/* ── SugarBuzz palette ─────────────────────────────────────────── */
:root {
    --pink:    #ff5f87;   /* primary accent */
    --pink-2:  #ff8caa;
    --grape:   #a78bfa;
    --mint:    #6ee7b7;
    --lemon:   #fde68a;
    --orange:  #fb923c;
    --peach:   #fcd5b4;
    --sky:     #7dd3fc;

    --bg:      #fff5fa;   /* page bg, very pale pink */
    --card:    #ffffff;
    --ink:     #1f1233;   /* near-black, faint purple */
    --ink-2:   #4a3868;   /* secondary text */
    --line:    rgba(31, 18, 51, 0.10);

    --gradient-hero: linear-gradient(135deg, #ff5f87 0%, #a78bfa 50%, #7dd3fc 100%);
    --gradient-pop:  linear-gradient(120deg, #fde68a 0%, #fcd5b4 50%, #ff8caa 100%);

    --shadow-sm:  0 2px  4px rgba(31, 18, 51, 0.06);
    --shadow-md:  0 6px 18px rgba(31, 18, 51, 0.10);
    --shadow-lg:  0 14px 36px rgba(31, 18, 51, 0.12);

    --radius-sm: 10px;
    --radius:    16px;
    --radius-lg: 28px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg:    #16101f;
        --card:  #1f162d;
        --ink:   #fbeefa;
        --ink-2: #c5b6dd;
        --line:  rgba(255, 255, 255, 0.10);
    }
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
                 "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    font-size: 17px;
}

a { color: var(--pink); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--grape); }

code, pre, .mono {
    font-family: "JetBrains Mono", "Fira Code", "SF Mono", Menlo,
                 ui-monospace, monospace;
    font-size: 0.92em;
}

/* ── Layout primitives ─────────────────────────────────────────── */
.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 96px 0;
}

.section h2 {
    font-size: 2.1rem;
    margin: 0 0 12px 0;
    letter-spacing: -0.01em;
}

.section .lede {
    color: var(--ink-2);
    margin: 0 0 48px 0;
    max-width: 60ch;
    font-size: 1.05rem;
}

/* ── Top nav ───────────────────────────────────────────────────── */
.nav {
    position: sticky;
    top: 0;
    z-index: 30;
    background: color-mix(in srgb, var(--bg) 80%, transparent);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
}

.nav-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 14px 24px;
    max-width: 1080px;
    margin: 0 auto;
}

.brand {
    font-weight: 700;
    color: var(--ink);
    letter-spacing: -0.01em;
}

/* The lollipop site mark — used in the top-left brand link and in
   the footer. Forced to an explicit pixel size so the underlying
   500×500 PNG renders crisply on hi-DPI without bleeding into the
   surrounding text. */
.logo-mark {
    display: inline-block;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-image: url('../img/profile.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: var(--card);
    margin-right: 10px;
    vertical-align: middle;
    box-shadow: var(--shadow-sm);
}

.brand .logo-mark { width: 32px; height: 32px; }
.footer .logo-mark { width: 28px; height: 28px; margin-right: 8px; }

.nav-links {
    margin-left: auto;
    display: flex;
    gap: 18px;
}

.nav-links a {
    color: var(--ink-2);
    font-size: 0.95rem;
    padding: 6px 12px;
    border-radius: 999px;
    transition: background .15s ease, color .15s ease;
}

.nav-links a:hover {
    color: var(--ink);
    background: var(--line);
}

/* ── Hero ──────────────────────────────────────────────────────── */
.hero {
    position: relative;
    overflow: hidden;
    padding: 120px 0 96px 0;
    text-align: center;
}

.hero::before {
    content: "";
    position: absolute;
    inset: -120px -10% auto -10%;
    height: 540px;
    background: var(--gradient-hero);
    filter: blur(80px);
    opacity: 0.18;
    z-index: -1;
}

.hero h1 {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    margin: 0 0 16px 0;
    letter-spacing: -0.025em;
    line-height: 1.05;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero .tag {
    font-size: 1.25rem;
    color: var(--ink-2);
    max-width: 56ch;
    margin: 0 auto 32px auto;
}

.cta-row {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 999px;
    font-weight: 600;
    transition: transform .12s ease, box-shadow .12s ease, filter .12s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--gradient-hero);
    color: #fff;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: #fff;
    filter: brightness(1.05);
}

.btn-ghost {
    border-color: var(--line);
    color: var(--ink);
}

.btn-ghost:hover {
    background: var(--card);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* ── Hero bobbing glyphs ───────────────────────────────────────── */
.glyph-row {
    display: flex;
    justify-content: center;
    gap: 36px;
    margin-top: 48px;
    font-size: 2.4rem;
    user-select: none;
}

.glyph {
    display: inline-block;
    animation: bob 4s ease-in-out infinite;
}

.glyph:nth-child(2) { animation-delay: 0.4s; }
.glyph:nth-child(3) { animation-delay: 0.8s; }
.glyph:nth-child(4) { animation-delay: 1.2s; }
.glyph:nth-child(5) { animation-delay: 1.6s; }

@keyframes bob {
    0%, 100% { transform: translateY(0)    rotate(-3deg); }
    50%      { transform: translateY(-12px) rotate(3deg); }
}

@media (prefers-reduced-motion) {
    .glyph { animation: none; }
}

/* ── Library grid ──────────────────────────────────────────────── */
.lib-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 18px;
}

.lib-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    position: relative;
    overflow: hidden;
    color: var(--ink);
}

.lib-card::after {
    content: "";
    position: absolute;
    inset: -50px -50px auto auto;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: var(--gradient-pop);
    opacity: 0;
    transition: opacity .18s ease;
    z-index: 0;
}

.lib-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.lib-card:hover::after {
    opacity: 0.18;
}

.lib-card > * { position: relative; z-index: 1; }

.lib-card .glyph-tag {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.lib-card h3 {
    margin: 0 0 6px 0;
    font-size: 1.1rem;
    letter-spacing: -0.005em;
}

.lib-card .lib-source {
    color: var(--ink-2);
    font-size: 0.82rem;
    margin: 0 0 12px 0;
}

.lib-card .lib-source a { color: var(--ink-2); }
.lib-card .lib-source a:hover { color: var(--pink); }

.lib-card p.summary {
    margin: 0 0 16px 0;
    color: var(--ink-2);
    font-size: 0.95rem;
}

.lib-card .links {
    display: flex;
    gap: 12px;
    font-size: 0.85rem;
    flex-wrap: wrap;
}

/* ── Demo gallery ──────────────────────────────────────────────── */
.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 22px;
}

.demo-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform .18s ease, box-shadow .18s ease;
    color: var(--ink);
    display: block;
}

.demo-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    color: var(--ink);
}

.demo-card img {
    /* Show the GIF in full — VHS recordings come in a mix of 4:3,
       16:9 and 5:3 aspect ratios, and `cover` was cropping the
       sides off the wider ones. `contain` keeps every frame
       visible inside the same card footprint; the dark TokyoNight
       background colour blends cleanly with the recording theme
       so any letterbox bars read as part of the gif. */
    display: block;
    width: 100%;
    height: auto;
    max-height: 360px;
    object-fit: contain;
    background: #1a1b26;   /* TokyoNight bg — matches the .tape theme */
    border-bottom: 1px solid var(--line);
}

.demo-card h3 {
    margin: 16px 18px 4px;
    font-size: 1.05rem;
    letter-spacing: -0.005em;
}

.demo-card p {
    margin: 0 18px 16px;
    color: var(--ink-2);
    font-size: 0.92rem;
}

/* ── Code blocks ───────────────────────────────────────────────── */
pre.code, .code-block {
    background: #1f162d;
    color: #fbeefa;
    padding: 22px 24px;
    border-radius: var(--radius);
    overflow-x: auto;
    font-size: 0.92rem;
    line-height: 1.6;
    box-shadow: var(--shadow-md);
    position: relative;
}

pre.code .kw   { color: #ff8caa; }
pre.code .str  { color: #fde68a; }
pre.code .cls  { color: #7dd3fc; }
pre.code .com  { color: #8c7daa; font-style: italic; }
pre.code .fn   { color: #6ee7b7; }
pre.code .num  { color: #fcd5b4; }

.copy-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.10);
    color: #fbeefa;
    font-size: 0.78rem;
    padding: 5px 12px;
    border-radius: 999px;
    cursor: pointer;
    transition: background .12s ease;
}

.copy-btn:hover { background: rgba(255, 255, 255, 0.14); }

.copy-btn.copied { background: var(--pink); border-color: var(--pink); }

/* ── Quickstart card ───────────────────────────────────────────── */
.quickstart {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
}

.quickstart h3 {
    margin: 0 0 12px 0;
    font-size: 1.2rem;
}

.quickstart .install {
    display: flex;
    gap: 12px;
    align-items: stretch;
    margin-bottom: 24px;
}

.install pre.code { flex: 1; margin: 0; }

/* ── Compare table ─────────────────────────────────────────────── */
.compare {
    width: 100%;
    border-collapse: collapse;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.compare th, .compare td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--line);
}

.compare thead th {
    background: var(--gradient-pop);
    color: var(--ink);
    font-size: 0.95rem;
}

.compare tbody tr:last-child td { border-bottom: 0; }

.compare td.yes { color: #16a34a; font-weight: 600; }
.compare td.no  { color: var(--ink-2); }

/* ── Footer ────────────────────────────────────────────────────── */
.footer {
    border-top: 1px solid var(--line);
    padding: 48px 0;
    color: var(--ink-2);
    font-size: 0.92rem;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
}

.footer a { color: var(--ink-2); }
.footer a:hover { color: var(--pink); }

/* ── Hero banner image ─────────────────────────────────────────── */
.hero-banner {
    display: block;
    width: 100%;
    max-width: 720px;
    margin: 0 auto 32px auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    aspect-ratio: 2 / 1;
    object-fit: cover;
}

.hero-mark {
    display: inline-block;
    width: 96px;
    height: 96px;
    border-radius: 50%;
    margin-bottom: 24px;
    box-shadow: var(--shadow-lg);
}

/* ── Stats strip ───────────────────────────────────────────────── */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 18px;
    margin: 32px 0 0 0;
}

.stat {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat .num {
    display: block;
    font-size: 2.2rem;
    font-weight: 700;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.stat .label {
    color: var(--ink-2);
    font-size: 0.92rem;
    margin-top: 6px;
}

/* ── Library / app card icon image ─────────────────────────────── */
.lib-card .lib-icon {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    object-fit: cover;
    box-shadow: var(--shadow-sm);
    margin-bottom: 12px;
    background: var(--card);
}

.lib-card .lib-icon-row {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 8px;
}

.lib-card .lib-icon-row h3 { margin: 0; }

/* ── Lib detail page header ────────────────────────────────────── */
.detail-header {
    display: grid;
    grid-template-columns: 144px 1fr;
    gap: 28px;
    align-items: center;
    margin-bottom: 16px;
}

.detail-header .detail-icon {
    width: 144px;
    height: 144px;
    border-radius: 28px;
    object-fit: cover;
    box-shadow: var(--shadow-md);
    background: var(--card);
}

.detail-header h2 { margin: 0; font-size: 2.2rem; letter-spacing: -0.02em; }
.detail-header .detail-sub { margin: 6px 0 0 0; color: var(--ink-2); }

.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 16px 0 0 0;
}

.tag-chip {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 4px 12px;
    font-size: 0.82rem;
    color: var(--ink-2);
}

.tag-chip.accent {
    background: var(--gradient-pop);
    color: var(--ink);
    border-color: transparent;
    font-weight: 600;
}

/* ── Feature grid (lib pages) ──────────────────────────────────── */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 14px;
    margin-top: 24px;
}

.feature-grid .feature {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 16px 18px;
}

.feature-grid .feature strong {
    display: block;
    margin-bottom: 4px;
    color: var(--ink);
    font-size: 0.98rem;
}

.feature-grid .feature span {
    color: var(--ink-2);
    font-size: 0.9rem;
}

/* ── Architecture pillars (front page) ─────────────────────────── */
.pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
    margin-top: 32px;
}

.pillar {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px;
}

.pillar .icon {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.pillar h3 { margin: 0 0 8px 0; font-size: 1.05rem; }
.pillar p { margin: 0; color: var(--ink-2); font-size: 0.95rem; }

/* ── Demo card with caption inside ─────────────────────────────── */
.demo-card .demo-caption {
    display: block;
    margin: 0 18px 14px;
    color: var(--ink-2);
    font-size: 0.88rem;
}

/* ── Layer diagram ─────────────────────────────────────────────── */
.layers {
    display: grid;
    gap: 12px;
    margin-top: 28px;
}

.layer {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 18px 22px;
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 18px;
    align-items: center;
}

.layer .layer-title {
    font-weight: 700;
    color: var(--ink);
    font-size: 0.98rem;
}

.layer .layer-bullets {
    color: var(--ink-2);
    font-size: 0.94rem;
}

.layer.l1 { border-left: 4px solid var(--pink); }
.layer.l2 { border-left: 4px solid var(--grape); }
.layer.l3 { border-left: 4px solid var(--mint); }
.layer.l4 { border-left: 4px solid var(--orange); }
.layer.l5 { border-left: 4px solid var(--sky); }

/* ── Logo strip on home page ───────────────────────────────────── */
.logo-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
    gap: 16px;
    margin-top: 32px;
    align-items: center;
    justify-items: center;
}

.logo-strip img {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    object-fit: cover;
    transition: transform .18s ease;
    box-shadow: var(--shadow-sm);
}

.logo-strip a:hover img {
    transform: translateY(-3px) scale(1.05);
}

/* ── Callout / quote panel ─────────────────────────────────────── */
.callout {
    background: var(--gradient-pop);
    border-radius: var(--radius-lg);
    padding: 36px 40px;
    margin-top: 32px;
    color: var(--ink);
    box-shadow: var(--shadow-md);
}

.callout h3 {
    margin: 0 0 8px 0;
    font-size: 1.4rem;
    letter-spacing: -0.01em;
}

.callout p {
    margin: 0;
    font-size: 1.05rem;
    color: var(--ink);
}

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 640px) {
    .nav-links a:not(.btn) { display: none; }
    .nav-links a.btn { display: inline-flex; }
    .section { padding: 64px 0; }
    .hero { padding: 64px 0 48px 0; }
    .quickstart { padding: 22px; }
    .quickstart .install { flex-direction: column; }
    .detail-header { grid-template-columns: 1fr; text-align: center; }
    .detail-header .detail-icon { margin: 0 auto; }
    .layer { grid-template-columns: 1fr; }
}

/* ── Lightbox ──────────────────────────────────────────────────── */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(15, 8, 28, 0.78);
    backdrop-filter: blur(6px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 32px;
    cursor: zoom-out;
    animation: lightbox-fade .15s ease;
}

.lightbox.is-open { display: flex; }

@keyframes lightbox-fade {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.lightbox-figure {
    margin: 0;
    max-width: min(1280px, 96vw);
    max-height: 92vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    cursor: default;
}

.lightbox-figure img {
    display: block;
    max-width: 100%;
    max-height: 84vh;
    width: auto;
    height: auto;
    border-radius: var(--radius);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
    background: #1a1b26;   /* TokyoNight bg — same as the demo cards */
    object-fit: contain;
}

.lightbox-figure figcaption {
    color: #fbeefa;
    font-size: 0.95rem;
    text-align: center;
    max-width: 70ch;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.lightbox-close {
    position: absolute;
    top: 18px;
    right: 22px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.10);
    color: #fbeefa;
    font-size: 1.6rem;
    line-height: 1;
    cursor: pointer;
    transition: background .15s ease, transform .15s ease;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.20);
    transform: scale(1.05);
}