/* ==========================================================================
   paraoligm.com - Maximalist Cultural Mosaic
   Palette: Obsidian #1a1a1a, Alabaster #f5f0e8, Saffron Gold #d4a012,
            Lapis Deep #1e3a5f, Carmine Rose #c0392b, Smoky Quartz #8c7e6a,
            Pearl Mist #e8e0d0, Bright Verdigris #2ecc87
   Fonts: Space Grotesk (500,700), DM Sans (400,500), Cormorant Garamond (300i)
   ========================================================================== */

/* --- CSS Custom Properties --- */
:root {
    --obsidian: #1a1a1a;
    --alabaster: #f5f0e8;
    --saffron: #d4a012;
    --lapis: #1e3a5f;
    --carmine: #c0392b;
    --smoky: #8c7e6a;
    --pearl: #e8e0d0;
    --verdigris: #2ecc87;
    --vein-x: 50%;
    --vein-y: 50%;
}

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

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

body {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.6vw, 1.15rem);
    line-height: 1.75;
    color: var(--obsidian);
    background: var(--obsidian);
    overflow-x: hidden;
}

/* --- Opening Overlay --- */
.opening-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--obsidian);
    z-index: 9999;
    pointer-events: none;
    clip-path: circle(0% at 50% 50%);
    transition: none;
}

.opening-overlay.expanding {
    clip-path: circle(150% at 50% 50%);
    transition: clip-path 1200ms ease-out;
}

.opening-overlay.done {
    display: none;
}

/* --- Hero Section --- */
.hero-section {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
    z-index: 1;
}

/* Marble Background */
.marble-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        linear-gradient(22deg, transparent 48%, rgba(140,126,106,0.12) 49%, rgba(140,126,106,0.08) 51%, transparent 52%),
        linear-gradient(67deg, transparent 46%, rgba(140,126,106,0.10) 47%, rgba(140,126,106,0.06) 49%, transparent 50%),
        linear-gradient(158deg, transparent 44%, rgba(140,126,106,0.14) 45%, rgba(140,126,106,0.07) 47%, transparent 48%),
        linear-gradient(135deg, #f5f0e8 0%, #e8e0d0 40%, #f5f0e8 60%, #e8e0d0 100%);
    background-position: var(--vein-x) var(--vein-y), var(--vein-x) var(--vein-y), var(--vein-x) var(--vein-y), 0 0;
    filter: url(#marble-noise);
    opacity: 0;
    transition: opacity 600ms ease;
    z-index: 0;
}

.marble-bg.visible {
    opacity: 1;
}

/* Islamic Geometric Pattern */
.geometric-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 800ms ease 400ms;
    z-index: 1;
    pointer-events: none;
    background-image:
        repeating-conic-gradient(
            from 0deg at 50% 50%,
            transparent 0deg 40deg,
            rgba(212,160,18,0.06) 40deg 50deg,
            transparent 50deg 90deg
        );
    background-size: 120px 120px;
    animation: patternPulse 4s ease-in-out infinite;
}

.geometric-pattern.visible {
    opacity: 0.08;
}

@keyframes patternPulse {
    0%, 100% { filter: blur(0px); }
    50% { filter: blur(2px); }
}

/* Geometric Band beneath hero title */
.geometric-band {
    position: absolute;
    top: calc(50% + clamp(3rem, 6vw, 5rem));
    left: 0;
    width: 100%;
    height: 60px;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

.geometric-band::before,
.geometric-band::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 100%;
}

.geometric-band::before {
    background: repeating-linear-gradient(
        45deg,
        transparent 0px,
        transparent 28px,
        rgba(212,160,18,0.15) 28px,
        rgba(212,160,18,0.15) 30px
    );
}

.geometric-band::after {
    background: repeating-linear-gradient(
        -45deg,
        transparent 0px,
        transparent 28px,
        rgba(212,160,18,0.15) 28px,
        rgba(212,160,18,0.15) 30px
    );
}

/* Hero Content */
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(3.5rem, 9vw, 8rem);
    letter-spacing: -0.02em;
    text-transform: uppercase;
    color: var(--obsidian);
    transform: scale(2);
    opacity: 0;
    transition: transform 1000ms cubic-bezier(0.16, 1, 0.3, 1), opacity 600ms ease;
}

.hero-title.revealed {
    transform: scale(1);
    opacity: 1;
}

.hero-tagline {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 300;
    font-style: italic;
    font-size: clamp(1.3rem, 3vw, 2.2rem);
    color: var(--saffron);
    margin-top: 0.5em;
    min-height: 1.5em;
}

.tagline-cursor {
    display: inline-block;
    animation: cursorBlink 600ms steps(1) infinite;
    color: var(--saffron);
}

@keyframes cursorBlink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

/* Diagonal Stripe Overlay (subtle woven texture) */
.diagonal-stripe-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 3;
    background: repeating-linear-gradient(
        45deg,
        transparent 0px,
        transparent 17px,
        rgba(212,160,18,0.06) 17px,
        rgba(212,160,18,0.06) 20px
    );
}

.stripe-dark {
    background: repeating-linear-gradient(
        45deg,
        transparent 0px,
        transparent 17px,
        rgba(245,240,232,0.04) 17px,
        rgba(245,240,232,0.04) 20px
    );
}

.stripe-light {
    background: repeating-linear-gradient(
        45deg,
        transparent 0px,
        transparent 17px,
        rgba(212,160,18,0.06) 17px,
        rgba(212,160,18,0.06) 20px
    );
}

/* --- Chevron Dividers --- */
.chevron-divider {
    position: relative;
    width: 100%;
    height: 60px;
    z-index: 2;
    overflow: hidden;
    background: var(--obsidian);
}

.chevron-divider svg {
    display: block;
    width: 100%;
    height: 100%;
}

.chevron-shape {
    fill: var(--saffron);
    opacity: 0;
    transform: scaleY(0);
    transform-origin: bottom center;
    transform-box: fill-box;
    transition: transform 300ms ease-out, opacity 300ms ease-out;
}

.chevron-shape:nth-child(even) {
    fill: var(--lapis);
}

.chevron-shape.animated {
    opacity: 1;
    transform: scaleY(1);
}

/* --- Diagonal Bands (Content Sections) --- */
.diagonal-band {
    position: relative;
    padding: clamp(3rem, 8vh, 6rem) clamp(2rem, 6vw, 5rem);
    overflow: hidden;
}

.band-dark {
    background: var(--obsidian);
    color: var(--alabaster);
}

.band-light {
    background: var(--alabaster);
    color: var(--obsidian);
}

.band-lapis {
    background: var(--lapis);
    color: var(--alabaster);
}

/* Odd bands tilt left-to-right */
.band-odd {
    clip-path: polygon(0 0, 100% 2%, 100% 100%, 0 98%);
}

/* Even bands tilt right-to-left */
.band-even {
    clip-path: polygon(0 2%, 100% 0, 100% 98%, 0 100%);
}

/* Dark section Islamic pattern watermark */
.band-dark::before,
.band-lapis::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.06;
    background-image:
        repeating-conic-gradient(
            from 0deg at 50% 50%,
            transparent 0deg 40deg,
            rgba(212,160,18,0.3) 40deg 50deg,
            transparent 50deg 90deg
        );
    background-size: 120px 120px;
}

/* Band Grid: 3-column layout */
.band-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    gap: clamp(1.5rem, 3vw, 3rem);
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* Flank columns */
.flank-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

/* Main content column */
.main-col {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* --- Typography --- */
.section-heading {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 3rem);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--saffron);
}

.heading-dark {
    color: var(--obsidian);
}

.body-text {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.6vw, 1.15rem);
    line-height: 1.75;
    max-width: 55ch;
}

.text-on-dark {
    color: var(--alabaster);
}

.text-on-light {
    color: var(--obsidian);
}

.pull-quote {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 300;
    font-style: italic;
    font-size: clamp(1.3rem, 3vw, 2.2rem);
    color: var(--saffron);
    padding: 1rem 0;
    border-left: 3px solid var(--saffron);
    padding-left: 1.5rem;
}

.scrollwork-left,
.scrollwork-right {
    color: var(--smoky);
    font-size: 1.2em;
}

/* --- Decorative Elements --- */

/* Rosettes: 6-petal geometric flowers */
.decorative-rosette {
    width: 80px;
    height: 80px;
    position: relative;
    border-radius: 50%;
}

.decorative-rosette::before,
.decorative-rosette::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--saffron);
}

.decorative-rosette::before {
    top: 0;
    left: 20px;
    box-shadow:
        -20px 15px 0 -1px transparent, -20px 15px 0 0 var(--saffron),
        20px 15px 0 -1px transparent, 20px 15px 0 0 var(--saffron);
}

.decorative-rosette::after {
    bottom: 0;
    left: 20px;
    box-shadow:
        -20px -15px 0 -1px transparent, -20px -15px 0 0 var(--saffron),
        20px -15px 0 -1px transparent, 20px -15px 0 0 var(--saffron);
}

.rosette-alt::before,
.rosette-alt::after {
    border-color: var(--smoky);
}

.rosette-alt::before {
    box-shadow:
        -20px 15px 0 -1px transparent, -20px 15px 0 0 var(--smoky),
        20px 15px 0 -1px transparent, 20px 15px 0 0 var(--smoky);
}

.rosette-alt::after {
    box-shadow:
        -20px -15px 0 -1px transparent, -20px -15px 0 0 var(--smoky),
        20px -15px 0 -1px transparent, 20px -15px 0 0 var(--smoky);
}

.rosette-lapis::before,
.rosette-lapis::after {
    border-color: var(--saffron);
}

.rosette-lapis::before {
    box-shadow:
        -20px 15px 0 -1px transparent, -20px 15px 0 0 var(--saffron),
        20px 15px 0 -1px transparent, 20px 15px 0 0 var(--saffron);
}

.rosette-lapis::after {
    box-shadow:
        -20px -15px 0 -1px transparent, -20px -15px 0 0 var(--saffron),
        20px -15px 0 -1px transparent, 20px -15px 0 0 var(--saffron);
}

/* Marble Inset */
.marble-inset {
    width: 100%;
    max-width: 200px;
    aspect-ratio: 3 / 4;
    border-radius: 4px;
    border: 2px solid var(--smoky);
    background:
        linear-gradient(22deg, transparent 48%, rgba(140,126,106,0.15) 49%, rgba(140,126,106,0.08) 51%, transparent 52%),
        linear-gradient(67deg, transparent 46%, rgba(140,126,106,0.12) 47%, rgba(140,126,106,0.06) 49%, transparent 50%),
        linear-gradient(135deg, #f5f0e8 0%, #e8e0d0 40%, #f5f0e8 60%, #e8e0d0 100%);
    box-shadow: inset 0 0 30px rgba(0,0,0,0.1);
}

.marble-inset-lapis {
    background:
        linear-gradient(22deg, transparent 48%, rgba(212,160,18,0.12) 49%, rgba(212,160,18,0.06) 51%, transparent 52%),
        linear-gradient(67deg, transparent 46%, rgba(212,160,18,0.10) 47%, rgba(212,160,18,0.05) 49%, transparent 50%),
        linear-gradient(135deg, #1e3a5f 0%, #15304f 40%, #1e3a5f 60%, #253d5a 100%);
    border-color: var(--saffron);
}

/* Geometric Border Pattern */
.geometric-border-pattern {
    width: 100%;
    max-width: 200px;
    height: 300px;
    border: 2px solid var(--smoky);
    position: relative;
    overflow: hidden;
    background:
        repeating-linear-gradient(
            0deg,
            transparent 0px,
            transparent 18px,
            rgba(140,126,106,0.15) 18px,
            rgba(140,126,106,0.15) 20px
        ),
        repeating-linear-gradient(
            90deg,
            transparent 0px,
            transparent 18px,
            rgba(140,126,106,0.15) 18px,
            rgba(140,126,106,0.15) 20px
        );
}

.geometric-border-pattern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        repeating-linear-gradient(
            45deg,
            transparent 0px,
            transparent 13px,
            rgba(212,160,18,0.12) 13px,
            rgba(212,160,18,0.12) 15px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent 0px,
            transparent 13px,
            rgba(212,160,18,0.12) 13px,
            rgba(212,160,18,0.12) 15px
        );
}

/* Knot Decoration */
.knot-decoration {
    width: 120px;
    height: 120px;
}

.interlocking-knot {
    width: 100%;
    height: 100%;
}

.interlocking-knot path {
    stroke-dasharray: 300;
    stroke-dashoffset: 300;
    transition: stroke-dashoffset 1500ms ease-out;
}

.knot-visible .interlocking-knot path {
    stroke-dashoffset: 0;
}

/* --- Blur-Focus Animation --- */
.blur-child {
    filter: blur(12px);
    opacity: 0.3;
    transition: filter 600ms ease-out, opacity 600ms ease-out;
}

.blur-child.focused {
    filter: blur(0px);
    opacity: 1;
}

/* Stagger delays */
.blur-child[data-delay="0"] { transition-delay: 0ms; }
.blur-child[data-delay="1"] { transition-delay: 150ms; }
.blur-child[data-delay="2"] { transition-delay: 300ms; }

/* --- Mosaic Footer --- */
.mosaic-section {
    position: relative;
    padding: clamp(3rem, 8vh, 6rem) clamp(2rem, 6vw, 5rem);
    background: var(--obsidian);
    z-index: 1;
}

.mosaic-heading {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--saffron);
}

.mosaic-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
    max-width: 800px;
    margin: 0 auto;
    background: var(--obsidian);
}

.mosaic-tile {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(0.7rem, 1.5vw, 1rem);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transform: rotateY(90deg);
    transition: transform 400ms ease-out;
    perspective: 600px;
    backface-visibility: hidden;
}

.mosaic-tile.revealed {
    transform: rotateY(0deg);
}

/* Tile Colors */
.tile-obsidian {
    background: var(--obsidian);
    color: var(--alabaster);
    border: 1px solid var(--smoky);
}

.tile-gold {
    background: var(--saffron);
    color: var(--obsidian);
}

.tile-lapis {
    background: var(--lapis);
    color: var(--alabaster);
}

.tile-alabaster {
    background: var(--alabaster);
    color: var(--obsidian);
}

.tile-carmine {
    background: var(--carmine);
    color: var(--alabaster);
}

.tile-pearl {
    background: var(--pearl);
    color: var(--obsidian);
}

.tile-smoky {
    background: var(--smoky);
    color: var(--alabaster);
}

.tile-verdigris {
    background: var(--verdigris);
    color: var(--obsidian);
}

/* --- Responsive (below 768px) --- */
@media (max-width: 768px) {
    .hero-section {
        clip-path: polygon(0 0, 100% 0, 100% 96%, 0 100%);
    }

    .band-odd {
        clip-path: polygon(0 0, 100% 1%, 100% 100%, 0 99%);
    }

    .band-even {
        clip-path: polygon(0 1%, 100% 0, 100% 99%, 0 100%);
    }

    .band-grid {
        grid-template-columns: 1fr;
    }

    .flank-col {
        display: none;
    }

    .chevron-divider {
        height: 40px;
    }

    .mosaic-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .geometric-band {
        display: none;
    }
}

/* --- Parallax Utility --- */
.band-dark,
.band-light,
.band-lapis {
    will-change: transform;
}