/* ===== CSS Variables & Theme ===== */
:root {
    /* Light mode - calming sleep theme */
    --bg-primary: #f0f4ff;
    --bg-secondary: #e8edff;
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-card-solid: #ffffff;
    --text-primary: #1a1f36;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --border-color: rgba(99, 102, 241, 0.2);
    --shadow-sm: 0 2px 8px rgba(99, 102, 241, 0.1);
    --shadow-md: 0 8px 32px rgba(99, 102, 241, 0.15);
    --shadow-lg: 0 20px 60px rgba(99, 102, 241, 0.2);
    --glass-blur: 20px;
    --glass-border: 1px solid rgba(255, 255, 255, 0.3);
    --neo-border: 3px solid #1a1f36;
    --neo-shadow: 4px 4px 0px #1a1f36;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* Dark mode - deep sleep theme */
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a3e;
    --bg-card: rgba(30, 30, 60, 0.6);
    --bg-card-solid: #1e1e3c;
    --text-primary: #f0f4ff;
    --text-secondary: #c7d2fe;
    --text-muted: #94a3b8;
    --accent-primary: #818cf8;
    --accent-secondary: #a78bfa;
    --accent-gradient: linear-gradient(135deg, #818cf8 0%, #a78bfa 50%, #c084fc 100%);
    --border-color: rgba(129, 140, 248, 0.3);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --neo-border: 3px solid #f0f4ff;
    --neo-shadow: 4px 4px 0px #f0f4ff;
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Glassmorphism ===== */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* ===== Header & Navigation ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: var(--glass-border);
    transition: var(--transition);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.4rem;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    font-size: 1.8rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.theme-toggle {
    background: var(--bg-card-solid);
    border: var(--neo-border);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition);
    box-shadow: var(--neo-shadow);
}

.theme-toggle:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--text-primary);
}

.theme-toggle:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0px var(--text-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    padding: 140px 0 80px;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--accent-gradient);
    opacity: 0.05;
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--accent-primary) 0%, transparent 50%);
    opacity: 0.1;
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.1; }
    50% { transform: scale(1.1); opacity: 0.15; }
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 20px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ===== Calculator Section ===== */
.calculator-section {
    padding: 40px 0 80px;
}

.calculator-card {
    max-width: 700px;
    margin: 0 auto;
    padding: 40px;
}

/* ===== Tabs ===== */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    background: var(--bg-secondary);
    padding: 8px;
    border-radius: var(--radius-md);
}

.tab-btn {
    flex: 1;
    padding: 14px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.tab-btn.active {
    background: var(--bg-card-solid);
    color: var(--accent-primary);
    box-shadow: var(--shadow-sm);
}

.tab-icon {
    font-size: 1.2rem;
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Forms ===== */
.calculator-form h2 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-desc {
    color: var(--text-muted);
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.input-field {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    background: var(--bg-card-solid);
    color: var(--text-primary);
    transition: var(--transition);
}

.input-field:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.input-field:hover {
    border-color: var(--accent-secondary);
}

/* ===== Buttons ===== */
.btn {
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    border: var(--neo-border);
    box-shadow: var(--neo-shadow);
}

.btn-primary:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--text-primary);
}

.btn-primary:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0px var(--text-primary);
}

.btn-secondary {
    background: var(--bg-card-solid);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.btn-full {
    width: 100%;
    margin-top: 8px;
}

/* ===== Results ===== */
.results-section {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 2px solid var(--border-color);
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.results-section h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.results-desc {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.result-item {
    padding: 20px 16px;
    background: var(--bg-card-solid);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
}

.result-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.result-item.recommended {
    border-color: var(--accent-primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
}

.result-time {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.result-cycles {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.result-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--accent-primary);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 10px;
    margin-top: 6px;
}

/* ===== Share Section ===== */
.share-section {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.share-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.share-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.share-btn {
    padding: 10px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-card-solid);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.share-btn:hover {
    transform: translateY(-2px);
}

.share-btn.twitter:hover {
    background: #1da1f2;
    color: white;
    border-color: #1da1f2;
}

.share-btn.facebook:hover {
    background: #4267b2;
    color: white;
    border-color: #4267b2;
}

.share-btn.linkedin:hover {
    background: #0077b5;
    color: white;
    border-color: #0077b5;
}

.share-btn.copy:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.copy-feedback {
    display: block;
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--success);
    opacity: 0;
    transition: var(--transition);
}

.copy-feedback.show {
    opacity: 1;
}

/* ===== Sleep Debt Tracker ===== */
.sleep-log {
    margin: 20px 0;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.sleep-log-header {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    padding: 12px 16px;
    background: var(--bg-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.sleep-log-entry {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    align-items: center;
    transition: var(--transition);
}

.sleep-log-entry:hover {
    background: var(--bg-secondary);
}

.sleep-log-entry .delete-btn {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 4px 8px;
    border-radius: 4px;
    transition: var(--transition);
}

.sleep-log-entry .delete-btn:hover {
    background: rgba(239, 68, 68, 0.1);
}

.add-entry {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 8px;
    padding: 12px 16px;
    border-top: 2px solid var(--border-color);
    background: var(--bg-card-solid);
}

.add-entry .input-field {
    padding: 10px 12px;
    font-size: 0.9rem;
}

.add-entry .btn {
    padding: 10px 16px;
    font-size: 0.9rem;
}

.debt-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.debt-stat {
    text-align: center;
    padding: 20px;
    background: var(--bg-card-solid);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
}

.debt-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.debt-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.debt-tip {
    padding: 20px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-primary);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Tips Section ===== */
.tips-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 12px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 48px;
    font-size: 1.05rem;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.tip-card {
    padding: 32px;
    transition: var(--transition);
}

.tip-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.tip-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.tip-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.tip-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== How It Works ===== */
.how-it-works {
    padding: 80px 0;
}

.cycle-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.cycle-step {
    text-align: center;
    padding: 24px;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    margin: 0 auto 16px;
    box-shadow: var(--neo-shadow);
    border: var(--neo-border);
}

.cycle-step h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.cycle-step p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.cycle-info {
    padding: 32px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cycle-info p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* ===== FAQ Section ===== */
.faq-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    padding: 4px 24px;
    transition: var(--transition);
    cursor: pointer;
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-item summary {
    padding: 20px 0;
    font-weight: 600;
    font-size: 1.05rem;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--accent-primary);
    transition: var(--transition);
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item p {
    padding-bottom: 20px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    padding: 60px 0 30px;
    border-top: var(--glass-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 16px;
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Page Styles (for sub-pages) ===== */
.page-hero {
    padding: 140px 0 60px;
    text-align: center;
}

.page-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: 40px 0 80px;
}

.content-card {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px;
}

.content-card h2 {
    font-size: 1.5rem;
    margin: 32px 0 16px;
    color: var(--text-primary);
}

.content-card h2:first-child {
    margin-top: 0;
}

.content-card h3 {
    font-size: 1.2rem;
    margin: 24px 0 12px;
    color: var(--text-primary);
}

.content-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.content-card ul,
.content-card ol {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
    padding-left: 24px;
}

.content-card li {
    margin-bottom: 8px;
}

.content-card a {
    color: var(--accent-primary);
    text-decoration: none;
}

.content-card a:hover {
    text-decoration: underline;
}

/* ===== Contact Form ===== */
.contact-form {
    margin-top: 24px;
}

.contact-form .input-group {
    margin-bottom: 20px;
}

.contact-form textarea.input-field {
    min-height: 150px;
    resize: vertical;
    font-family: inherit;
}

.form-feedback {
    padding: 16px;
    border-radius: var(--radius-sm);
    margin-top: 16px;
    display: none;
}

.form-feedback.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.form-feedback.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.input-error {
    border-color: var(--danger) !important;
}

.error-message {
    color: var(--danger);
    font-size: 0.85rem;
    margin-top: 6px;
    display: none;
}

.error-message.show {
    display: block;
}

/* ===== Responsive Design ===== */
@media (max-width: 900px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-card-solid);
        padding: 20px;
        gap: 16px;
        border-bottom: var(--glass-border);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .calculator-card {
        padding: 24px;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        justify-content: flex-start;
    }
    
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .debt-summary {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .content-card {
        padding: 32px 24px;
    }
    
    .cycle-steps {
        grid-template-columns: 1fr;
    }
    
    .add-entry {
        grid-template-columns: 1fr;
    }
    
    .sleep-log-header,
    .sleep-log-entry {
        grid-template-columns: 1fr 1fr auto;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 120px 0 60px;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .share-buttons {
        justify-content: center;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

/* ===== Selection ===== */
::selection {
    background: var(--accent-primary);
    color: white;
}