/* ===== VARIABLES ===== */
:root {
    /* Colors - Telegram Theme */
    --primary: #2AABEE;
    --primary-dark: #1E8BC3;
    --primary-light: #64BFED;
    --secondary: #8E44AD;
    --accent: #E74C3C;
    --success: #27AE60;
    --warning: #F39C12;
    --danger: #E74C3C;
    
    /* Dark Theme Colors */
    --bg-primary: #0A0E1A;
    --bg-secondary: #12182B;
    --bg-tertiary: #1A2332;
    --bg-card: #1E2739;
    --bg-hover: #252D40;
    
    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #B4B9C7;
    --text-muted: #6B7280;
    --text-accent: var(--primary);
    
    /* Border & Dividers */
    --border: #2A3447;
    --border-light: #374151;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(42, 171, 238, 0.3);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Container */
    --container-width: 1200px;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-light);
}

code {
    font-family: var(--font-mono);
    background: var(--bg-tertiary);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    color: var(--primary-light);
}

pre {
    font-family: var(--font-mono);
    overflow-x: auto;
    line-height: 1.5;
}

/* ===== CONTAINER ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== PROGRESS BAR ===== */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--bg-secondary);
    z-index: 9999;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    width: 0%;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px var(--primary);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    font-family: var(--font-sans);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(42, 171, 238, 0.1) 0%, transparent 70%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 0.8; }
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.badge {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.badge-primary {
    background: rgba(42, 171, 238, 0.15);
    border: 1px solid rgba(42, 171, 238, 0.3);
    color: var(--primary-light);
}

.badge-secondary {
    background: rgba(142, 68, 173, 0.15);
    border: 1px solid rgba(142, 68, 173, 0.3);
    color: #A569BD;
}

.badge-accent {
    background: rgba(231, 76, 60, 0.15);
    border: 1px solid rgba(231, 76, 60, 0.3);
    color: #EC7063;
}

.hero-title {
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-demo {
    margin-top: var(--spacing-2xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.demo-placeholder {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-muted);
}

.demo-placeholder svg {
    color: var(--primary);
}

/* ===== SECTIONS ===== */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== CARDS ===== */
.cards-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.two-cols {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.three-cols {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.card.visible {
    opacity: 1;
    transform: translateY(0);
}

.card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.card-highlight {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.card-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.card-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.card-text.code-like {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
}

.card-metric {
    font-size: 1.125rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
}

.card-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--primary);
    font-size: 0.9rem;
}

.card-link:hover {
    color: var(--primary-light);
}

/* ===== RESOURCE CARDS ===== */
.card-resource {
    position: relative;
}

.resource-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.resource-icon {
    font-size: 2.5rem;
}

.resource-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
}

.resource-links a {
    color: var(--primary);
}

.resource-links span {
    color: var(--text-muted);
}

/* ===== STEPS ===== */
.steps {
    max-width: 900px;
    margin: 0 auto;
}

.step {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.step.visible {
    opacity: 1;
    transform: translateY(0);
}

.step.active-step {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.step-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-title {
    margin: 0;
    font-size: 1.5rem;
}

.step-content {
    padding: var(--spacing-lg);
}

.step-list {
    list-style-position: inside;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.step-list li {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
}

.step-list li strong {
    color: var(--text-primary);
}

/* ===== TERMINAL ===== */
.terminal {
    background: #1A1E2E;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin: var(--spacing-md) 0;
}

.terminal-header {
    background: #252936;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #2A2F3F;
}

.terminal-buttons {
    display: flex;
    gap: 0.5rem;
}

.terminal-buttons span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: block;
}

.terminal-buttons span:nth-child(1) {
    background: #FF5F56;
}

.terminal-buttons span:nth-child(2) {
    background: #FFBD2E;
}

.terminal-buttons span:nth-child(3) {
    background: #27C93F;
}

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-muted);
    flex: 1;
    text-align: center;
}

.copy-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-sans);
}

.copy-btn:hover {
    background: var(--primary-dark);
}

.copy-btn.copied {
    background: var(--success);
}

.terminal-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: #E0E0E0;
    overflow-x: auto;
}

.terminal-body code {
    background: transparent;
    padding: 0;
    color: inherit;
}

.terminal-body.output {
    color: var(--success);
}

.terminal-scrollable {
    max-height: 500px;
    overflow-y: auto;
}

.terminal-large {
    margin: var(--spacing-lg) 0;
}

/* ===== ALERTS ===== */
.alert {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.alert-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
}

.alert-content strong {
    display: block;
    margin-bottom: 0.5rem;
}

.alert-danger {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.3);
}

.alert-warning {
    background: rgba(243, 156, 18, 0.1);
    border: 1px solid rgba(243, 156, 18, 0.3);
}

.alert-info {
    background: rgba(42, 171, 238, 0.1);
    border: 1px solid rgba(42, 171, 238, 0.3);
}

/* ===== TOKEN INPUTS ===== */
.token-inputs {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-weight: 500;
    color: var(--text-primary);
}

.input-group input {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: var(--font-mono);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(42, 171, 238, 0.1);
}

.input-group input::placeholder {
    color: var(--text-muted);
}

/* ===== TABS ===== */
.tabs {
    margin-top: var(--spacing-xl);
}

.tabs-nav {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
}

.tab-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    color: var(--text-secondary);
    font-family: var(--font-sans);
}

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

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

.tab-content {
    display: none;
}

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

/* ===== EXAMPLES ===== */
.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.example-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.example-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.example-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.example-hint {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.test-question {
    border-color: var(--primary);
    border-width: 2px;
    margin-top: var(--spacing-lg);
}

.test-question .code-block-header {
    background: rgba(42, 171, 238, 0.1);
}

.test-question .code-block-header span {
    color: var(--primary);
    font-weight: 600;
}

.code-block {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.code-block-header {
    background: var(--bg-secondary);
    padding: 0.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.code-block-header span {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.copy-btn-small {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-sans);
}

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

.copy-btn-small.copied {
    border-color: var(--success);
    color: var(--success);
}

.code-block-body {
    padding: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
    max-height: 300px;
    overflow-y: auto;
}

.code-block-body p {
    margin: 0;
}

/* ===== API SCHEMA ===== */
.api-schema {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.api-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.api-block-title {
    font-family: var(--font-mono);
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.api-block-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.api-field {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.field-name {
    color: var(--text-primary);
    font-weight: 600;
}

.field-type {
    color: var(--secondary);
}

.field-optional {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.field-desc {
    color: var(--text-muted);
}

.api-url-example h4 {
    margin-bottom: var(--spacing-md);
}

/* ===== IDEAS ===== */
.ideas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.idea-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.idea-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.idea-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.idea-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.idea-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.idea-text {
    color: var(--text-secondary);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-column h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

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

.footer-column li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* ===== SKIP LINK ===== */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 0.75rem 1rem;
    z-index: 10000;
}

.skip-link:focus {
    top: 0;
}

/* ===== UTILITY CLASSES ===== */
.text-muted {
    color: var(--text-muted);
}

.text-red {
    color: var(--danger);
}

.text-green {
    color: var(--success);
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 1rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

.mt-5 {
    margin-top: 2rem;
}

.mb-3 {
    margin-bottom: 1rem;
}

.center {
    justify-content: center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero {
        min-height: 80vh;
        padding: var(--spacing-xl) 0;
    }
    
    .hero-badges {
        flex-direction: column;
        align-items: center;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .tabs-nav {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
        text-align: center;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .step-header {
        flex-direction: column;
        text-align: center;
    }
    
    .step-title {
        font-size: 1.25rem;
    }
    
    .terminal-body {
        font-size: 0.8rem;
        padding: 1rem;
    }
    
    .code-block-body {
        font-size: 0.85rem;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .hero-badges .badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    .copy-btn {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
    
    .terminal-title {
        font-size: 0.75rem;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .progress-bar,
    .back-to-top,
    .copy-btn,
    .copy-btn-small,
    .hero-demo {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .card,
    .step,
    .terminal {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes rainbow {
    0% { filter: hue-rotate(0deg); }
    100% { filter: hue-rotate(360deg); }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: var(--radius-sm);
}

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

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

::-moz-selection {
    background: var(--primary);
    color: white;
}

/* ===== FOCUS VISIBLE ===== */
*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ===== EXTERNAL LINKS ===== */
.external-link::after {
    content: ' ↗';
    font-size: 0.8em;
    vertical-align: super;
}