/* Alpha AI — Volcanic Glass Design System */
/* Palette: #1A1A1A, #333333, #FF6B2B, #FFB088 */

:root {
    /* Colors */
    --color-bg: #0A0A0A;
    --color-bg-elevated: #141414;
    --color-bg-card: #1A1A1A;
    --color-surface: #252525;
    --color-border: #333333;
    --color-text-primary: #FAFAFA;
    --color-text-secondary: #A0A0A0;
    --color-text-muted: #666666;
    --color-accent: #FF6B2B;
    --color-accent-light: #FFB088;
    --color-accent-dark: #E55A1B;
    
    /* Typography */
    --font-display: 'Clash Grotesk', 'Inter', system-ui, sans-serif;
    --font-body: 'Newsreader', Georgia, serif;
    --font-mono: 'SF Mono', 'Monaco', monospace;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 10rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(255, 107, 43, 0.15);
}

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

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

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

/* Grain Overlay */
.grain-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='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Particle Canvas */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* 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, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-base);
}

.nav-brand {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 400;
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: var(--transition-base);
}

.nav-links a:hover {
    color: var(--color-text-primary);
}

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

.nav-cta {
    padding: var(--space-xs) var(--space-md);
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
}

.nav-cta:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: calc(var(--space-3xl) + 80px) var(--space-xl) var(--space-3xl);
    gap: var(--space-2xl);
    z-index: 1;
}

.hero-content {
    max-width: 640px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(255, 107, 43, 0.1);
    border: 1px solid rgba(255, 107, 43, 0.2);
    border-radius: 100px;
    font-family: var(--font-display);
    font-size: 0.8rem;
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
}

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

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

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 600;
    line-height: 0.95;
    letter-spacing: -0.04em;
    margin-bottom: var(--space-md);
}

.title-line {
    display: block;
}

.title-line-accent {
    color: var(--color-accent);
    position: relative;
}

.title-line-accent::after {
    content: '';
    position: absolute;
    bottom: 0.1em;
    left: 0;
    width: 100%;
    height: 0.1em;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    opacity: 0.5;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
    border: none;
}

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

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

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

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

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

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

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

.hero-stats {
    display: flex;
    gap: var(--space-xl);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    height: 100%;
    min-height: 500px;
}

.glass-card {
    position: absolute;
    padding: var(--space-md);
    background: rgba(26, 26, 26, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    animation: float 6s ease-in-out infinite;
}

.glass-card-1 {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.glass-card-2 {
    top: 40%;
    right: 5%;
    animation-delay: -2s;
}

.glass-card-3 {
    bottom: 15%;
    left: 20%;
    animation-delay: -4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 107, 43, 0.1);
    border-radius: 12px;
    color: var(--color-accent);
}

.card-content {
    display: flex;
    flex-direction: column;
}

.card-label {
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.card-status {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

/* Features Section */
.features {
    position: relative;
    padding: var(--space-3xl) var(--space-xl);
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-eyebrow {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    transition: var(--transition-base);
}

.feature-card:hover {
    border-color: rgba(255, 107, 43, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.feature-card-wide {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 107, 43, 0.1);
    border-radius: 16px;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.feature-card-large .feature-icon,
.feature-card-wide .feature-icon {
    width: 80px;
    height: 80px;
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

.feature-card-large .feature-title {
    font-size: 1.8rem;
}

.feature-desc {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.feature-tags {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.tag {
    padding: 4px 12px;
    background: rgba(255, 107, 43, 0.1);
    border: 1px solid rgba(255, 107, 43, 0.2);
    border-radius: 100px;
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--color-accent);
}

.feature-code {
    background: var(--color-bg);
    border-radius: 12px;
    padding: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.8;
    overflow-x: auto;
}

.code-keyword { color: #ff79c6; }
.code-function { color: #8be9fd; }
.code-string { color: #f1fa8c; }
.code-number { color: #bd93f9; }

/* Capabilities Section */
.capabilities {
    position: relative;
    padding: var(--space-3xl) var(--space-xl);
    z-index: 1;
    background: linear-gradient(180deg, transparent 0%, rgba(255, 107, 43, 0.03) 50%, transparent 100%);
}

.capabilities-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    max-width: 1400px;
    margin: 0 auto;
    align-items: center;
}

.capabilities-text .section-title {
    text-align: left;
    margin-bottom: var(--space-md);
}

.capabilities-desc {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.capabilities-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.capability-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: 1rem;
}

.capability-check {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 107, 43, 0.1);
    border-radius: 6px;
    color: var(--color-accent);
}

.capabilities-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.metric-ring {
    position: relative;
    width: 300px;
    height: 300px;
}

.ring-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.ring-bg {
    fill: none;
    stroke: var(--color-border);
    stroke-width: 8;
}

.ring-progress {
    fill: none;
    stroke: var(--color-accent);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 502;
    stroke-dashoffset: 5;
    animation: ring-progress 2s ease-out;
}

@keyframes ring-progress {
    from { stroke-dashoffset: 502; }
    to { stroke-dashoffset: 5; }
}

.ring-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.ring-value {
    display: block;
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 600;
    color: var(--color-accent);
}

.ring-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Testimonials Section */
.testimonials {
    position: relative;
    padding: var(--space-3xl) var(--space-xl);
    z-index: 1;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    max-width: 1400px;
    margin: 0 auto;
}

.testimonial-card {
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    transition: var(--transition-base);
}

.testimonial-card:hover {
    border-color: rgba(255, 107, 43, 0.2);
}

.testimonial-quote {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    font-style: italic;
}

.testimonial-quote::before {
    content: '"';
    color: var(--color-accent);
    font-size: 2rem;
    line-height: 1;
    margin-right: 0.2em;
}

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

.author-avatar {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    border-radius: 50%;
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-bg);
}

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

.author-name {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

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

/* CTA Section */
.cta {
    position: relative;
    padding: var(--space-3xl) var(--space-xl);
    z-index: 1;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
}

.cta-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

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

/* Footer */
.footer {
    position: relative;
    padding: var(--space-2xl) var(--space-xl) var(--space-lg);
    z-index: 1;
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-2xl);
    max-width: 1400px;
    margin: 0 auto;
    margin-bottom: var(--space-xl);
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: var(--space-sm);
}

.footer-tagline {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    max-width: 280px;
}

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

.footer-column h4 {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.footer-column a {
    display: block;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: var(--space-xs);
    transition: var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    border-radius: 8px;
    transition: var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-accent);
    background: rgba(255, 107, 43, 0.1);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-card-large,
    .feature-card-wide {
        grid-column: span 2;
    }
    
    .capabilities-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .capabilities-text .section-title {
        text-align: center;
    }
    
    .capabilities-list {
        align-items: center;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .nav {
        padding: var(--space-sm) var(--space-md);
    }
    
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: calc(var(--space-2xl) + 60px) var(--space-md) var(--space-2xl);
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card-large,
    .feature-card-wide {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }
    
    .feature-code {
        display: none;
    }
    
    .cta-actions {
        flex-direction: column;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}