/* ============================================
   mosoon.xyz - Contradiction Maximalist
   Dual-grid | Neon-Monochrome | Serif-Sans
   ============================================ */

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

:root {
    --black: #1a1a1a;
    --white: #f5f5f5;
    --neon-magenta: #ff2e5c;
    --neon-cyan: #00d9ff;
    --deep-teal: #0a4c5c;
    --warm-sand: #d4a574;
    --gray: #8a8a8a;

    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Josefin Sans', 'Inter', sans-serif;
    --font-body: Georgia, 'Lora', serif;
    --font-mono: 'Space Mono', 'Courier New', monospace;
}

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

body {
    background: var(--black);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.7;
    overflow-x: hidden;
}

/* --- Section Base --- */
.section {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 4rem 2rem;
}

.section--dark {
    background: var(--black);
    color: var(--white);
}

.section--light {
    background: var(--white);
    color: var(--black);
}

.section--gray {
    background: var(--gray);
    color: var(--black);
}

.full-bleed {
    width: 100vw;
}

.constrained {
    width: 100vw;
}

.constrained > *:not(.diagonal-grid-overlay) {
    max-width: 45vw;
    margin-left: auto;
    margin-right: auto;
}

.sparse {
    min-height: 100vh;
}

.sparse > *:not(.diagonal-grid-overlay) {
    max-width: 85vw;
}

/* --- Diagonal Grid Overlay --- */
.diagonal-grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.06;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 60px,
        var(--gray) 60px,
        var(--gray) 61px
    ),
    repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 60px,
        var(--gray) 60px,
        var(--gray) 61px
    );
}

.section--light .diagonal-grid-overlay {
    opacity: 0.08;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 60px,
        var(--black) 60px,
        var(--black) 61px
    ),
    repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 60px,
        var(--black) 60px,
        var(--black) 61px
    );
}

/* --- Typography --- */
.heading {
    position: relative;
    z-index: 2;
}

.heading--serif {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: clamp(2.4rem, 6vw, 4rem);
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.heading--sans {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: clamp(2.4rem, 6vw, 4rem);
    letter-spacing: 0.12em;
    line-height: 1.1;
}

.heading--mega {
    font-size: clamp(3.2rem, 10vw, 7rem);
}

.heading--accent {
    color: var(--neon-cyan);
}

.heading--neon {
    color: var(--neon-magenta);
    text-shadow: 0 0 30px rgba(255, 46, 92, 0.4), 0 0 60px rgba(255, 46, 92, 0.2);
}

.heading--rtl {
    direction: rtl;
    unicode-bidi: bidi-override;
}

.body-text {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 18px;
    line-height: 1.7;
    position: relative;
    z-index: 2;
    max-width: 640px;
}

.body-text--inverted {
    color: var(--white);
}

.section--light .body-text {
    color: var(--black);
}

.mono-insert {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.1em;
    color: var(--neon-cyan);
}

.section--light .mono-insert {
    color: var(--neon-magenta);
}

.section--dark .mono-insert {
    color: var(--neon-cyan);
}

/* Caption alternating style */
.caption-alternating {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 2rem;
    position: relative;
    z-index: 2;
}

.caption-line {
    display: block;
}

.caption-line--small-caps {
    font-variant: small-caps;
    font-size: 0.75em;
    letter-spacing: 0.08em;
    color: var(--gray);
}

.caption-line--upper {
    text-transform: uppercase;
    font-size: 1.2em;
    letter-spacing: 0.15em;
    font-family: var(--font-sans);
    font-weight: 300;
}

.caption-style {
    font-size: clamp(1rem, 2vw, 1.5rem);
}

/* --- HERO SECTION --- */
#hero {
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    margin-top: 1.5rem;
    color: var(--gray);
}

.contradiction-arrows {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 3rem;
    gap: 0;
    position: relative;
}

.arrow {
    display: block;
}

.arrow--left {
    margin-left: -30px;
}

/* Geometric & Organic Shapes */
.geometric-shape {
    position: absolute;
    z-index: 1;
    opacity: 0.7;
}

.shape--circle {
    width: 200px;
    height: 200px;
    border: 3px solid var(--neon-cyan);
    border-radius: 50%;
    top: 15%;
    right: 10%;
}

.shape--triangle {
    width: 0;
    height: 0;
    border-left: 100px solid transparent;
    border-right: 100px solid transparent;
    border-bottom: 173px solid transparent;
    border-bottom-color: var(--neon-magenta);
    opacity: 0.15;
    bottom: 10%;
    left: 5%;
}

.shape--diamond {
    width: 120px;
    height: 120px;
    background: var(--neon-cyan);
    opacity: 0.1;
    transform: rotate(45deg);
    top: 20%;
    right: 15%;
}

.organic-shape {
    position: absolute;
    z-index: 1;
    opacity: 0.9;
}

.shape--blob {
    width: 300px;
    height: 300px;
    bottom: 5%;
    left: 5%;
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    border: 2px solid var(--warm-sand);
    opacity: 0.15;
    animation: blob-morph 12s ease-in-out infinite;
}

.shape--wave {
    width: 400px;
    height: 200px;
    bottom: 10%;
    left: 10%;
    border: 1px solid var(--warm-sand);
    border-radius: 50% 50% 30% 70% / 30% 70% 50% 50%;
    opacity: 0.12;
    animation: blob-morph 15s ease-in-out infinite reverse;
}

@keyframes blob-morph {
    0%, 100% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
    25% { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
    50% { border-radius: 50% 50% 40% 60% / 40% 50% 60% 50%; }
    75% { border-radius: 40% 70% 50% 30% / 60% 40% 50% 70%; }
}

/* --- MANIFESTO SECTION --- */
.manifesto-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    width: 100%;
    max-width: 90vw;
    position: relative;
    z-index: 2;
}

.manifesto-col {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Strata Cards */
.strata-card {
    padding: 2rem;
    position: relative;
    z-index: 2;
    transition: transform 0.6s ease, opacity 0.6s ease;
}

.strata-card--white-on-white {
    background: var(--white);
    color: var(--black);
    border: 1px solid rgba(138, 138, 138, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    /* Asymmetric borders */
    border-top-width: 8px;
    border-right-width: 2px;
    border-bottom-width: 12px;
    border-left-width: 1px;
    border-color: rgba(138, 138, 138, 0.15);
}

.strata-card--dark-on-light {
    background: var(--black);
    color: var(--white);
    border-top: 8px solid var(--neon-magenta);
    border-right: 2px solid var(--deep-teal);
    border-bottom: 12px solid var(--neon-cyan);
    border-left: 1px solid var(--gray);
}

.strata-card--black-on-black {
    background: rgba(26, 26, 26, 0.95);
    color: var(--white);
    border: 1px solid rgba(138, 138, 138, 0.08);
    box-shadow: 0 0 0 1px rgba(245, 245, 245, 0.03);
    border-top-width: 8px;
    border-right-width: 2px;
    border-bottom-width: 12px;
    border-left-width: 1px;
    border-top-color: rgba(0, 217, 255, 0.1);
    border-right-color: rgba(138, 138, 138, 0.05);
    border-bottom-color: rgba(255, 46, 92, 0.1);
    border-left-color: rgba(138, 138, 138, 0.03);
}

.strata-card--neon-accent {
    background: linear-gradient(135deg, rgba(255, 46, 92, 0.1), rgba(0, 217, 255, 0.1));
    border-top: 8px solid var(--neon-magenta);
    border-right: 2px solid var(--neon-cyan);
    border-bottom: 12px solid var(--warm-sand);
    border-left: 1px solid var(--deep-teal);
    padding: 2.5rem;
}

/* Tessellation & Random Patterns */
.tessellation-pattern,
.random-pattern {
    width: 100%;
    height: 80px;
    position: relative;
    z-index: 2;
    overflow: hidden;
}

.tessellation-pattern {
    background:
        linear-gradient(45deg, var(--neon-cyan) 25%, transparent 25%),
        linear-gradient(-45deg, var(--neon-cyan) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--neon-cyan) 75%),
        linear-gradient(-45deg, transparent 75%, var(--neon-cyan) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    opacity: 0.15;
}

.random-pattern {
    /* Will be populated by JS with random positioned dots */
    background: radial-gradient(circle at 15% 30%, var(--neon-magenta) 2px, transparent 2px),
                radial-gradient(circle at 45% 70%, var(--neon-magenta) 3px, transparent 3px),
                radial-gradient(circle at 72% 20%, var(--neon-magenta) 1.5px, transparent 1.5px),
                radial-gradient(circle at 88% 55%, var(--neon-magenta) 2.5px, transparent 2.5px),
                radial-gradient(circle at 30% 85%, var(--neon-magenta) 1px, transparent 1px),
                radial-gradient(circle at 60% 40%, var(--neon-magenta) 3px, transparent 3px),
                radial-gradient(circle at 10% 65%, var(--neon-magenta) 2px, transparent 2px),
                radial-gradient(circle at 80% 80%, var(--neon-magenta) 1.5px, transparent 1.5px);
    opacity: 0.3;
}

.asymmetric-border-element {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(
        to right,
        var(--neon-magenta) 0%,
        var(--neon-magenta) 30%,
        transparent 30%,
        transparent 50%,
        var(--neon-cyan) 50%,
        var(--neon-cyan) 70%,
        transparent 70%,
        transparent 85%,
        var(--warm-sand) 85%,
        var(--warm-sand) 100%
    );
    z-index: 3;
}

/* --- STRATA SECTION --- */
.strata-layers {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    width: 90%;
    max-width: 800px;
    position: relative;
    z-index: 2;
}

/* --- TYPOGRAPHY SHOWCASE SECTION --- */
.type-showcase {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    position: relative;
    z-index: 2;
    padding: 6rem 0;
}

.type-block {
    transition: transform 0.8s ease;
}

.type-block--rotated {
    transform: rotate(15deg);
}

.type-block--rotated:hover {
    transform: rotate(0deg);
}

.section--light .heading--mega {
    color: var(--black);
}

/* --- COLLISION SECTION --- */
#collision {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4rem;
    padding: 4rem;
}

.collision-canvas {
    position: relative;
    width: 400px;
    height: 400px;
    z-index: 2;
}

.geo-element {
    position: absolute;
    z-index: 2;
}

.geo-rect {
    width: 80px;
    height: 80px;
    border: 3px solid var(--neon-cyan);
    top: 20%;
    left: 15%;
    animation: spin-cw 20s linear infinite;
    opacity: 0.7;
}

.geo-circle {
    width: 100px;
    height: 100px;
    border: 2px solid var(--neon-magenta);
    border-radius: 50%;
    top: 50%;
    right: 20%;
    animation: spin-ccw 15s linear infinite;
    opacity: 0.7;
}

.geo-triangle {
    width: 0;
    height: 0;
    border-left: 40px solid transparent;
    border-right: 40px solid transparent;
    border-bottom: 70px solid rgba(212, 165, 116, 0.3);
    bottom: 15%;
    left: 40%;
    animation: spin-cw 25s linear infinite;
}

.organic-svg {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.organic-path {
    animation: organic-drift 10s ease-in-out infinite;
}

.organic-path--2 {
    animation: organic-drift 14s ease-in-out infinite reverse;
}

@keyframes spin-cw {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes spin-ccw {
    from { transform: rotate(360deg); }
    to { transform: rotate(0deg); }
}

@keyframes organic-drift {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(10px, -15px) scale(1.03); }
    66% { transform: translate(-8px, 12px) scale(0.97); }
}

.collision-text {
    position: relative;
    z-index: 2;
    max-width: 500px;
}

.collision-text .heading {
    margin-bottom: 0.5rem;
}

.collision-text .body-text {
    margin-top: 1.5rem;
}

/* --- PALETTE SECTION --- */
.palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1.5rem;
    width: 100%;
    max-width: 90vw;
    position: relative;
    z-index: 2;
    margin-bottom: 2rem;
}

.color-swatch {
    aspect-ratio: 1;
    background: var(--swatch-color);
    color: var(--swatch-text);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    border-top: 8px solid rgba(0, 0, 0, 0.2);
    border-right: 2px solid rgba(0, 0, 0, 0.1);
    border-bottom: 12px solid rgba(0, 0, 0, 0.3);
    border-left: 1px solid rgba(0, 0, 0, 0.05);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.color-swatch:hover {
    transform: scale(1.15);
    opacity: 0.7;
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.3);
}

.swatch-label {
    font-size: 0.8rem;
    letter-spacing: 0.05em;
}

.swatch-name {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.palette-philosophy {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 600px;
}

/* --- DIRECTION SECTION --- */
.direction-field {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 2;
    margin-bottom: 3rem;
}

.direction-arrow-pair {
    position: relative;
    width: 120px;
    height: 60px;
    cursor: pointer;
}

.dir-arrow {
    position: absolute;
    top: 0;
    left: 0;
    transition: transform 0.5s ease;
}

.direction-arrow-pair:hover .dir-arrow--forward {
    transform: scaleX(-1);
}

.direction-arrow-pair:hover .dir-arrow--backward {
    transform: scaleX(-1);
}

.direction-text {
    position: relative;
    z-index: 2;
    text-align: center;
}

.direction-text .heading {
    margin-bottom: 0.5rem;
}

.direction-text .body-text {
    margin-top: 1.5rem;
    max-width: 500px;
}

/* --- OPACITY SECTION --- */
.opacity-strata {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    position: relative;
    z-index: 2;
    margin-bottom: 3rem;
}

.opacity-layer {
    opacity: var(--layer-opacity);
    transition: opacity 0.3s steps(4);
    padding: 1rem 3rem;
}

.opacity-layer .heading {
    font-size: clamp(2rem, 5vw, 4rem);
}

.section--light .opacity-layer .heading--serif {
    color: var(--black);
}

.section--light .opacity-layer .heading--sans {
    color: var(--black);
}

.opacity-note {
    text-align: center;
    position: relative;
    z-index: 2;
}

/* --- CLOSING SECTION --- */
.closing-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.closing-content .heading {
    margin-bottom: 0.5rem;
}

.closing-border-element {
    width: 200px;
    height: 4px;
    margin: 2rem auto;
    background: linear-gradient(to right, var(--neon-magenta), var(--neon-cyan));
}

.closing-body {
    margin: 0 auto;
    text-align: center;
}

/* --- ANIMATIONS --- */

/* Opacity flicker */
@keyframes opacity-flicker {
    0% { opacity: 1; }
    15% { opacity: 1; }
    16% { opacity: 0.4; }
    40% { opacity: 0.4; }
    41% { opacity: 0; }
    52% { opacity: 0; }
    53% { opacity: 1; }
    100% { opacity: 1; }
}

/* Scale contradiction: grow while fading */
@keyframes scale-fade {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.15); opacity: 0.7; }
    100% { transform: scale(1); opacity: 1; }
}

/* Slide from left */
@keyframes slide-in-left {
    from { transform: translateX(-80px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Slide from right */
@keyframes slide-in-right {
    from { transform: translateX(80px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Active animation classes applied by JS */
.animate-slide-left {
    animation: slide-in-left 1s ease forwards;
}

.animate-slide-right {
    animation: slide-in-right 1s ease forwards;
}

.animate-scale-fade {
    animation: scale-fade 4s ease-in-out infinite;
}

.animate-flicker {
    animation: opacity-flicker 2.35s steps(1) infinite;
}

/* Color inversion on scroll (applied by JS) */
.section--inverted.section--dark {
    background: var(--white);
    color: var(--black);
}

.section--inverted.section--dark .body-text--inverted {
    color: var(--black);
}

.section--inverted.section--dark .heading--accent {
    color: var(--neon-magenta);
}

.section--inverted.section--dark .mono-insert {
    color: var(--neon-magenta);
}

/* Hover reversal for spinning elements */
.geo-rect:hover {
    animation-direction: reverse;
}

.geo-circle:hover {
    animation-direction: reverse;
}

.geo-triangle:hover {
    animation-direction: reverse;
}

/* --- RESPONSIVE (Jarring snaps, not smooth) --- */
@media (max-width: 900px) {
    .manifesto-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .constrained > *:not(.diagonal-grid-overlay) {
        max-width: 90vw;
    }

    #collision {
        flex-direction: column;
        align-items: center;
    }

    .collision-canvas {
        width: 300px;
        height: 300px;
    }

    .palette-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
}

@media (max-width: 600px) {
    .section {
        padding: 3rem 1rem;
    }

    .heading--mega {
        font-size: clamp(2rem, 8vw, 4rem);
    }

    .collision-canvas {
        width: 250px;
        height: 250px;
    }

    .manifesto-grid {
        gap: 1.5rem;
    }

    .strata-layers {
        width: 95%;
    }

    .palette-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.8rem;
    }
}