:root {
    --font-body: "Space Grotesk", sans-serif;
    --font-mono: "IBM Plex Mono", monospace;
    --bg: #f5f8ff;
    --surface: #ffffff;
    --surface-subtle: #edf3ff;
    --text: #111827;
    --text-muted: #526078;
    --border: rgba(15, 23, 42, 0.14);
    --accent: #2563eb;
    --accent-rgb: 37, 99, 235;
    --accent-two: #f97316;
    --header: rgba(255, 255, 255, 0.94);
    --shadow: rgba(15, 23, 42, 0.12);
}

body.theme-matrix {
    --bg: #070908;
    --surface: #0d110f;
    --surface-subtle: #121814;
    --text: #e8fff3;
    --text-muted: #a8c6b6;
    --border: rgba(0, 255, 136, 0.22);
    --accent: #00ff88;
    --accent-rgb: 0, 255, 136;
    --accent-two: #facc15;
    --header: rgba(7, 9, 8, 0.94);
    --shadow: rgba(0, 0, 0, 0.55);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

a,
button {
    cursor: pointer;
}

@media (hover: hover) and (pointer: fine) {
    body,
    a,
    button {
        cursor: none;
    }
}

.skip-link {
    position: fixed;
    top: -60px;
    left: 16px;
    z-index: 1000;
    padding: 10px 14px;
    background: var(--accent);
    color: var(--bg);
    text-decoration: none;
    border-radius: 4px;
}

.skip-link:focus {
    top: 12px;
}

.cursor,
.cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 2000;
    pointer-events: none;
    opacity: 0;
    transform: translate(-50%, -50%);
}

.cursor {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--accent);
}

.cursor-ring {
    width: 30px;
    height: 30px;
    border: 1px solid rgba(var(--accent-rgb), 0.6);
    border-radius: 50%;
    transition: width 0.15s ease, height 0.15s ease, border-color 0.15s ease;
}

.cursor-ring.active {
    width: 40px;
    height: 40px;
    border-color: var(--accent);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--header);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
}

.nav-shell {
    width: min(1180px, calc(100% - 40px));
    min-height: 72px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 23px;
    font-weight: 700;
    text-decoration: none;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.site-nav a {
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 14px;
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
    color: var(--accent);
}

.theme-toggle {
    min-width: 88px;
    min-height: 38px;
    padding: 7px 12px;
    border: 1px solid rgba(var(--accent-rgb), 0.36);
    border-radius: 999px;
    background: transparent;
    color: var(--text);
    font-family: var(--font-mono);
}

.case-hero {
    min-height: calc(82vh - 72px);
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border);
    background:
        linear-gradient(rgba(var(--accent-rgb), 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(var(--accent-rgb), 0.05) 1px, transparent 1px);
    background-size: 48px 48px;
}

.hero-inner,
.content-inner {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

.hero-inner {
    padding: 72px 0 64px;
}

.eyebrow {
    margin: 0 0 18px;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.case-hero h1 {
    max-width: 920px;
    margin: 0;
    font-size: clamp(46px, 7vw, 88px);
    line-height: 0.98;
    letter-spacing: 0;
}

.case-hero .lede {
    max-width: 760px;
    margin: 28px 0 0;
    color: var(--text-muted);
    font-size: 20px;
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 18px;
    border: 1px solid var(--accent);
    border-radius: 4px;
    background: var(--accent);
    color: var(--bg);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
}

.action.secondary {
    background: transparent;
    color: var(--accent);
}

.metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 54px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.metric {
    min-height: 124px;
    padding: 22px 24px 20px 0;
}

.metric + .metric {
    padding-left: 24px;
    border-left: 1px solid var(--border);
}

.metric strong {
    display: block;
    margin-bottom: 8px;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 31px;
}

.metric span {
    color: var(--text-muted);
    line-height: 1.5;
}

.case-section {
    padding: 88px 0;
    border-bottom: 1px solid var(--border);
}

.case-section.alt {
    background: var(--surface);
}

.section-heading {
    display: grid;
    grid-template-columns: minmax(170px, 0.34fr) minmax(0, 1fr);
    gap: 60px;
}

.section-heading h2 {
    margin: 0;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 15px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.section-copy h3 {
    margin: 0 0 18px;
    font-size: 34px;
    line-height: 1.15;
}

.section-copy p {
    max-width: 760px;
    margin: 0;
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1.75;
}

.detail-columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 56px;
    margin-top: 52px;
}

.detail-block {
    padding-top: 18px;
    border-top: 2px solid rgba(var(--accent-rgb), 0.5);
}

.detail-block h3 {
    margin: 0 0 14px;
    font-size: 21px;
}

.detail-block p,
.detail-block li {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.7;
}

.detail-block ul,
.tradeoff-list {
    margin: 0;
    padding-left: 20px;
}

.detail-block li + li,
.tradeoff-list li + li {
    margin-top: 10px;
}

.architecture {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 34px;
    margin-top: 52px;
}

.arch-node {
    position: relative;
    min-height: 146px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface-subtle);
}

.arch-node:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -35px;
    width: 34px;
    border-top: 1px solid var(--accent);
}

.arch-node strong {
    display: block;
    margin-bottom: 12px;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 14px;
}

.arch-node span {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.55;
}

.stack-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 34px;
}

.stack-list span {
    padding: 7px 10px;
    border: 1px solid rgba(var(--accent-rgb), 0.28);
    border-radius: 999px;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 12px;
}

.next-project {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    padding: 60px 0;
}

.next-project p {
    margin: 0 0 8px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 12px;
    text-transform: uppercase;
}

.next-project h2 {
    margin: 0;
    font-size: 32px;
}

.site-footer {
    padding: 30px 20px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    text-align: center;
    font-size: 14px;
}

:focus-visible {
    outline: 3px solid rgba(var(--accent-rgb), 0.48);
    outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (max-width: 760px) {
    .nav-shell,
    .hero-inner,
    .content-inner {
        width: min(100% - 32px, 1120px);
    }

    .site-nav a:not(.home-link) {
        display: none;
    }

    .site-nav {
        gap: 10px;
    }

    .theme-toggle {
        min-width: 76px;
    }

    .case-hero {
        min-height: auto;
    }

    .hero-inner {
        padding: 60px 0 44px;
    }

    .case-hero h1 {
        font-size: clamp(42px, 13vw, 62px);
    }

    .case-hero .lede {
        font-size: 18px;
    }

    .metrics,
    .section-heading,
    .detail-columns,
    .architecture {
        grid-template-columns: 1fr;
    }

    .metric {
        min-height: 0;
        padding: 18px 0;
    }

    .metric + .metric {
        padding-left: 0;
        border-top: 1px solid var(--border);
        border-left: 0;
    }

    .case-section {
        padding: 64px 0;
    }

    .section-heading,
    .detail-columns {
        gap: 34px;
    }

    .architecture {
        gap: 16px;
    }

    .arch-node {
        min-height: 0;
    }

    .arch-node:not(:last-child)::after {
        top: auto;
        right: auto;
        bottom: -17px;
        left: 28px;
        width: 1px;
        height: 16px;
        border-top: 0;
        border-left: 1px solid var(--accent);
    }

    .next-project {
        align-items: flex-start;
        flex-direction: column;
    }
}