/* ============================================================
   Johannes Krieg — Portfolio · "Terminal × Field" redesign
   1. Tokens   2. Base   3. Components   4. Sections
   5. Responsive   6. Reduced motion   7. Detail pages
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root {
    --font-sans: 'Space Grotesk', system-ui, sans-serif;
    --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

    /* Colors — Light (default) */
    --bg: #fbfaf7;
    --surface: #ffffff;
    --text: #1a1d21;
    --muted: #787469;
    --accent: #0e8a7d;
    --on-accent: #ffffff;
    --accent-soft: rgba(14, 138, 125, .10);
    --line: #e6e3da;
    --chip: #f1efe8;

    --radius: 12px;
    --radius-sm: 8px;
    --maxw: 1240px;
    --pad: clamp(16px, 4vw, 52px);
    --bs: 0 12px 40px rgba(20, 30, 28, .12);
}

[data-theme="dark"] {
    --bg: #0c0e10;
    --surface: #14171a;
    --text: #e8eaed;
    --muted: #8a9099;
    --accent: #2cc0ab;
    --on-accent: #06120f;
    --accent-soft: rgba(44, 192, 171, .14);
    --line: #23272c;
    --chip: #1b1e24;
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 1.7;
    transition: background-color .3s ease, color .3s ease;
}

img { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }

::selection { background: var(--accent); color: var(--on-accent); }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 2px;
}

.section { position: relative; padding: clamp(64px, 9vw, 120px) var(--pad); }
.section-inner { position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto; }

/* ---------- 3. Components ---------- */
/* Terminal prompt + cursor */
.prompt { font-family: var(--font-mono); font-size: 14px; color: var(--muted); }
.prompt .cmd { color: var(--accent); }
.section-prompt { margin: 0 0 14px; }
.section-title {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: clamp(28px, 4vw, 46px);
    letter-spacing: -.02em;
    line-height: 1.05;
    margin: 0 0 40px;
}
.cursor {
    display: inline-block;
    width: .58em;
    height: 1.05em;
    margin-left: 3px;
    background: var(--accent);
    vertical-align: -.16em;
    animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .5em;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: .01em;
    padding: 12px 22px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform .15s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--text); color: var(--bg); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* Tags */
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin: 0; padding: 0; list-style: none; }
.tag {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--muted);
    background: var(--chip);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 3px 9px;
}

/* Status badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text);
    background: var(--accent-soft);
    border: 1px solid var(--line);
    border-radius: 100px;
    padding: 7px 15px;
}
.status-badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 var(--accent-soft); }
    70% { box-shadow: 0 0 0 8px transparent; }
    100% { box-shadow: 0 0 0 0 transparent; }
}

/* Canvas backgrounds + readability layer */
.bg-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; display: block; }
.hero::after, .stack::after { content: ''; position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.hero::after { background: linear-gradient(180deg, color-mix(in srgb, var(--bg) 35%, transparent), var(--bg) 94%); }
.stack::after { background: linear-gradient(180deg, var(--bg), color-mix(in srgb, var(--bg) 55%, transparent) 45%, var(--bg)); }

/* Mask-recolored social icons (recycled SVGs from /icon) */
.social-icon {
    display: block;
    width: 20px;
    height: 20px;
    background: currentColor;
    -webkit-mask: var(--i) center / contain no-repeat;
    mask: var(--i) center / contain no-repeat;
}

/* ---------- 4. Sections ---------- */
/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--bg) 86%, transparent);
    -webkit-backdrop-filter: blur(9px);
    backdrop-filter: blur(9px);
    border-bottom: 1px solid var(--line);
}
.header-inner {
    display: flex;
    align-items: center;
    gap: 16px;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 12px var(--pad);
}
.window-dots { display: inline-flex; gap: 7px; flex: none; }
.window-dots span { width: 11px; height: 11px; border-radius: 50%; }
.window-dots span:nth-child(1) { background: #e8643c; }
.window-dots span:nth-child(2) { background: #e3b341; }
.window-dots span:nth-child(3) { background: #0e8a7d; }
.path { font-family: var(--font-mono); font-size: 13px; color: var(--muted); }
.path:hover { color: var(--text); }

.main-nav { margin-left: auto; display: flex; gap: 2px; }
.main-nav a {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--muted);
    padding: 7px 11px;
    border-radius: 6px;
}
.main-nav a:hover { color: var(--text); background: var(--chip); }

.header-controls { display: flex; align-items: center; gap: 6px; }
.icon-btn {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1;
    background: transparent;
    border: 1px solid var(--line);
    color: var(--text);
    border-radius: 6px;
    padding: 7px 10px;
    cursor: pointer;
    transition: border-color .2s ease, color .2s ease;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.menu-toggle { display: none; }

/* Hero */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: clamp(540px, 84vh, 880px);
    padding: 0 var(--pad);
    overflow: hidden;
}
.hero .prompt { font-size: 15px; color: var(--text); margin-bottom: 20px; }
.hero .prompt .muted { color: var(--muted); }
.hero-name { font-family: var(--font-sans); font-weight: 600; font-size: clamp(46px, 9vw, 124px); line-height: 1.02; letter-spacing: -.03em; margin: 0 0 14px; }
.hero-role { font-family: var(--font-mono); font-size: clamp(14px, 1.9vw, 19px); margin: 0 0 26px; color: var(--text); }
.hero-role .muted { color: var(--muted); }
.hero .status-badge { margin-bottom: 30px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* Selected Work */
.featured-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-bottom: 22px; }
.work-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 22px; }

.featured-card {
    position: relative;
    display: flex;
    align-items: flex-end;
    aspect-ratio: 16 / 11;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--line);
    color: #fff;
}
.featured-card > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.featured-card:hover > img { transform: scale(1.05); }
.featured-card .overlay {
    position: relative;
    z-index: 1;
    width: 100%;
    padding: 24px;
    background: linear-gradient(0deg, rgba(0, 0, 0, .85), rgba(0, 0, 0, .45) 55%, transparent);
}
.featured-card .card-title { color: #fff; }
.featured-card .card-desc { color: rgba(255, 255, 255, .82); }
.featured-card .tag { color: #fff; background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .22); }
.featured-flag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 1;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .04em;
    color: var(--on-accent);
    background: var(--accent);
    border-radius: 6px;
    padding: 4px 9px;
}

.card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    color: var(--text);
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 14px 40px rgba(20, 30, 28, .10); }
.card-media { aspect-ratio: 16 / 10; overflow: hidden; background: var(--chip); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.card:hover .card-media img { transform: scale(1.05); }
.card-body { padding: 18px 20px 20px; }
.card-title { font-family: var(--font-sans); font-weight: 600; font-size: 19px; letter-spacing: -.01em; margin: 0 0 8px; }
.featured-card .card-title { font-size: clamp(21px, 2.6vw, 29px); }
.card-desc { font-size: 13px; color: var(--muted); line-height: 1.6; margin: 0 0 13px; }
.card .tags, .featured-card .tags { margin-top: 12px; }

/* Stack & Toolchain */
.stack-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.stack-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.stack-card .num { font-family: var(--font-mono); font-size: 12px; color: var(--accent); }
.stack-card h3 { font-family: var(--font-sans); font-weight: 600; font-size: 18px; margin: 6px 0 16px; }

/* About */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 26px; align-items: start; }
.comment-block {
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.85;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 26px 28px;
}
.comment-block .cmt { color: var(--muted); }
.facts { list-style: none; margin: 0; padding: 0; }
.facts li {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
    font-family: var(--font-mono);
    font-size: 13.5px;
}
.facts li:last-child { border-bottom: 0; }
.facts .k { color: var(--muted); }
.facts .v { color: var(--text); text-align: right; }

/* Contact / Footer */
.site-footer { border-top: 1px solid var(--line); }
.contact-title { font-family: var(--font-sans); font-weight: 600; font-size: clamp(34px, 6vw, 72px); letter-spacing: -.03em; line-height: 1.04; margin: 12px 0 30px; max-width: 18ch; }
.contact-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }
.footer-social { display: flex; gap: 12px; list-style: none; margin: 0; padding: 0; }
.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--muted);
    border: 1px solid var(--line);
    border-radius: 8px;
    transition: color .2s ease, border-color .2s ease;
}
.footer-social a:hover { color: var(--accent); border-color: var(--accent); }
.footer-meta { margin-top: 44px; font-family: var(--font-mono); font-size: 12px; color: var(--muted); }

/* ---------- 5. Responsive ---------- */
@media (max-width: 760px) {
    .main-nav {
        position: fixed;
        inset: 0 0 0 auto;
        width: min(78vw, 320px);
        flex-direction: column;
        gap: 6px;
        justify-content: center;
        padding: 32px;
        background: var(--surface);
        border-left: 1px solid var(--line);
        transform: translateX(100%);
        transition: transform .25s ease;
        z-index: 40;
    }
    .main-nav a { font-size: 16px; }
    body.nav-open .main-nav { transform: translateX(0); }
    .menu-toggle { display: inline-flex; }
    .path { display: none; }
    .featured-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
    .header-inner { gap: 10px; }
    .cta-row { width: 100%; }
    .cta-row .btn { flex: 1; justify-content: center; }
}

/* ---------- 6. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    * { scroll-behavior: auto !important; }
    .cursor, .status-badge .dot { animation: none; }
    .btn:hover, .card:hover, .featured-card:hover > img { transform: none; }
}

/* ============================================================
   7. Portfolio detail pages (portfolio/*.html)
   ============================================================ */
.intro {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: clamp(56px, 9vw, 110px) var(--pad) clamp(20px, 4vw, 44px);
    text-align: center;
}
.intro .section__title--intro {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: clamp(34px, 7vw, 76px);
    letter-spacing: -.03em;
    line-height: 1.02;
    margin: 0 0 20px;
    color: var(--text);
}
.intro .section__title--intro strong { color: var(--accent); font-weight: 600; }
.intro .section__subtitle--intro {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--muted);
    background: var(--chip);
    border: 1px solid var(--line);
    border-radius: 100px;
    padding: 6px 16px;
    margin: 0;
}
.intro__img {
    max-width: min(860px, 100%);
    margin: 36px auto 0;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--bs);
}
.portfolio-item-individual {
    max-width: 760px;
    margin: 0 auto;
    padding: clamp(32px, 6vw, 64px) var(--pad) clamp(56px, 9vw, 110px);
}
.portfolio-item-individual p {
    margin: 0 0 22px;
    font-size: 15.5px;
    line-height: 1.8;
    color: var(--text);
}
.portfolio-item-individual ul { list-style: none; margin: 0 0 22px; padding: 0; }
.portfolio-item-individual li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 10px;
    color: var(--text);
}
.portfolio-item-individual li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }
.portfolio-item-individual .intro__img { display: block; margin: 30px auto; }
.portfolio-item-individual a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.portfolio-item-individual br { display: none; }

/* Responsive video embeds (YouTube) */
.video-embed {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    margin: 30px auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: #000;
}
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* Self-hosted mp4 clips */
.portfolio-item-individual__vid-container {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin: 30px 0;
}
.portfolio-item-individual__vid-container video {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #000;
}

/* Inline reference links row */
.links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 8px 0 30px;
}
.links a {
    font-family: var(--font-mono);
    font-size: 12.5px;
    text-decoration: none;
    color: var(--muted);
    background: var(--chip);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 8px 13px;
    transition: color .2s ease, border-color .2s ease;
}
.links a:hover { color: var(--accent); border-color: var(--accent); }
.links a::before { content: "↗ "; color: var(--accent); }