.toast-progress-fill {
    height: 100%;
    background: var(--primary-500);
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* 移动端 toast */
@media (max-width: 576px) {
    .toast-container {
        top: 0.75rem;
        right: 0.75rem;
        left: 0.75rem;
        max-width: none;
    }

    .toast {
        padding: 0.75rem 1rem;
        font-size: 0.85rem;
    }
}

/* ==========================================
   新增分子 Modal
   ========================================== */
.molecule-modal {
    max-width: 640px;
    width: 95vw;
}

.mol-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 1.25rem;
}

.mol-cas-group {
    grid-column: 1 / -1;
}

.cas-input-row {
    display: flex;
    gap: 0.5rem;
}

.cas-input-row .form-input {
    flex: 1;
}

.cas-check-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--slate-300);
    border-radius: var(--radius-sm);
    background: var(--slate-50);
    color: var(--slate-600);
    cursor: pointer;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.cas-check-btn:hover:not(:disabled) {
    border-color: var(--primary-500);
    color: var(--primary-500);
    background: var(--primary-50);
}

.cas-check-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.cas-status {
    display: block;
    font-size: 0.8rem;
    margin-top: 0.25rem;
    min-height: 1.2em;
    transition: color 0.2s;
}

.cas-status.checking {
    color: var(--slate-500);
}

.cas-status.exists {
    color: var(--error);
    font-weight: 600;
}

.cas-status.available {
    color: var(--success);
    font-weight: 600;
}

.cas-status.error {
    color: var(--warning);
}

.type-combo-row {
    display: flex;
}

.type-combo-row .form-input {
    flex: 1;
}

.structure-drop-zone {
    position: relative;
    border: 2px dashed var(--slate-300);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--slate-50);
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.structure-drop-zone:hover {
    border-color: var(--primary-400);
    background: var(--primary-50);
}

.structure-drop-zone.drag-over {
    border-color: var(--primary-500);
    background: rgba(59, 130, 246, 0.08);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--slate-500);
}

.drop-zone-content svg {
    color: var(--slate-400);
}

.drop-zone-hint {
    font-size: 0.75rem;
    color: var(--slate-400);
}

.structure-preview {
    max-width: 100%;
    max-height: 200px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.structure-remove-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: var(--radius-full);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.structure-remove-btn:hover {
    background: var(--error);
}

/* ==========================================
   批量 FID 上传 Modal
   ========================================== */
.batch-upload-modal {
    max-width: 680px;
    width: 95vw;
}

.batch-drop-zone {
    border: 2px dashed var(--slate-300);
    border-radius: var(--radius-md);
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--slate-50);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.batch-drop-zone:hover {
    border-color: var(--primary-400);
    background: var(--primary-50);
}

.batch-drop-zone svg {
    color: var(--slate-400);
}

.batch-drop-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--slate-700);
}

.batch-drop-hint {
    font-size: 0.8rem;
    color: var(--slate-400);
    font-family: var(--font-number);
}

.batch-select-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 0.5rem;
}

.batch-select-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Scan result */
.scan-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.scan-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--slate-800);
    font-family: var(--font-heading);
}

.scan-reset-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: var(--slate-100);
    border: 1px solid var(--slate-300);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--slate-600);
    cursor: pointer;
    transition: var(--transition-fast);
}

.scan-reset-btn:hover {
    background: var(--slate-200);
}

.scan-summary {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    background: var(--primary-50);
    border-radius: var(--radius-sm);
    border: 1px solid var(--primary-200);
}

.scan-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-600);
    font-family: var(--font-number);
    line-height: 1;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--slate-500);
    margin-top: 0.25rem;
}

.scan-details {
    max-height: 240px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.scan-cas-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    background: var(--slate-50);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-sm);
}

.scan-cas-number {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--slate-800);
    font-family: var(--font-number);
    min-width: 100px;
}

.scan-types {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.scan-type-badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    background: var(--accent-50);
    color: var(--accent-500);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-number);
}

/* Progress */
.batch-progress {
    padding: 1rem 0;
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: var(--slate-200);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.progress-bar.progress-error {
    background: var(--error);
}

.progress-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--slate-700);
    margin-bottom: 0.75rem;
}

.progress-log {
    max-height: 200px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.log-cas-item {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    background: var(--slate-50);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.log-cas-item strong {
    min-width: 100px;
    font-family: var(--font-number);
}

.log-success {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.log-error {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

/* Nav action buttons for molecule */
.nav-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.4rem 0.75rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    color: var(--slate-600);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.nav-action-btn:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
    color: var(--primary-600);
}

.nav-action-btn svg {
    flex-shrink: 0;
}

/* Dark mode overrides for new components */
[data-theme="dark"] .cas-check-btn {
    background: var(--slate-100);
    border-color: var(--slate-200);
    color: var(--slate-500);
}

[data-theme="dark"] .cas-check-btn:hover:not(:disabled) {
    background: var(--slate-200);
    border-color: var(--primary-400);
    color: var(--primary-400);
}

[data-theme="dark"] .structure-drop-zone {
    background: var(--slate-100);
    border-color: var(--slate-300);
}

[data-theme="dark"] .structure-drop-zone:hover {
    border-color: var(--primary-400);
    background: var(--slate-200);
}

[data-theme="dark"] .batch-drop-zone {
    background: var(--slate-100);
    border-color: var(--slate-300);
}

[data-theme="dark"] .batch-drop-zone:hover {
    background: var(--slate-200);
    border-color: var(--primary-400);
}

[data-theme="dark"] .batch-drop-title {
    color: var(--slate-700);
}

[data-theme="dark"] .scan-summary {
    background: var(--slate-100);
    border-color: var(--slate-200);
}

[data-theme="dark"] .scan-cas-item {
    background: var(--slate-100);
    border-color: var(--slate-200);
}

[data-theme="dark"] .scan-cas-number {
    color: var(--slate-700);
}

[data-theme="dark"] .log-cas-item {
    background: var(--slate-100);
}

[data-theme="dark"] .nav-action-btn {
    background: rgba(30, 41, 59, 0.5);
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--slate-500);
}

[data-theme="dark"] .nav-action-btn:hover {
    background: var(--slate-100);
    border-color: var(--primary-400);
    color: var(--primary-400);
}

[data-theme="dark"] .scan-title {
    color: var(--slate-700);
}

[data-theme="dark"] .scan-reset-btn {
    background: var(--slate-200);
    border-color: var(--slate-300);
    color: var(--slate-600);
}

[data-theme="dark"] .progress-text {
    color: var(--slate-600);
}

@media (max-width: 576px) {
    .mol-form-grid {
        grid-template-columns: 1fr;
    }

    .scan-summary {
        flex-wrap: wrap;
    }

    .molecule-modal,
    .batch-upload-modal {
        max-width: 100vw;
        width: 100vw;
        margin: 0;
        border-radius: 0;
        max-height: 100vh;
    }
}