/* ============================================================
   chloe.cx - Warm Brutalist Game Engine
   ============================================================ */

:root {
    --deep-base: #1e1b18;
    --panel-base: #2a2520;
    --border: #3a3632;
    --rule: #4a4540;
    --body-text: #c4b89a;
    --amber: #e8c87a;
    --copper: #e87a4a;
    --phosphor: #7acea0;
    --indigo: #4a7ace;
    --code-bg: #151210;

    --font-display: 'Share Tech Mono', monospace;
    --font-body: 'IBM Plex Mono', monospace;
    --font-code: 'Fira Code', monospace;
    --font-accent: 'Orbitron', sans-serif;

    --gutter: 24px;
    --margin: 16px;
}

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

/* ---- Grain Overlay ---- */
body::after {
    content: '';
    position: fixed;
    top: -2px;
    left: -2px;
    width: calc(100% + 4px);
    height: calc(100% + 4px);
    pointer-events: none;
    z-index: 9999;
    opacity: 0.08;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
    background-size: 200px 200px;
    background-position: var(--grain-x, 0px) var(--grain-y, 0px);
}

/* ---- Body ---- */
body {
    background: linear-gradient(to bottom, var(--deep-base), var(--panel-base));
    background-attachment: fixed;
    color: var(--body-text);
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: 0.02em;
    overflow-x: hidden;
}

/* ---- Grid System ---- */
.grid {
    max-width: 1200px;
    margin-left: var(--margin);
    margin-right: var(--margin);
    display: grid;
    gap: var(--gutter);
}

.grid--three {
    grid-template-columns: repeat(3, 1fr);
}

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

/* ---- Rack Rows ---- */
.rack-row {
    padding: 24px 0;
}

.rack-row--hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
}

/* ---- Rack Rail ---- */
.rack-rail {
    height: 48px;
    display: flex;
    align-items: center;
    padding: 0 var(--margin);
}

.rack-rail::before {
    content: '';
    display: block;
    width: 100%;
    height: 1px;
    background: var(--rule);
}

/* ---- Cards ---- */
.card {
    border: 3px solid var(--border);
    background: var(--deep-base);
    transition: border-color 200ms ease-in-out;
    position: relative;
}

.card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.06;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
    background-size: 200px 200px;
}

.card:hover {
    border-color: var(--copper);
}

.card--full {
    grid-column: 1 / -1;
}

.card--deep {
    min-height: 300px;
}

/* ---- Card Header ---- */
.card__header {
    height: 40px;
    background: var(--panel-base);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    position: relative;
}

.card__header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
    background-size: 200px 200px;
}

.card__label {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 400;
    color: var(--amber);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.card__version {
    font-family: var(--font-accent);
    font-size: 14px;
    font-weight: 700;
    color: var(--copper);
}

/* ---- Card Body ---- */
.card__body {
    padding: 20px;
}

.card__body--hero {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    min-height: calc(100vh - 46px);
    padding: 40px;
    overflow: hidden;
}

.card__text {
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 400;
    color: var(--body-text);
    line-height: 1.7;
    letter-spacing: 0.02em;
}

.card__code-label {
    font-family: var(--font-accent);
    font-size: 24px;
    font-weight: 700;
    color: var(--copper);
    display: block;
    margin-bottom: 12px;
}

/* ---- Hero Section ---- */
.hero-waves {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.hero-wordmark {
    font-family: var(--font-display);
    font-size: 64px;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: linear-gradient(to right, var(--copper), var(--amber));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
    margin-bottom: 16px;
}

.hero-tagline {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 400;
    color: var(--body-text);
    line-height: 1.7;
    letter-spacing: 0.02em;
    max-width: 600px;
    position: relative;
    z-index: 1;
}

/* Hero card gradient top border */
.card__body--hero::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    height: 8px;
    background: linear-gradient(to right, var(--copper), var(--amber));
    z-index: 2;
}

/* ---- Wave Dividers ---- */
.wave-divider {
    display: block;
    width: 100%;
    height: 8px;
    margin: 16px 0;
}

/* ---- Code Wells ---- */
.code-well {
    background: var(--code-bg);
    padding: 12px;
    margin: 16px 0;
    overflow-x: auto;
}

.code-well pre {
    margin: 0;
}

.code-well code {
    font-family: var(--font-code);
    font-size: 13px;
    font-weight: 400;
    color: var(--phosphor);
    line-height: 1.6;
    letter-spacing: 0;
}

/* ---- Footer ---- */
.footer {
    position: relative;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.footer-waves {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.footer__content {
    position: relative;
    z-index: 1;
    text-align: left;
    width: 100%;
    padding: 0 var(--margin);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__version {
    font-family: var(--font-accent);
    font-size: 48px;
    font-weight: 700;
    color: var(--copper);
}

.footer__links {
    display: flex;
    gap: 24px;
}

.footer__link {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 400;
    color: var(--indigo);
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: color 200ms ease-in-out;
}

.footer__link:hover {
    color: var(--amber);
}

/* ---- Zoom-Focus Animation ---- */
.zoom-target {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 400ms cubic-bezier(0.33, 1, 0.68, 1), transform 400ms cubic-bezier(0.33, 1, 0.68, 1);
}

.zoom-target.visible {
    opacity: 1;
    transform: scale(1);
}

/* ---- Section transition wave ---- */
.rack-row {
    position: relative;
}

/* ---- Responsive: Tablet ---- */
@media (max-width: 1200px) and (min-width: 769px) {
    .grid--three {
        grid-template-columns: repeat(2, 1fr);
    }

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

/* ---- Responsive: Mobile ---- */
@media (max-width: 768px) {
    :root {
        --gutter: 16px;
    }

    .grid--three,
    .grid--two {
        grid-template-columns: 1fr;
    }

    .hero-wordmark {
        font-size: 40px;
    }

    .card__body--hero {
        min-height: calc(100vh - 46px);
        padding: 24px;
    }

    .footer__version {
        font-size: 32px;
    }

    .footer__content {
        flex-direction: column;
        gap: 16px;
        text-align: left;
        align-items: flex-start;
    }
}