/* ============================================
   Helium AI Coder - Design System
   Brutalist Tech Aesthetic with Neon Accents
   ============================================ */

/* CSS Variables */
:root {
    /* Colors - Brutalist Tech */
    --color-bg: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a25;
    --color-surface: #222230;
    --color-surface-hover: #2a2a3a;
    
    /* Neon Accents */
    --color-primary: #00f5d4;
    --color-primary-dark: #00c4a8;
    --color-secondary: #ff006e;
    --color-accent: #8338ec;
    --color-warning: #ffbe0b;
    
    /* Text Colors */
    --color-text: #ffffff;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #6b6b7b;
    
    /* Code Colors */
    --code-keyword: #ff79c6;
    --code-string: #f1fa8c;
    --code-function: #50fa7b;
    --code-comment: #6272a4;
    --code-class: #8be9fd;
    --code-type: #bd93f9;
    --code-decorator: #ffb86c;
    
    /* Typography */
    --font-display: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 40px rgba(0, 245, 212, 0.1);
    --shadow-glow: 0 0 40px rgba(0, 245, 212, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

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

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

/* Noise Overlay */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-text);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: var(--color-surface-hover);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-ghost:hover {
    color: var(--color-text);
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
}

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
}

.btn-small {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    padding: var(--space-sm);
    border-radius: var(--radius-md);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: calc(80px + var(--space-4xl)) var(--space-lg) var(--space-4xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 245, 212, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 245, 212, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 70%);
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.glow-1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    right: -200px;
    animation: float 8s ease-in-out infinite;
}

.glow-2 {
    width: 400px;
    height: 400px;
    background: var(--color-accent);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.1); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 1;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: rgba(0, 245, 212, 0.1);
    border: 1px solid rgba(0, 245, 212, 0.2);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xl);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

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

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-3xl);
    flex-wrap: wrap;
}

/* Code Preview Card */
.code-preview {
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    overflow: hidden;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transform: perspective(1000px) rotateX(5deg);
    transition: transform var(--transition-slow);
}

.code-preview:hover {
    transform: perspective(1000px) rotateX(0deg);
}

.code-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-surface);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.code-dots {
    display: flex;
    gap: 6px;
}

.code-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.code-dots span:nth-child(1) { background: #ff5f56; }
.code-dots span:nth-child(2) { background: #ffbd2e; }
.code-dots span:nth-child(3) { background: #27c93f; }

.code-filename {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.code-actions {
    margin-left: auto;
}

.code-action {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.code-action:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

.code-content {
    padding: var(--space-lg);
    overflow-x: auto;
}

.code-content pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.7;
}

.code-line {
    display: block;
}

.code-keyword { color: var(--code-keyword); }
.code-string { color: var(--code-string); }
.code-function { color: var(--code-function); }
.code-comment { color: var(--code-comment); }
.code-class { color: var(--code-class); }
.code-type { color: var(--code-type); }
.code-decorator { color: var(--code-decorator); }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: var(--space-4xl) 0;
    background: var(--color-bg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(0, 245, 212, 0.1);
    border: 1px solid rgba(0, 245, 212, 0.2);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: rgba(0, 245, 212, 0.2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-large {
    grid-column: span 2;
}

.feature-icon {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-desc {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.feature-languages {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.lang-tag {
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

/* ============================================
   Demo Section
   ============================================ */
.demo {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-secondary);
}

.demo-interface {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    max-width: 1200px;
    margin: 0 auto;
}

/* Chat Panel */
.chat-panel {
    background: var(--color-bg);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    height: 600px;
    overflow: hidden;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-surface);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.chat-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg);
}

.chat-avatar svg {
    width: 24px;
    height: 24px;
}

.chat-info {
    display: flex;
    flex-direction: column;
}

.chat-name {
    font-weight: 600;
    font-size: 0.9375rem;
}

.chat-status {
    font-size: 0.75rem;
    color: var(--color-primary);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.message {
    display: flex;
    gap: var(--space-md);
    max-width: 85%;
}

.message-ai {
    align-self: flex-start;
}

.message-user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 32px;
    height: 32px;
    background: var(--color-surface);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-primary);
}

.message-avatar svg {
    width: 16px;
    height: 16px;
}

.message-content {
    background: var(--color-surface);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border-bottom-left-radius: 4px;
    font-size: 0.9375rem;
    line-height: 1.6;
}

.message-user .message-content {
    background: var(--color-primary);
    color: var(--color-bg);
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: 4px;
}

.message-hint {
    margin-top: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* Chat Input */
.chat-input-area {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background: var(--color-bg);
}

.chat-input-wrapper {
    display: flex;
    gap: var(--space-sm);
    background: var(--color-surface);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--space-sm);
}

.chat-input-wrapper textarea {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text);
    font-family: var(--font-display);
    font-size: 0.9375rem;
    resize: none;
    outline: none;
    min-height: 24px;
    max-height: 120px;
}

.chat-input-wrapper textarea::placeholder {
    color: var(--color-text-muted);
}

.btn-send {
    background: var(--color-primary);
    color: var(--color-bg);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-send:hover {
    background: var(--color-primary-dark);
    transform: scale(1.05);
}

.input-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

/* Code Panel */
.code-panel {
    background: var(--color-bg);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    height: 600px;
    overflow: hidden;
}

.code-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-surface);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.code-tabs {
    display: flex;
    gap: var(--space-xs);
}

.code-tab {
    padding: var(--space-xs) var(--space-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.code-tab:hover {
    color: var(--color-text);
}

.code-tab.active {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.code-panel-actions {
    display: flex;
    gap: var(--space-sm);
}

.code-panel-content {
    flex: 1;
    overflow: auto;
    padding: var(--space-lg);
    background: var(--color-bg-secondary);
}

.code-display {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.8;
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing {
    padding: var(--space-4xl) 0;
    background: var(--color-bg);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    position: relative;
    transition: all var(--transition-base);
}

.pricing-card:hover {
    border-color: rgba(0, 245, 212, 0.2);
    transform: translateY(-4px);
}

.pricing-popular {
    border-color: var(--color-primary);
    box-shadow: 0 0 40px rgba(0, 245, 212, 0.1);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-primary);
    color: var(--color-bg);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 100px;
    text-transform: uppercase;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.pricing-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-xs);
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
}

.period {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.pricing-features li svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--space-3xl) 0 var(--space-xl);
    background: var(--color-bg-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo-icon {
    margin-bottom: var(--space-md);
}

.footer-tagline {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.footer-column a {
    display: block;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

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

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

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .demo-interface {
        grid-template-columns: 1fr;
    }
    
    .feature-large {
        grid-column: span 1;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        padding: var(--space-md);
    }
    
    .nav-links {
        display: none;
    }
    
    .hero {
        padding-top: calc(60px + var(--space-2xl));
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .code-preview {
        transform: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: var(--space-md);
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-10px); }
}