/* ═══════════════════════════════════════════════════════════════
   StereoChem — Stereoisomer Cheminformatics Tool
   Main Stylesheet
   ═══════════════════════════════════════════════════════════════ */

:root {
    --bg-primary: #060d17;
    --bg-secondary: #0a1628;
    --bg-card: #0d1b2a;
    --bg-card-hover: #112240;
    --bg-input: #0a1525;
    --border: #1a3050;
    --border-light: #243b5e;
    --text-primary: #e0e8ff;
    --text-secondary: #8899bb;
    --text-muted: #556688;
    --accent: #4a90d9;
    --accent-glow: #4a90d988;
    --accent2: #00d4aa;
    --accent2-glow: #00d4aa88;
    --accent3: #ff6b9d;
    --accent4: #ffd700;
    --success: #00d4aa;
    --warning: #ffd700;
    --danger: #ff6b9d;
    --info: #4a90d9;
    --sidebar-width: 260px;
    --sidebar-collapsed: 64px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 16px;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* ─── Particles Background ─── */
#particles-canvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ─── App Container ─── */
.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ─── Sidebar ─── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    z-index: 100;
    transition: width var(--transition);
    overflow: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-header {
    padding: 20px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    white-space: nowrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon svg {
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.05rem;
    font-weight: 700;
    white-space: nowrap;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    font-size: 0.65rem;
    font-weight: 400;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.sidebar.collapsed .logo-text { display: none; }

.sidebar-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 28px; height: 28px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    font-size: 0.7rem;
}

.sidebar-toggle:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.sidebar.collapsed .sidebar-toggle i { transform: rotate(180deg); }

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition);
    cursor: pointer;
    white-space: nowrap;
    position: relative;
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

.nav-item:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(74,144,217,0.15), rgba(0,212,170,0.1));
    color: var(--accent);
    border-left: 3px solid var(--accent);
    padding-left: 13px;
}

.nav-item.active::before {
    content: '';
    position: absolute;
    right: 8px;
    width: 6px; height: 6px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--accent-glow);
}

.sidebar.collapsed .nav-label { display: none; }
.sidebar.collapsed .nav-item { padding: 12px; justify-content: center; }
.sidebar.collapsed .nav-item.active { border-left: none; padding-left: 12px; }
.sidebar.collapsed .nav-item.active::before { display: none; }

/* Sidebar Footer */
.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 6px var(--accent2-glow);
    animation: pulse 2s infinite;
}

.status-dot.error { background: var(--danger); box-shadow: 0 0 6px #ff6b9d88; }
.status-dot.loading { background: var(--warning); box-shadow: 0 0 6px #ffd70088; }

.status-text {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.sidebar-collapsed .status-indicator { display: none; }
.sidebar-version {
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-top: 4px;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ─── Main Content ─── */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 32px;
    transition: margin-left var(--transition);
    min-height: 100vh;
    max-width: calc(100vw - var(--sidebar-width));
}

.sidebar.collapsed + .main-content {
    margin-left: var(--sidebar-collapsed);
    max-width: calc(100vw - var(--sidebar-collapsed));
}

/* ─── Tab Content ─── */
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ─── Page Header ─── */
.page-header {
    margin-bottom: 28px;
}

.page-title {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #e0e8ff, #8899bb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.title-icon {
    -webkit-text-fill-color: var(--accent);
    font-size: 1.6rem;
}

.page-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 700px;
}

/* ─── Cards ─── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    margin-bottom: 20px;
}

.card:hover {
    border-color: var(--border-light);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.card-header {
    background: var(--bg-secondary);
    padding: 14px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-header i { font-size: 1rem; }

.card-body { padding: 20px; }

.results-card {
    border: 1px solid var(--border);
}

.input-card {
    border: 1px solid var(--accent);
    box-shadow: 0 0 20px rgba(74,144,217,0.05);
}

/* ─── Inputs ─── */
.input-group {
    margin-bottom: 18px;
}

.input-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}

input[type="text"], select, textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: all var(--transition);
    outline: none;
}

input[type="text"]:focus, select:focus, textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(74,144,217,0.15);
}

input[type="text"]::placeholder {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.smiles-input-wrapper {
    display: flex;
    gap: 8px;
}

.smiles-input-wrapper input { flex: 1; }

/* ─── Buttons ─── */
.btn {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    font-family: var(--font-sans);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #3570b0);
    color: #fff;
    box-shadow: 0 2px 12px rgba(74,144,217,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(74,144,217,0.4);
}

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background: var(--bg-card);
    border-color: var(--accent);
    color: var(--accent);
}

.btn-lg { padding: 14px 28px; font-size: 1rem; border-radius: var(--radius); }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-group {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.btn-group .btn {
    border-radius: var(--radius-sm);
    flex: 1;
    min-width: 80px;
    text-align: center;
    justify-content: center;
}

.btn-group .btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* ─── Example Buttons ─── */
.example-smiles {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
    align-items: center;
}

.example-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.example-btn {
    padding: 5px 12px;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.example-btn:hover {
    background: var(--bg-card);
    border-color: var(--accent);
    color: var(--accent);
}

/* ─── Preview Box ─── */
.preview-box {
    margin-bottom: 18px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}

.preview-header {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 8px;
}

.preview-info {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.preview-info span {
    background: var(--bg-card);
    padding: 4px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
}

.preview-img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    background: #fff;
}

/* ─── Loading Spinner ─── */
.loading-spinner {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.spinner {
    width: 24px; height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 60px;
    color: var(--text-muted);
}

/* ─── Isomer Relationship Chart ─── */
.relationship-chart-wrapper {
    position: relative;
    width: 100%;
    height: 280px;
    max-height: 280px;
    overflow: hidden;
}

.relationship-chart-wrapper canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

/* ─── Isomer Grid ─── */
.isomer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.isomer-grid-card {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
}

.isomer-grid-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.isomer-grid-card img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    background: #fff;
}

.isomer-grid-card .isomer-label {
    margin-top: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    font-family: var(--font-mono);
}

.isomer-grid-card .isomer-relationship {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ─── NFT Gallery ─── */
.gallery-controls {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    align-items: center;
}

.filter-bar { display: flex; gap: 6px; flex-wrap: wrap; }

.filter-btn {
    padding: 6px 14px;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.filter-btn:hover { border-color: var(--accent); color: var(--text-primary); }
.filter-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.search-bar { flex: 1; min-width: 200px; }
.search-bar input { width: 100%; }

.nft-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.nft-card-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
}

.nft-card-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.4);
    border-color: var(--accent);
}

.nft-card-item.legendary { border-color: var(--accent4); }
.nft-card-item.legendary:hover { box-shadow: 0 8px 30px rgba(255,215,0,0.2); }
.nft-card-item.epic { border-color: var(--accent3); }
.nft-card-item.minted::after {
    content: '✦ CREATED';
    position: absolute;
    top: 12px; right: 12px;
    background: linear-gradient(135deg, var(--accent4), #ff8c00);
    color: #000;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    z-index: 2;
}

.nft-card-img {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: contain;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.nft-card-img img {
    max-width: 100%;
    max-height: 100%;
    border-radius: 4px;
    background: #fff;
}

.nft-card-img .placeholder-img {
    font-size: 4rem;
    color: var(--text-muted);
}

.nft-card-info {
    width: 100%;
    min-width: 0;
    padding: 16px;
    border-top: 1px solid var(--border);
    overflow: hidden;
}

.nft-card-info h3 {
    min-width: 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.nft-card-info .nft-smiles {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    word-break: break-all;
    margin-bottom: 12px;
}

.nft-card-meta {
    display: flex;
    width: 100%;
    min-width: 0;
    gap: 8px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.nft-card-meta > .nft-property-pill {
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
}

.isomer-card-content, .isomer-card-copy {
    min-width: 0;
    max-width: 100%;
}

.isomer-card-copy code {
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.isomer-card-item {
    min-width: 0;
    overflow: hidden;
    cursor: pointer;
}

.nft-property-pill {
    min-width: 0;
    max-width: 100%;
    padding: 3px 8px;
    font-size: 0.65rem;
    font-family: var(--font-mono);
    background: var(--bg-input);
    border-radius: 4px;
    color: var(--text-secondary);
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.nft-card-actions {
    display: flex;
    min-width: 0;
    gap: 8px;
    padding: 0 16px 16px;
    flex-wrap: wrap;
}

.nft-card-actions .btn { flex: 1 1 120px; min-width: 0; justify-content: center; font-size: 0.75rem; }

/* ─── NFT Detail Modal ─── */
.nft-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.nft-detail-image img {
    width: 100%;
    border-radius: var(--radius);
    background: #fff;
}

.nft-detail-props {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.nft-detail-props dt {
    color: var(--text-muted);
    font-size: 0.7rem;
    text-transform: uppercase;
    margin-top: 12px;
}

.nft-detail-props dd {
    color: var(--text-primary);
    margin-bottom: 4px;
    word-break: break-all;
}

/* ─── Library Table ─── */
.library-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.library-table th {
    background: var(--bg-secondary);
    padding: 12px 16px;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

.library-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.library-table tr:hover td { background: var(--bg-card-hover); color: var(--text-primary); }

.library-smiles {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.library-actions { display: flex; gap: 6px; }

/* ─── 3D Viewer ─── */
.viewer-layout {
    display: grid;
    grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
    gap: 20px;
    align-items: stretch;
    width: 100%;
}

.viewer-sidebar,
.viewer-main {
    min-width: 0;
}

.viewer-main {
    position: relative;
    width: 100%;
}

.three-container {
    position: relative;
    width: 100%;
    height: clamp(500px, 68vh, 760px);
    min-height: 500px;
    aspect-ratio: 16 / 10;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
    display: block;
    isolation: isolate;
}

.three-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

.viewer-placeholder { pointer-events: none; }

.viewer-placeholder {
    text-align: center;
    color: var(--text-muted);
}

.viewer-placeholder i { margin-bottom: 16px; display: block; }
.viewer-placeholder h3 { font-size: 1.2rem; margin-bottom: 8px; color: var(--text-secondary); }
.viewer-placeholder p { font-size: 0.85rem; }

.viewer-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding: 12px 0;
    font-size: 0.75rem;
    color: var(--text-muted);
    align-items: center;
}

.color-dot {
    display: inline-block;
    width: 10px; height: 10px;
    border-radius: 50%;
    margin-right: 4px;
}

/* ─── ADMET ─── */
.admet-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 20px;
}

.admet-score-circle {
    text-align: center;
    padding: 20px;
}

.score-ring {
    position: relative;
    width: 140px; height: 140px;
    margin: 0 auto 16px;
}

.score-ring canvas { width: 100%; height: 100%; }

.score-value {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    font-weight: 800;
    font-family: var(--font-mono);
}

.admet-panels {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 16px;
}

.admet-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}

.admet-panel h4 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.admet-param {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid rgba(26,48,80,0.5);
    font-size: 0.8rem;
}

.admet-param-name { color: var(--text-muted); }
.admet-param-value {
    font-family: var(--font-mono);
    font-weight: 600;
}

.pass { color: var(--success); }
.fail { color: var(--danger); }
.warn { color: var(--warning); }

/* ─── Chart Containers ─── */
.chart-container {
    position: relative;
    width: 100%;
    min-height: 250px;
}

/* ─── Modal ─── */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active { display: flex; }

.modal-backdrop {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 24px;
    max-width: 700px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    z-index: 1;
}

.modal-content.modal-lg { max-width: 1000px; }

.modal-close {
    position: absolute;
    top: 12px; right: 16px;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition);
}

.modal-close:hover { color: var(--danger); }

/* ─── Toast Notifications ─── */
.toast-container {
    position: fixed;
    top: 20px; right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    animation: slideIn 0.3s ease;
    min-width: 280px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.toast.success { background: #064e3b; border: 1px solid var(--success); color: var(--success); }
.toast.error { background: #4c0519; border: 1px solid var(--danger); color: var(--danger); }
.toast.info { background: #0c1a3a; border: 1px solid var(--info); color: var(--info); }
.toast.warning { background: #4a3000; border: 1px solid var(--warning); color: var(--warning); }

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

/* ─── Empty State ─── */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state i { margin-bottom: 16px; display: block; }
.empty-state h3 { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 8px; }
.empty-state p { font-size: 0.85rem; }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ─── Responsive ─── */
@media (max-width: 1024px) {
    .viewer-layout, .admet-layout {
        grid-template-columns: 1fr;
    }
    .nft-detail-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: var(--sidebar-collapsed);
    }
    .main-content {
        margin-left: var(--sidebar-collapsed);
        padding: 16px;
    }
    .page-title { font-size: 1.4rem; }
    .sidebar .logo-text, .sidebar .nav-label {
        display: none;
    }
}

/* Robust content sizing and readable chemical strings */
.main-content, .tab-content, .card, .card-body, .viewer-layout, .admet-layout { min-width: 0; }
.card-body { overflow-wrap: anywhere; }
code, .library-smiles, .isomer-smiles { overflow-wrap: anywhere; word-break: break-word; white-space: normal; }
.isomer-grid-card, .isomer-card-item, .nft-card { min-width: 0; overflow: hidden; }
.isomer-structure { min-height: 130px; display: flex; align-items: center; justify-content: center; background: var(--bg-input); border-radius: 8px; overflow: hidden; }
.isomer-structure img { width: 100%; height: 130px; object-fit: contain; }
.isomer-fallback { display: none; max-width: 100%; padding: 12px; color: var(--text-secondary); font-size: .68rem; text-align: center; }
.isomer-structure.image-missing img { display: none; }
.isomer-structure.image-missing .isomer-fallback { display: block; }
.card-structure-image { width: 100%; height: 112px; object-fit: contain; border-radius: 8px; background: var(--bg-input); }
.library-table { width: 100%; table-layout: fixed; }
.library-table th, .library-table td { overflow: hidden; text-overflow: ellipsis; }
.library-table th:nth-child(3), .library-table td:nth-child(3) { width: 24%; white-space: normal; overflow-wrap: anywhere; }
.docking-layout { display: grid; grid-template-columns: minmax(280px, 360px) minmax(0, 1fr); gap: 20px; align-items: start; }
.docking-demo-panel { width: 100%; max-width: 1200px; margin: 0 auto 20px; }
.docking-demo-intro { margin-bottom: 14px; }
.docking-demos { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.docking-demo-card { min-width: 0; display: grid; gap: 8px; padding: 14px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius); }
.docking-demo-heading { display: flex; justify-content: space-between; gap: 8px; align-items: flex-start; color: var(--accent2); font-weight: 700; }
.docking-demo-heading code { color: var(--accent4); font-size: .7rem; white-space: nowrap; }
.docking-demo-card p, .docking-demo-card small { color: var(--text-secondary); font-size: .76rem; line-height: 1.45; overflow-wrap: anywhere; }
.docking-demo-card small { color: var(--text-muted); }
.docking-demo-card .btn { justify-self: start; }
.docking-options { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.docking-summary { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.docking-summary span { padding: 8px 10px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-secondary); font-size: .78rem; }
.docking-summary b { color: var(--accent2); font-family: var(--font-mono); }
.docking-warning { color: var(--warning); font-size: .78rem; line-height: 1.5; }
.pose-list { display: grid; gap: 8px; margin-top: 14px; }
.pose-row { display: flex; gap: 12px; align-items: center; padding: 12px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); min-width: 0; }
.pose-rank { flex: 0 0 42px; color: var(--accent4); font: 700 1.1rem var(--font-mono); }
.pose-main { display: grid; gap: 3px; min-width: 0; }
.pose-main strong { color: var(--accent2); }
.pose-main span, .pose-main code { color: var(--text-secondary); font-size: .74rem; overflow-wrap: anywhere; }
.pose-metrics { display: flex; flex-wrap: wrap; gap: 5px 10px; }
.pose-metrics span { color: var(--text-secondary); font-size: .72rem; }
.docking-validation { display: flex; flex-wrap: wrap; gap: 6px 12px; padding: 10px; margin: 10px 0; border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-secondary); font-size: .74rem; }
.docking-validation strong { color: var(--accent); width: 100%; }
.validation-pass { color: var(--success); }
.docking-energy-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 12px 0; }
.docking-energy-summary > div { min-width: 0; padding: 10px; background: var(--bg-input); border-radius: var(--radius-sm); }
.docking-energy-summary strong, .docking-energy-summary code { display: block; overflow-wrap: anywhere; }
.docking-energy-summary strong { color: var(--text-muted); font-size: .7rem; text-transform: uppercase; }
.docking-energy-summary code { margin-top: 3px; color: var(--accent4); font-size: .76rem; }
.docking-reference { display: grid; gap: 3px; padding: 10px; margin-bottom: 12px; border-left: 3px solid var(--accent2); background: var(--bg-input); }
.docking-reference strong { color: var(--accent2); }
.docking-reference span, .docking-reference small { color: var(--text-secondary); font-size: .75rem; overflow-wrap: anywhere; }
.viewer-placeholder { position: absolute; inset: 0; z-index: 2; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 10px; background: rgba(6,13,23,.84); color: var(--text-secondary); text-align: center; padding: 20px; }
.three-container { position: relative; }
.viewer-placeholder h3, .viewer-placeholder p { max-width: 34rem; }
.viewer-sidebar .card { height: 100%; }
@media (max-width: 1024px) {
    .three-container { height: 620px; }
}
@media (max-width: 700px) {
    .three-container { height: 520px; min-height: 420px; }
}
@media (max-width: 900px) { .docking-layout, .docking-demos { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .main-content { padding: 18px 12px; } .page-title { font-size: 1.45rem; } .smiles-input-wrapper { flex-direction: column; } .docking-options { grid-template-columns: 1fr; } .isomer-card-item > div { flex-wrap: wrap; } }

/* Detail modals and docking stay within the available content width. */
body.modal-open { overflow: hidden; }
.modal { padding: 16px; }
.modal-content, .nft-detail-grid, .nft-detail-props, .molecule-detail-grid, .detail-column { min-width: 0; }
.nft-detail-props, .detail-column { overflow-wrap: anywhere; }
.modal-backdrop { z-index: 0; cursor: default; }
.modal-content { min-width: 0; overflow-x: hidden; overflow-y: auto; }
.modal-close { z-index: 3; pointer-events: auto; width: 36px; height: 36px; line-height: 30px; padding: 0; }
.detail-title, .detail-heading { overflow-wrap: anywhere; word-break: break-word; }
.detail-title { color: var(--accent); margin: 0 40px 16px 0; font-size: 1.15rem; }
.molecule-detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; min-width: 0; }
.detail-column { min-width: 0; overflow: hidden; }
.detail-heading { color: var(--text-secondary); margin-bottom: 8px; font-size: .9rem; }
.detail-table { width: 100%; max-width: 100%; table-layout: fixed; border-collapse: collapse; font-size: .82rem; }
.detail-table td { padding: 5px 4px; vertical-align: top; overflow-wrap: anywhere; word-break: break-word; }
.detail-table td:first-child { width: 48%; color: var(--text-muted); }
.detail-table td:last-child { color: var(--text-primary); font-family: var(--font-mono); }
.docking-layout { width: 100%; max-width: 1200px; margin: 0 auto; }
.docking-controls, .docking-results { min-width: 0; }
.docking-controls input { min-width: 0; }
.viewer-error { color: var(--danger); }

@media (max-width: 700px) {
    .molecule-detail-grid { grid-template-columns: minmax(0, 1fr); gap: 14px; }
    .modal-content { width: 100%; padding: 20px 16px; }
    .docking-layout { grid-template-columns: minmax(0, 1fr); }
}