:root {
    --bg: #f5f0e8;
    --bg-alt: #ffffff;
    --ink: #1a1a1a;
    --ink-light: #6b6560;
    --cream: #f5f0e8;
    --card-bg: #ffffff;
    --card-border: rgba(26,26,26,.08);
    --nav-bg: rgba(245,240,232,.85);
    --nav-border: rgba(26,26,26,.06);
    --orange: #e8572a;
    --orange-light: #ff7a52;
    --teal: #1a8a7d;
    --teal-light: #2bc4b0;
    --lemon: #e8d44a;
    --blue: #3d5afe;
    --shadow-color: rgba(26,26,26,.08);
    --shadow-strong: rgba(26,26,26,.14);
    --pill-bg: rgba(26,26,26,.05);
    --tag-bg: rgba(26,26,26,.06);
    --logo-border: rgba(26,26,26,.08);
    --font-display: 'Instrument Serif', Georgia, serif;
    --font-body: 'Outfit', system-ui, sans-serif;
    --font-mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
}

[data-theme="dark"] {
    --bg: #121214;
    --bg-alt: #1a1a1e;
    --ink: #e8e4dc;
    --ink-light: #9a958f;
    --cream: #e8e4dc;
    --card-bg: #1e1e22;
    --card-border: rgba(255,255,255,.07);
    --nav-bg: rgba(18,18,20,.88);
    --nav-border: rgba(255,255,255,.06);
    --shadow-color: rgba(0,0,0,.35);
    --shadow-strong: rgba(0,0,0,.5);
    --pill-bg: rgba(255,255,255,.06);
    --tag-bg: rgba(255,255,255,.06);
    --logo-border: rgba(255,255,255,.1);
}

*,*::before,*::after { margin: 0; padding: 0; box-sizing: border-box; }
::selection { background: var(--orange); color: #fff; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--ink);
    overflow-x: hidden;
    min-height: 100vh;
    transition: background .4s, color .4s;
}
a { color: inherit; }

/* ---------- Nav ---------- */

nav {
    position: sticky;
    top: 0;
    z-index: 99;
    padding: 1rem 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1.5px solid var(--nav-border);
    transition: background .4s, border-color .4s;
}

.nav-logo {
    display: inline-flex;
    align-items: center;
    gap: .65rem;
    text-decoration: none;
    color: var(--ink);
    user-select: none;
    transition: transform .2s;
}
.nav-logo:active { transform: scale(.96); }
.nav-logo .logo-img {
    width: 38px;
    height: 38px;
    object-fit: cover;
    border-radius: 10px;
    border: 1.5px solid var(--logo-border);
    transition: transform .3s cubic-bezier(.34,1.56,.64,1);
}
.nav-logo:hover .logo-img { transform: rotate(-4deg) scale(1.05); }
.nav-name { font-family: var(--font-display); font-size: 1.35rem; letter-spacing: -.3px; }
.nav-name-prefix { color: var(--ink-light); }
.nav-name em { font-style: italic; color: var(--orange); }

.nav-right { display: flex; align-items: center; gap: 1rem; }

.nav-back {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    font-size: .82rem;
    font-weight: 500;
    color: var(--ink-light);
    text-decoration: none;
    padding: .5rem .9rem;
    border-radius: 100px;
    transition: color .2s, background .2s;
}
.nav-back:hover { color: var(--ink); background: var(--pill-bg); }
.nav-back svg { transition: transform .2s; }
.nav-back:hover svg { transform: translateX(-3px); }

.theme-toggle {
    background: none;
    border: 1.5px solid var(--card-border);
    width: 40px; height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--ink);
    transition: all .3s cubic-bezier(.34,1.56,.64,1);
    flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--orange); color: var(--orange); transform: scale(1.08); }
.theme-toggle svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform .4s cubic-bezier(.34,1.56,.64,1); }
.theme-toggle:hover svg { transform: rotate(30deg); }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* ---------- Hero ---------- */

.hero {
    text-align: center;
    padding: 5rem 2rem 3rem;
    max-width: 760px;
    margin: 0 auto;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .7rem;
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--orange);
    margin-bottom: 1.4rem;
}
.eyebrow-line { display: block; width: 28px; height: 1.5px; background: currentColor; opacity: .45; }

.hero h1 {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(2.6rem, 6vw, 4.5rem);
    line-height: 1;
    letter-spacing: -1.5px;
    margin-bottom: 1.4rem;
}
.hero h1 em { font-style: italic; color: var(--orange); }

.hero-sub {
    max-width: 560px;
    margin: 0 auto;
    color: var(--ink-light);
    font-size: 1.05rem;
    line-height: 1.65;
}

/* ---------- Labs list ---------- */

.labs-list {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem 2rem 4rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.lab {
    display: grid;
    grid-template-columns: 64px 1.05fr 1fr;
    gap: 0;
    border-radius: 22px;
    border: 1.5px solid var(--card-border);
    background: var(--card-bg);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform .35s cubic-bezier(.34,1.56,.64,1), box-shadow .35s, border-color .35s;
}
.lab:hover { transform: translateY(-4px); box-shadow: 0 24px 60px var(--shadow-color); border-color: transparent; }

.lab-num {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 2.4rem;
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-style: italic;
    color: var(--ink-light);
    background: var(--bg);
    border-right: 1.5px solid var(--card-border);
    transition: background .35s;
}
.lab:hover .lab-num { background: rgba(232,87,42,.06); color: var(--orange); }

.lab-preview {
    background: #1c1c1c;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-right: 1.5px solid var(--card-border);
}
[data-theme="dark"] .lab-preview { border-right-color: rgba(255,255,255,.08); }
.lab-preview svg { width: 100%; height: 100%; display: block; }

.lab-meta {
    padding: 2rem 2.2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.lab-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: .75rem;
    flex-wrap: wrap;
}

.lab-meta h3 {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(1.5rem, 2.4vw, 1.95rem);
    line-height: 1.1;
    letter-spacing: -.5px;
}

.lab-status {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-size: .65rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: .25rem .6rem;
    border-radius: 4px;
    color: #fff;
}
.status-live { background: var(--teal); }
.status-dot {
    width: 6px;
    height: 6px;
    background: #fff;
    border-radius: 50%;
    animation: dot-blink 1.5s ease-in-out infinite;
}
@keyframes dot-blink { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

.lab-meta p {
    color: var(--ink-light);
    font-size: .9rem;
    line-height: 1.65;
    margin-bottom: 1.1rem;
}

.lab-tags { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: 1.1rem; }
.tag {
    font-family: var(--font-mono);
    font-size: .68rem;
    letter-spacing: .04em;
    color: var(--ink-light);
    background: var(--tag-bg);
    padding: .2rem .55rem;
    border-radius: 4px;
}

.lab-go {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    font-family: var(--font-mono);
    font-size: .82rem;
    font-weight: 600;
    color: var(--orange);
    letter-spacing: -.005em;
    transition: gap .25s;
}
.lab:hover .lab-go { gap: .75rem; }
.lab-go svg { transition: transform .25s; }
.lab:hover .lab-go svg { transform: translate(2px, -2px); }

/* "Coming soon" empty card */

.lab-empty {
    grid-template-columns: 64px 1fr;
    background: transparent;
    border: 1.5px dashed var(--card-border);
}
.lab-empty:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--orange);
}
.lab-num-empty { background: transparent; }
.lab:hover .lab-num-empty { background: transparent; color: var(--ink-light); }
.lab-empty-body { padding: 2rem 2.2rem; }
.lab-empty-body h3 {
    font-family: var(--font-display);
    font-weight: 400;
    font-style: italic;
    font-size: 1.6rem;
    color: var(--ink-light);
    margin-bottom: .5rem;
}
.lab-empty-body p { color: var(--ink-light); font-size: .9rem; line-height: 1.65; }
.lab-empty-body a {
    color: var(--orange);
    text-decoration: none;
    border-bottom: 1px dotted rgba(232,87,42,.4);
}
.lab-empty-body a:hover { border-bottom-color: var(--orange); }

/* ---------- Footer ---------- */

footer {
    border-top: 1px solid var(--card-border);
    padding: 1.5rem 2.5rem;
    transition: border-color .4s;
}
.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: .82rem;
    color: var(--ink-light);
}
.footer-inner a {
    color: var(--ink);
    text-decoration: none;
    border-bottom: 1px dotted var(--ink-light);
    transition: color .2s, border-color .2s;
}
.footer-inner a:hover { color: var(--orange); border-bottom-color: var(--orange); }
.footer-links { display: flex; gap: 1.5rem; }

/* ---------- Responsive ---------- */

@media (max-width: 840px) {
    nav { padding: .9rem 1.4rem; }
    .nav-back { display: none; }
    .nav-name-prefix { display: none; }
    .nav-name { font-size: 1.4rem; }
    .hero { padding: 3rem 1.4rem 2rem; }
    .labs-list { padding: 0 1.4rem 3rem; }
    .lab { grid-template-columns: 1fr; }
    .lab-num { padding: 1rem; border-right: none; border-bottom: 1.5px solid var(--card-border); }
    .lab-preview { aspect-ratio: 16 / 9; border-right: none; border-bottom: 1.5px solid var(--card-border); }
    .lab-meta { padding: 1.6rem 1.4rem; }
    .lab-empty { grid-template-columns: 1fr; }
    .lab-empty-body { padding: 1.2rem 1.4rem; }
    footer { padding: 1.2rem 1.4rem; }
}