/* sora.day — urban coastal minimalism */

:root {
    --deep-navy: #2c4a5e;
    --warm-sand: #d4c5b2;
    --terracotta: #c4644a;
    --coastal-blue: #5b8fa8;
    --concrete-grey: #8a8e8f;
    --warm-white: #faf8f4;
    --dark-ink: #1b2d3a;
    --paper: #f0ece6;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Karla', sans-serif;
    background-color: var(--paper);
    color: var(--dark-ink);
    overflow-x: hidden;
    position: relative;
}

/* Film 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 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-color: var(--paper);
}

.hero-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.hero-title {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: clamp(2.8rem, 7vw, 6.5rem);
    line-height: 1.1;
    letter-spacing: -0.01em;
    color: var(--dark-ink);
}

.hero-subtitle {
    font-family: 'Azeret Mono', monospace;
    font-size: clamp(0.7rem, 1.2vw, 0.85rem);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--concrete-grey);
}

.hero-motif {
    width: clamp(200px, 50vw, 400px);
    margin-top: 1rem;
}

.wave-circuit {
    width: 100%;
    height: auto;
}

.scroll-hint {
    font-family: 'Azeret Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--concrete-grey);
    margin-top: 2rem;
    opacity: 0.6;
    animation: pulse-hint 2s ease-in-out infinite;
}

@keyframes pulse-hint {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* Grid Section */
.grid-section {
    padding: 4rem 2rem 8rem;
    max-width: 1200px;
    margin: 0 auto;
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
    grid-auto-flow: dense;
}

/* Modules */
.module {
    background: var(--warm-white);
    border: 1px solid var(--warm-sand);
    padding: 1.5rem;
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.module.revealed {
    opacity: 1;
    transform: translateY(0);
}

.module-2x1 {
    grid-column: span 2;
}

.module-1x2 {
    grid-row: span 2;
}

.module-2x2 {
    grid-column: span 2;
    grid-row: span 2;
}

.module-accent {
    background: var(--deep-navy);
    border-color: var(--deep-navy);
}

.module-code {
    background: var(--dark-ink);
    border-color: var(--dark-ink);
    color: var(--paper);
}

.module-tag {
    font-family: 'Azeret Mono', monospace;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--concrete-grey);
    display: block;
    margin-bottom: 0.75rem;
}

.module-code .module-tag {
    color: var(--coastal-blue);
}

.module-title {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    line-height: 1.1;
    letter-spacing: -0.01em;
    color: var(--dark-ink);
    margin-bottom: 0.75rem;
}

.module-accent .module-title {
    color: var(--warm-white);
}

.module-code .module-title {
    color: var(--paper);
}

.module-body {
    font-family: 'Karla', sans-serif;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--deep-navy);
    margin-bottom: 0.75rem;
}

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

.module-code .module-body {
    color: var(--warm-sand);
}

.module-mono {
    font-family: 'Azeret Mono', monospace;
    font-size: 0.75rem;
    line-height: 1.7;
    color: var(--coastal-blue);
    white-space: pre;
}

.module-svg {
    width: 100%;
    height: auto;
    display: block;
}

.module-wave-svg {
    width: 100%;
    height: auto;
    margin-bottom: 1rem;
}

.module-coord {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 0.5rem;
}

.coord-label {
    font-family: 'Azeret Mono', monospace;
    font-size: 1.1rem;
    color: var(--warm-white);
    letter-spacing: 0.02em;
}

.coord-sub {
    font-family: 'Karla', sans-serif;
    font-size: 0.8rem;
    color: var(--coastal-blue);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 0.5rem;
}

.module-list {
    list-style: none;
    padding: 0;
}

.module-list li {
    font-family: 'Karla', sans-serif;
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--deep-navy);
    padding-left: 1rem;
    position: relative;
}

.module-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--terracotta);
}

.texture-bar {
    height: 4px;
    background: linear-gradient(90deg, var(--terracotta) 0%, var(--coastal-blue) 50%, var(--warm-sand) 100%);
    margin-top: 1.5rem;
    border-radius: 2px;
}

/* Module hover micro-interaction */
.module:hover {
    border-color: var(--coastal-blue);
    transition: border-color 0.3s ease;
}

.module-accent:hover,
.module-code:hover {
    border-color: var(--terracotta);
}

/* Footer */
.site-footer {
    padding: 3rem 2rem;
    border-top: 1px solid var(--warm-sand);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-mark {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--dark-ink);
}

.footer-time {
    font-family: 'Azeret Mono', monospace;
    font-size: 0.7rem;
    color: var(--concrete-grey);
    letter-spacing: 0.05em;
}

/* Responsive */
@media (max-width: 600px) {
    .module-2x1,
    .module-2x2 {
        grid-column: span 1;
    }

    .module-2x2 {
        grid-row: span 1;
    }

    .grid-section {
        padding: 2rem 1rem 4rem;
    }
}