/* ==========================================================================
   CSS Variables & Theme (Ethereal Glass - Awwwards Tier)
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    /* Colors */
    --bg-oled: #050505;
    --bg-card-shell: rgba(255, 255, 255, 0.03);
    --bg-card-core: #0a0a0a;
    --bg-glass: rgba(5, 5, 5, 0.6);
    --border-hairline: rgba(255, 255, 255, 0.06);
    --border-highlight: rgba(255, 255, 255, 0.15);
    
    --text-main: #F8FAFC;
    --text-muted: #A1A1AA;
    --text-tech: #71717A;

    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    /* Layout & Spacing */
    --container-width: 1280px;
    --radius-shell: 2rem;
    --radius-core: calc(2rem - 0.5rem);
    --radius-pill: 9999px;
    
    /* Transitions (Fluid Dynamics) */
    --ease-spring: cubic-bezier(0.32, 0.72, 0, 1);
    --transition-fast: 0.3s var(--ease-spring);
    --transition-base: 0.5s var(--ease-spring);
    --transition-slow: 0.8s var(--ease-spring);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-oled);
}

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

/* Ethereal Glow Background */
.bg-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -3;
    background: var(--bg-oled);
}

.orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -2;
    opacity: 0.5;
    animation: float 20s infinite alternate ease-in-out;
    pointer-events: none;
}
.orb-1 {
    top: -10%; left: -10%; width: 40vw; height: 40vw;
    background: radial-gradient(circle, rgba(6,182,212,0.3) 0%, transparent 70%);
}
.orb-2 {
    bottom: -10%; right: -5%; width: 50vw; height: 50vw;
    background: radial-gradient(circle, rgba(249,115,22,0.2) 0%, transparent 70%);
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 10%) scale(1.2); }
}

.noise-overlay {
    position: fixed;
    inset: 0;
    z-index: 50;
    opacity: 0.03;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.eyebrow {
    display: inline-block;
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-hairline);
    font-family: var(--font-body);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: #06b6d4; /* Add a touch of cyan highlight */
    margin-bottom: 24px;
    box-shadow: 0 0 15px rgba(6,182,212,0.1);
}

.text-gradient {
    background: linear-gradient(135deg, #F8FAFC 20%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.text-gradient-orange {
    background: linear-gradient(135deg, #f97316 0%, #F8FAFC 80%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==========================================================================
   Architecture: Double-Bezel (Doppelrand)
   ========================================================================== */
.card-shell {
    position: relative;
    background: var(--bg-card-shell);
    border: 1px solid var(--border-hairline);
    padding: 8px;
    border-radius: var(--radius-shell);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    overflow: hidden;
}

.card-shell::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255,255,255,0.06), transparent 40%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
    z-index: 1;
}

.card-shell:hover::before {
    opacity: 1;
}

.card-core {
    position: relative;
    z-index: 2;
    background: var(--bg-card-core);
    border-radius: var(--radius-core);
    box-shadow: inset 0 1px 1px var(--border-highlight);
    overflow: hidden;
    height: 100%;
}

/* ==========================================================================
   Architecture: Island Buttons
   ========================================================================== */
.btn-group {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 6px 6px 24px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-hairline);
    border-radius: var(--radius-pill);
    color: var(--text-main);
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-base);
    cursor: pointer;
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.btn-group:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(0.98);
}

.btn-group .btn-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 16px;
    transition: var(--transition-fast);
}

.btn-group:hover .btn-icon {
    transform: translate(2px, -1px) scale(1.05);
    background: var(--text-main);
    color: var(--bg-oled);
}

.btn-icon svg {
    width: 16px;
    height: 16px;
}

.btn-secondary {
    display: inline-flex;
    padding: 14px 24px;
    border-radius: var(--radius-pill);
    color: var(--text-muted);
    text-decoration: none;
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.btn-secondary:hover {
    color: var(--text-main);
}

/* ==========================================================================
   Fluid Island Nav
   ========================================================================== */
.island-nav {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card-shell);
    backdrop-filter: blur(32px);
    -webkit-backdrop-filter: blur(32px);
    border: 1px solid var(--border-hairline);
    border-radius: var(--radius-pill);
    padding: 8px 12px 8px 24px;
    display: flex;
    align-items: center;
    gap: 32px;
    z-index: 100;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5), inset 0 1px 1px var(--border-highlight);
    width: max-content;
}

.nav-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.03em;
    color: var(--text-main);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

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

/* ==========================================================================
   Sections
   ========================================================================== */
.section {
    padding: 160px 0; /* Macro-whitespace */
    position: relative;
}

.hero {
    min-height: 100dvh;
    display: flex;
    align-items: center;
    padding-top: 120px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 32px;
    color: var(--text-main);
}

.hero-title span {
    color: var(--text-muted);
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 48px;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Code Window - Doppelrand applied */
.code-shell {
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform var(--transition-slow);
}

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

.code-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-hairline);
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.02);
}

.code-header .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-highlight);
}

.code-title {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    color: var(--text-tech);
    margin-left: 8px;
}

.code-body {
    padding: 32px 24px;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.code-body .highlight {
    color: #F8FAFC;
}

.blinking-cursor {
    animation: blink 1s step-end infinite;
}

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

/* HUD Section */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 16px;
}

.hud-shell {
    max-width: 1000px;
    margin: 0 auto;
}

.hud-core {
    position: relative;
    aspect-ratio: 16/9;
    background: #000;
}

/* Presentation Cascade */
.cascade-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 24px;
}

.cascade-item-main {
    grid-column: span 8;
}

.cascade-item-side {
    grid-column: span 4;
}

.slide-content-pad {
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}

.slide-content-pad h3 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.slide-content-pad p {
    color: var(--text-muted);
    margin-bottom: 32px;
}

/* ==========================================================================
   Motion Choreography (Scroll Reveals)
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    filter: blur(8px);
    transition: all 1s var(--ease-spring);
    will-change: transform, opacity;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}

.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }

/* ==========================================================================
   Mobile Collapse
   ========================================================================== */
@media (max-width: 1024px) {
    .cascade-item-main,
    .cascade-item-side {
        grid-column: span 12;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: 100dvh;
        padding-top: 140px;
    }
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .hero-title {
        font-size: 3rem;
    }
    .island-nav {
        width: calc(100% - 32px);
        justify-content: space-between;
    }
    .nav-links {
        display: none; /* Can implement hamburger if needed */
    }
    .section {
        padding: 80px 0;
    }
    .slide-content-pad {
        padding: 32px;
    }
}

/* ==========================================================================
   Clean Editorial Pitch Deck Theme (Presentation Mode)
   60-30-10 Light Palette & Invariant Grid Templates
   ========================================================================== */
body.presentation-mode {
    --pres-bg: #F8FAFC;
    --pres-surface: #FFFFFF;
    --pres-border: #E2E8F0;
    --pres-border-strong: #CBD5E1;
    --pres-text-main: #0F172A;
    --pres-text-sub: #334155;
    --pres-text-muted: #64748B;
    --pres-accent-blue: #0284C7;
    --pres-accent-orange: #EA580C;
    --pres-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.05), 0 4px 12px -2px rgba(15, 23, 42, 0.03);

    overflow: hidden;
    background-color: var(--pres-bg);
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body);
    color: var(--pres-text-main);
}

.pres-card {
    background: var(--pres-surface);
    border: 1px solid var(--pres-border);
    border-radius: 1.25rem;
    padding: 32px;
    box-shadow: var(--pres-shadow);
    transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1), border-color 0.3s;
}

.pres-card:hover {
    border-color: var(--pres-border-strong);
    transform: translateY(-2px);
}

.pres-idx {
    font-family: 'Space Grotesk', monospace;
    font-variant-numeric: tabular-nums;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--pres-accent-blue);
    letter-spacing: 0.08em;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.eyebrow-editorial {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 999px;
    background: #F0F9FF;
    border: 1px solid #BAE6FD;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--pres-accent-blue);
    margin-bottom: 12px;
}

.eyebrow-warn {
    background: #FFF7ED;
    border-color: #FED7AA;
    color: var(--pres-accent-orange);
}

.pres-grid-2 {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: stretch;
}

.pres-grid-4 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.pres-pipeline-box {
    background: #F1F5F9;
    border: 1px solid var(--pres-border-strong);
    border-radius: 1rem;
    padding: 24px;
    font-family: 'Space Grotesk', monospace;
    color: var(--pres-text-main);
}