/* soning.stream - Art Deco Reasoning Theater */
/* ==========================================
   CSS Custom Properties
   ========================================== */
:root {
    --bg-deep: #1a0a0f;
    --surface-primary: #6b1d3a;
    --surface-secondary: #4a1528;
    --accent-gold: #c9a84c;
    --accent-gold-bright: #e8c86a;
    --text-primary: #f5f0e8;
    --text-secondary: #c4b8a4;
    --glass-tint: rgba(107, 29, 58, 0.35);
    --highlight: #d4943a;
    --divider: #8a4a62;

    --diagonal-offset: 8vh;
    --spring-ease: cubic-bezier(0.34, 1.56, 0.64, 1);

    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Cormorant Garamond', 'Times New Roman', serif;
    --font-accent: 'Josefin Sans', 'Trebuchet MS', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background: var(--bg-deep);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1.15rem;
    line-height: 1.85;
    overflow-x: hidden;
}

/* ==========================================
   Elevator Navigation
   ========================================== */
#elevator-nav {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 60px;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateX(-60px);
    opacity: 0;
    transition: transform 0.8s var(--spring-ease), opacity 0.6s ease;
}

#elevator-nav.visible {
    transform: translateX(0);
    opacity: 1;
}

.elevator-track {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    padding: 20px 0;
    background: linear-gradient(180deg, transparent, rgba(74, 21, 40, 0.6) 15%, rgba(74, 21, 40, 0.6) 85%, transparent);
    border-right: 1px solid rgba(201, 168, 76, 0.25);
}

.elevator-track::before {
    content: '';
    position: absolute;
    top: 20px;
    bottom: 20px;
    left: 50%;
    width: 2px;
    background: linear-gradient(180deg, transparent, var(--accent-gold) 20%, var(--accent-gold) 80%, transparent);
    opacity: 0.2;
    transform: translateX(-50%);
    z-index: -1;
}

.elevator-indicator {
    position: absolute;
    width: 40px;
    height: 40px;
    border: 2px solid var(--accent-gold);
    border-radius: 2px;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    transition: top 0.6s var(--spring-ease);
    box-shadow: 0 0 12px rgba(201, 168, 76, 0.3), inset 0 0 8px rgba(201, 168, 76, 0.1);
    pointer-events: none;
}

.elevator-indicator.transitioning {
    box-shadow: 0 0 20px rgba(201, 168, 76, 0.6), inset 0 0 12px rgba(201, 168, 76, 0.2);
}

.floor-btn {
    position: relative;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid rgba(201, 168, 76, 0.2);
    border-radius: 2px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.3s ease;
    z-index: 1;
}

.floor-btn:hover {
    border-color: rgba(201, 168, 76, 0.5);
}

.floor-number {
    font-family: var(--font-accent);
    font-weight: 300;
    font-size: 0.7rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}

.floor-btn.active .floor-number {
    color: var(--accent-gold);
}

/* ==========================================
   Diagonal Sections
   ========================================== */
.diagonal-section {
    position: relative;
    min-height: 100vh;
    padding: 12vh 80px 12vh 90px;
    overflow: hidden;
}

.section-hero {
    background: var(--bg-deep);
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--diagonal-offset)), 0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
}

.section-wavelength-1 {
    background: var(--surface-secondary);
    clip-path: polygon(0 0, 100% var(--diagonal-offset), 100% 100%, 0 calc(100% - var(--diagonal-offset)));
    margin-top: calc(var(--diagonal-offset) * -1);
    z-index: 4;
}

.section-wavelength-2 {
    background: var(--bg-deep);
    clip-path: polygon(0 var(--diagonal-offset), 100% 0, 100% calc(100% - var(--diagonal-offset)), 0 100%);
    margin-top: calc(var(--diagonal-offset) * -1);
    z-index: 3;
}

.section-wavelength-3 {
    background: var(--surface-secondary);
    clip-path: polygon(0 0, 100% var(--diagonal-offset), 100% 100%, 0 calc(100% - var(--diagonal-offset)));
    margin-top: calc(var(--diagonal-offset) * -1);
    z-index: 2;
}

.section-finale {
    background: var(--surface-primary);
    clip-path: polygon(0 var(--diagonal-offset), 100% 0, 100% 100%, 0 100%);
    margin-top: calc(var(--diagonal-offset) * -1);
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.section-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* ==========================================
   Sunburst Backgrounds
   ========================================== */
.sunburst-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120vmax;
    height: 120vmax;
    transform: translate(-50%, -50%);
    background: conic-gradient(
        from 0deg,
        transparent 0deg,
        rgba(201, 168, 76, 0.06) 5deg,
        transparent 10deg,
        transparent 20deg,
        rgba(201, 168, 76, 0.06) 25deg,
        transparent 30deg
    );
    animation: sunburstRotate 120s linear infinite;
    will-change: transform;
    pointer-events: none;
    z-index: 0;
}

.sunburst-finale {
    background: conic-gradient(
        from 0deg,
        transparent 0deg,
        rgba(201, 168, 76, 0.04) 5deg,
        transparent 10deg,
        transparent 15deg,
        rgba(212, 148, 58, 0.04) 20deg,
        transparent 25deg,
        transparent 30deg
    );
}

@keyframes sunburstRotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ==========================================
   Chevron Borders
   ========================================== */
.chevron-border {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: repeating-linear-gradient(
        90deg,
        var(--accent-gold) 0px,
        var(--accent-gold) 8px,
        transparent 8px,
        transparent 16px
    );
    opacity: 0.25;
    z-index: 10;
}

/* ==========================================
   Fan Motifs
   ========================================== */
.fan-motif {
    position: absolute;
    width: 200px;
    height: 100px;
    border-radius: 100px 100px 0 0;
    overflow: hidden;
    opacity: 0.08;
    z-index: 1;
}

.fan-motif::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-conic-gradient(
        from 0deg at 50% 100%,
        var(--accent-gold) 0deg,
        transparent 3deg,
        transparent 12deg,
        var(--accent-gold) 15deg
    );
}

.fan-left {
    left: 5%;
    bottom: 15%;
}

.fan-right {
    right: 5%;
    bottom: 15%;
    transform: scaleX(-1);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero-frame {
    position: relative;
    text-align: center;
    padding: 60px 80px;
    border: 2px solid rgba(201, 168, 76, 0.3);
    max-width: 800px;
    margin: 0 auto;
}

.hero-frame::after {
    content: '';
    position: absolute;
    inset: 8px;
    border: 1px solid rgba(201, 168, 76, 0.15);
    pointer-events: none;
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: clamp(2.8rem, 7vw, 6rem);
    letter-spacing: 0.04em;
    font-variant: small-caps;
    color: var(--accent-gold);
    text-shadow: 0 0 40px rgba(201, 168, 76, 0.2);
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-family: var(--font-accent);
    font-weight: 300;
    font-size: 1rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

/* ==========================================
   Stepped Corners
   ========================================== */
.stepped-corner {
    position: absolute;
    width: 30px;
    height: 30px;
    pointer-events: none;
}

.stepped-corner.top-left {
    top: -1px;
    left: -1px;
    border-top: 2px solid var(--accent-gold);
    border-left: 2px solid var(--accent-gold);
    box-shadow:
        6px 6px 0 -1px transparent,
        6px 6px 0 0 rgba(201, 168, 76, 0.4),
        12px 12px 0 -1px transparent,
        12px 12px 0 0 rgba(201, 168, 76, 0.2);
}

.stepped-corner.bottom-right {
    bottom: -1px;
    right: -1px;
    border-bottom: 2px solid var(--accent-gold);
    border-right: 2px solid var(--accent-gold);
    box-shadow:
        -6px -6px 0 -1px transparent,
        -6px -6px 0 0 rgba(201, 168, 76, 0.4),
        -12px -12px 0 -1px transparent,
        -12px -12px 0 0 rgba(201, 168, 76, 0.2);
}

/* ==========================================
   Filigree Dividers
   ========================================== */
.filigree-divider {
    position: relative;
    height: 1px;
    margin: 20px 0;
    background: linear-gradient(90deg, transparent, var(--accent-gold) 20%, var(--accent-gold) 80%, transparent);
    opacity: 0.5;
    transform: scaleX(0);
    transition: transform 0.8s var(--spring-ease);
    transform-origin: center;
}

.filigree-divider.animate-in {
    transform: scaleX(1);
}

.filigree-diamond {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 8px;
    height: 8px;
    background: var(--accent-gold);
    transform: translate(-50%, -50%) rotate(45deg);
}

/* ==========================================
   Two-Column Layout
   ========================================== */
.two-column {
    display: grid;
    grid-template-columns: 55% 45%;
    gap: 40px;
    align-items: start;
    padding-top: 6vh;
}

.two-column.reverse {
    grid-template-columns: 45% 55%;
}

.two-column.reverse .column-main {
    order: 2;
}

.two-column.reverse .column-aside {
    order: 1;
}

/* ==========================================
   Glass Cards
   ========================================== */
.glass-card {
    position: relative;
    background: rgba(107, 29, 58, 0.25);
    backdrop-filter: blur(16px) saturate(1.2);
    -webkit-backdrop-filter: blur(16px) saturate(1.2);
    border: 1px solid rgba(201, 168, 76, 0.3);
    border-radius: 2px;
    padding: 40px 36px;
    box-shadow: inset 0 0 0 2px rgba(201, 168, 76, 0.12);
    opacity: 0;
    transform: translate(-40px, 40px);
    transition: opacity 0.8s ease, transform 0.8s var(--spring-ease);
}

.glass-card.animate-in {
    opacity: 1;
    transform: translate(0, 0) rotate(var(--card-rotation, 0deg));
}

.glass-card.rotate-neg {
    --card-rotation: -2deg;
}

.glass-card.rotate-pos {
    --card-rotation: 2deg;
}

.section-wavelength-2 .glass-card,
.section-wavelength-2 .glass-card.rotate-neg {
    transform: translate(40px, 40px);
}

.section-wavelength-2 .glass-card.animate-in {
    opacity: 1;
    transform: translate(0, 0) rotate(var(--card-rotation, 0deg));
}

/* ==========================================
   Typography
   ========================================== */
.section-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 3rem);
    letter-spacing: 0.04em;
    font-variant: small-caps;
    color: var(--accent-gold-bright);
    line-height: 1.2;
    margin-bottom: 4px;
}

.card-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.04em;
    font-variant: small-caps;
    color: var(--accent-gold-bright);
    margin-bottom: 12px;
    line-height: 1.3;
}

.body-text {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 1.15rem;
    line-height: 1.85;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.body-text:last-child {
    margin-bottom: 0;
}

.accent-label {
    font-family: var(--font-accent);
    font-weight: 300;
    font-size: 0.75rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 8px;
}

/* ==========================================
   Finale Section
   ========================================== */
.finale-frame {
    position: relative;
    text-align: center;
    padding: 60px 80px;
    border: 2px solid rgba(201, 168, 76, 0.3);
    max-width: 700px;
    margin: 0 auto;
}

.finale-frame::after {
    content: '';
    position: absolute;
    inset: 8px;
    border: 1px solid rgba(201, 168, 76, 0.15);
    pointer-events: none;
}

.finale-heading {
    font-size: clamp(2.2rem, 5vw, 4rem);
    text-align: center;
    color: var(--accent-gold);
}

.finale-text {
    text-align: center;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================
   Brass Dial
   ========================================== */
.brass-dial {
    margin-top: 40px;
    display: flex;
    justify-content: center;
}

.dial-face {
    position: relative;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 2px solid var(--accent-gold);
    box-shadow: 0 0 20px rgba(201, 168, 76, 0.15), inset 0 0 20px rgba(26, 10, 15, 0.5);
}

.dial-tick {
    position: absolute;
    top: 8px;
    left: 50%;
    width: 1px;
    height: 12px;
    background: var(--accent-gold);
    transform-origin: 50% 52px;
    transform: translateX(-50%) rotate(var(--tick-angle));
    opacity: 0.6;
}

.dial-needle {
    position: absolute;
    top: 20%;
    left: 50%;
    width: 2px;
    height: 35%;
    background: linear-gradient(to bottom, var(--accent-gold-bright), var(--highlight));
    transform-origin: 50% 100%;
    transform: translateX(-50%) rotate(0deg);
    animation: dialSweep 8s ease-in-out infinite;
    border-radius: 1px;
    box-shadow: 0 0 6px rgba(201, 168, 76, 0.4);
}

.dial-needle::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-gold);
    transform: translateX(-50%);
    box-shadow: 0 0 8px rgba(201, 168, 76, 0.3);
}

@keyframes dialSweep {
    0%, 100% { transform: translateX(-50%) rotate(-60deg); }
    50% { transform: translateX(-50%) rotate(60deg); }
}

/* ==========================================
   Scroll Animations
   ========================================== */
.parallax-element {
    will-change: transform;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 900px) {
    .diagonal-section {
        padding: 10vh 30px 10vh 30px;
    }

    #elevator-nav {
        width: 50px;
    }

    .two-column,
    .two-column.reverse {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .two-column.reverse .column-main {
        order: 1;
    }

    .two-column.reverse .column-aside {
        order: 2;
    }

    .hero-frame,
    .finale-frame {
        padding: 40px 30px;
    }

    .glass-card {
        padding: 30px 24px;
    }

    .fan-motif {
        display: none;
    }
}

@media (max-width: 600px) {
    :root {
        --diagonal-offset: 4vh;
    }

    .diagonal-section {
        padding: 8vh 20px;
    }

    #elevator-nav {
        display: none;
    }

    .hero-frame,
    .finale-frame {
        padding: 30px 20px;
    }

    .glass-card {
        padding: 24px 18px;
    }

    .brass-dial {
        margin-top: 24px;
    }

    .dial-face {
        width: 90px;
        height: 90px;
    }

    .dial-tick {
        transform-origin: 50% 37px;
    }
}