:root {
    /* Primary colors - Refined Palette */
    --primary-color: #4F46E5; /* Indigo 600 */
    --primary-hover: #4338CA; /* Indigo 700 */
    --secondary-color: #0EA5E9; /* Sky 500 */
    --accent-color: #8B5CF6; /* Violet 500 */

    /* Status colors */
    --success-color: #10B981; /* Emerald 500 */
    --warning-color: #F59E0B; /* Amber 500 */
    --danger-color: #EF4444; /* Red 500 */
    --info-color: #3B82F6; /* Blue 500 */

    /* Neutral colors */
    --bg-body: #F3F4F6; /* Gray 100 */
    --bg-surface: #FFFFFF;
    --text-primary: #111827; /* Gray 900 */
    --text-secondary: #4B5563; /* Gray 600 */
    --text-muted: #9CA3AF; /* Gray 400 */
    --border-color: #E5E7EB; /* Gray 200 */

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
    font-size: 1.5rem;
    letter-spacing: -0.025em;
}

/* Exclude Bootstrap tab triggers — they use .nav-link but get their own colors in index (active tab is primary on white text). A global .nav-link { color: ... !important } was overriding that and made labels match the blue background. */
.nav-link:not([data-bs-toggle="tab"]) {
    color: var(--text-secondary) !important;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:not([data-bs-toggle="tab"]):hover,
.nav-link:not([data-bs-toggle="tab"]).active {
    color: var(--primary-color) !important;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
    margin-bottom: 3rem;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255,255,255,0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-title {
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: 1.5rem;
}

.hero-lead {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
}

/* Cards */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* Buttons */
.btn {
    border-radius: 0.5rem;
    font-weight: 600;
    padding: 0.625rem 1.25rem;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Stats Cards */
.stat-card {
    border-left: 4px solid transparent;
}

.stat-card.moonlighting { border-left-color: var(--warning-color); }
.stat-card.canonical { border-left-color: var(--success-color); }
.stat-card.proteins { border-left-color: var(--danger-color); }

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

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

/* Badges */
.badge {
    padding: 0.35em 0.65em;
    font-weight: 600;
    border-radius: 9999px;
}

.badge-moonlighting {
    background-color: #FEF3C7;
    color: #92400E;
}

.badge-canonical {
    background-color: #D1FAE5;
    color: #065F46;
}

/* Forms */
.form-control, .form-select {
    border-radius: 0.5rem;
    border-color: var(--border-color);
    padding: 0.625rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Footer */
.footer {
    margin-top: auto;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Utilities */
.text-gradient {
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-image: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

/* Forces the element to show only 2 lines and hide the rest cleanly */
.clamp-rows {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Optional: Smooth transition for the arrow icon */
.collapse-btn i {
    transition: transform 0.2s;
}

/* =========================================================================
   Cross-database annotations (MoonDB / MoonProt / MultiTaskProtDB / GeneCards)
   ========================================================================= */

/* Prominent alert shown when the searched gene is NOT in MoonLitDB
   (or on the no-results page) so users immediately notice annotations
   from external moonlighting-protein databases. */
.external-db-alert {
    max-width: 760px;
    text-align: left;
    padding: 1.25rem 1.5rem;
    border-radius: 0.9rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    background: var(--bg-surface);
}

.external-db-alert-hit {
    border: 2px solid var(--warning-color);
    background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%);
    box-shadow: 0 6px 20px -6px rgba(245, 158, 11, 0.45);
    animation: externalDbPulse 2.4s ease-in-out 1;
}

.external-db-alert-miss {
    border: 1px dashed var(--border-color);
    background: #F9FAFB;
}

@keyframes externalDbPulse {
    0%   { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.55); }
    60%  { box-shadow: 0 0 0 12px rgba(245, 158, 11, 0); }
    100% { box-shadow: 0 6px 20px -6px rgba(245, 158, 11, 0.45); }
}

.external-db-heading {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.35;
}

.external-db-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.external-db-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1rem;
    padding: 0.5rem 0.75rem;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 0.6rem;
}

.external-db-label {
    min-width: 9rem;
    font-size: 0.95rem;
}

.external-db-link {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px dotted transparent;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.external-db-link:hover,
.external-db-link:focus {
    color: var(--primary-hover);
    border-bottom-color: var(--primary-hover);
}

.external-db-value {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.9rem;
}

.external-db-status {
    display: inline-flex;
    align-items: center;
    padding: 0.15rem 0.6rem;
    border-radius: 9999px;
    font-weight: 600;
    font-size: 0.8rem;
}

.external-db-status-yes {
    background-color: #D1FAE5;
    color: #065F46;
    border: 1px solid #6EE7B7;
}

.external-db-status-no {
    background-color: #F3F4F6;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    font-weight: 500;
}

.external-db-status-link {
    background-color: #EEF2FF;
    color: var(--primary-color);
    border: 1px solid #C7D2FE;
    font-weight: 500;
}

/* Compact variant used inside gene cards that ARE in MoonLitDB. */
.external-db-block-compact {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.external-db-block-compact .external-db-compact-title {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
}

.external-db-block-compact .external-db-row {
    padding: 0.25rem 0.5rem;
    background: transparent;
    border: none;
    gap: 0.35rem 0.75rem;
}

.external-db-block-compact .external-db-label {
    min-width: 8rem;
}