/* Brüce landing page. Dark-first, light-aware. No build step. */

:root {
  --bg: #07090a;
  --bg-2: #0d1112;
  --ink: #f2f5ec;
  --ink-2: #b9c1b3;
  --ink-3: #8a9386;
  --lime: #ccf03a;
  --lime-ink: #0b0d0c;
  --accent-text: #ccf03a;
  --teal: #2fb39a;
  --violet: #7b6cf0;
  --glass: rgba(255, 255, 255, 0.055);
  --glass-strong: rgba(255, 255, 255, 0.09);
  --glass-edge: rgba(255, 255, 255, 0.14);
  --glass-hi: rgba(255, 255, 255, 0.22);
  --shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.8);
  --code-bg: rgba(0, 0, 0, 0.45);
  --warn: #ffb347;
  --aurora-a: rgba(204, 240, 58, 0.30);
  --aurora-b: rgba(47, 179, 154, 0.28);
  --aurora-c: rgba(123, 108, 240, 0.24);
  --radius: 28px;
  --display: "Unbounded", "SF Pro Display", system-ui, -apple-system, "Segoe UI", sans-serif;
  --text: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f4f6ee; --bg-2: #e9ede0; --ink: #0d110e; --ink-2: #3c4439; --ink-3: #5b6457;
    --accent-text: #4a6400; --glass: rgba(255, 255, 255, 0.55); --glass-strong: rgba(255, 255, 255, 0.75);
    --glass-edge: rgba(13, 17, 14, 0.10); --glass-hi: rgba(255, 255, 255, 0.9); --shadow: 0 30px 70px -35px rgba(30, 40, 20, 0.35);
    --code-bg: rgba(13, 17, 14, 0.88); --warn: #9a5a00;
    --aurora-a: rgba(204, 240, 58, 0.45); --aurora-b: rgba(47, 179, 154, 0.25); --aurora-c: rgba(123, 108, 240, 0.18);
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #f4f6ee; --bg-2: #e9ede0; --ink: #0d110e; --ink-2: #3c4439; --ink-3: #5b6457;
  --accent-text: #4a6400; --glass: rgba(255, 255, 255, 0.55); --glass-strong: rgba(255, 255, 255, 0.75);
  --glass-edge: rgba(13, 17, 14, 0.10); --glass-hi: rgba(255, 255, 255, 0.9); --shadow: 0 30px 70px -35px rgba(30, 40, 20, 0.35);
  --code-bg: rgba(13, 17, 14, 0.88); --warn: #9a5a00;
  --aurora-a: rgba(204, 240, 58, 0.45); --aurora-b: rgba(47, 179, 154, 0.25); --aurora-c: rgba(123, 108, 240, 0.18);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 17px/1.6 var(--text); overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
p a, li a { color: var(--accent-text); text-underline-offset: 3px; }
code { font: 0.9em var(--mono); background: var(--glass-strong); border: 1px solid var(--glass-edge); padding: 0.05em 0.4em; border-radius: 6px; }
h1, h2, h3 { margin: 0; line-height: 1.05; }
h2 { font: 900 clamp(30px, 5.2vw, 56px)/1.02 var(--display); letter-spacing: -0.02em; text-transform: uppercase; }
h3 { font: 700 19px/1.25 var(--text); }
:focus-visible { outline: 3px solid var(--lime); outline-offset: 3px; border-radius: 10px; }
.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }

.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--lime); color: var(--lime-ink); padding: 10px 16px; border-radius: 12px; font-weight: 700; text-decoration: none; }
.skip:focus { top: 12px; }

/* Aurora */
.aurora { position: fixed; inset: -20vmax; z-index: -1; pointer-events: none; filter: blur(70px); }
.aurora span { position: absolute; width: 60vmax; height: 60vmax; border-radius: 50%; }
.aurora span:nth-child(1) { background: radial-gradient(closest-side, var(--aurora-a), transparent); left: 45%; top: 5%; animation: drift1 22s ease-in-out infinite alternate; }
.aurora span:nth-child(2) { background: radial-gradient(closest-side, var(--aurora-b), transparent); left: 15%; top: 35%; animation: drift2 28s ease-in-out infinite alternate; }
.aurora span:nth-child(3) { background: radial-gradient(closest-side, var(--aurora-c), transparent); left: 55%; top: 55%; animation: drift3 34s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(-18vmax, 10vmax) scale(1.15); } }
@keyframes drift2 { to { transform: translate(20vmax, -12vmax) scale(0.9); } }
@keyframes drift3 { to { transform: translate(-10vmax, -18vmax) scale(1.2); } }
body::before { /* fine grain so gradients don't band */
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Glass */
.glass {
  background: linear-gradient(160deg, var(--glass-strong), var(--glass));
  border: 1px solid var(--glass-edge);
  box-shadow: inset 0 1px 0 var(--glass-hi), var(--shadow);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  backdrop-filter: blur(22px) saturate(160%);
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 0 26px; border-radius: 999px;
  font: 700 16px/1 var(--text); text-decoration: none; border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--lime); color: var(--lime-ink); box-shadow: 0 10px 40px -10px rgba(204, 240, 58, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.6); }
.btn-glass { background: var(--glass-strong); border-color: var(--glass-edge); color: var(--ink); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); box-shadow: inset 0 1px 0 var(--glass-hi); }
.btn-small { min-height: 42px; padding: 0 16px; font-size: 14px; background: var(--glass-strong); border-color: var(--glass-edge); color: var(--ink); }
.gh { width: 18px; height: 18px; fill: currentColor; }
.icon-btn {
  width: 44px; height: 44px; border-radius: 50%; display: inline-grid; place-items: center; cursor: pointer;
  background: var(--glass-strong); border: 1px solid var(--glass-edge); color: var(--ink);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
}
.icon-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn .i-play { fill: currentColor; stroke: none; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 50; padding-top: env(safe-area-inset-top); }
.nav::before { content: ""; position: absolute; inset: 0; background: color-mix(in srgb, var(--bg) 62%, transparent); -webkit-backdrop-filter: blur(18px) saturate(160%); backdrop-filter: blur(18px) saturate(160%); border-bottom: 1px solid var(--glass-edge); }
.nav-inner { position: relative; display: flex; align-items: center; gap: 16px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 900 18px/1 var(--display); letter-spacing: 0.04em; }
.brand img { border-radius: 8px; }
.nav nav { margin-left: auto; }
.nav-links { display: none; list-style: none; margin: 0; padding: 0; gap: 4px; }
.nav-links a { display: block; padding: 8px 14px; border-radius: 999px; text-decoration: none; color: var(--ink-2); font-weight: 600; font-size: 15px; }
.nav-links a:hover { color: var(--ink); background: var(--glass-strong); }
.nav-actions { display: flex; gap: 10px; align-items: center; margin-left: auto; }
.nav nav + .nav-actions { margin-left: 0; }
.i-moon { display: none; }
:root[data-theme="light"] .i-sun { display: none; }
:root[data-theme="light"] .i-moon { display: block; }
@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) .i-sun { display: none; } :root:not([data-theme="dark"]) .i-moon { display: block; } }
@media (min-width: 860px) { .nav-links { display: flex; } }
@media (max-width: 420px) { .btn-small span { display: none; } .nav-actions .btn-small { width: 44px; padding: 0; justify-content: center; } }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 1fr); gap: 48px; padding: 56px 0 40px; align-items: center; }
@media (min-width: 960px) { .hero { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); padding: 88px 0 56px; } }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; margin: 0 0 22px; padding: 8px 16px; border-radius: 999px; font-weight: 600; font-size: 14px; color: var(--ink-2); background: var(--glass-strong); border: 1px solid var(--glass-edge); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 4px rgba(204, 240, 58, 0.2); }
h1 { font: 900 clamp(46px, 10.5vw, 112px)/0.92 var(--display); letter-spacing: -0.035em; text-transform: uppercase; }
.accent { color: var(--accent-text); }
:root:not([data-theme="light"]) .accent { background: linear-gradient(100deg, #e6ff7a, var(--lime) 45%, #9fe0c8); -webkit-background-clip: text; background-clip: text; color: transparent; }
@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) .accent { background: none; color: var(--accent-text); } }
.lede { font-size: clamp(18px, 2.2vw, 21px); color: var(--ink-2); max-width: 36ch; margin: 26px 0 32px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { margin: 26px 0 0; font-size: 14px; color: var(--ink-3); max-width: 48ch; }
.hero-note strong { color: var(--ink); }

/* Phone + carousel */
.hero-device { display: grid; justify-items: center; }
.carousel { display: grid; justify-items: center; gap: 18px; }
.phone {
  position: relative; width: min(320px, 78vw); aspect-ratio: 1179 / 2563; padding: 11px; border-radius: 54px;
  background: linear-gradient(145deg, #3a3f3b, #121513 40%, #2a2e2b);
  box-shadow: 0 0 0 1.5px rgba(255, 255, 255, 0.12) inset, 0 50px 120px -30px rgba(0, 0, 0, 0.75), 0 0 90px -20px rgba(204, 240, 58, 0.35);
  transform: perspective(1400px) rotateY(-8deg) rotateX(3deg); transition: transform 0.6s ease;
}
.phone:hover { transform: perspective(1400px) rotateY(0) rotateX(0); }
.phone-screen { position: relative; width: 100%; height: 100%; border-radius: 44px; overflow: hidden; background: #000; }
.island { position: absolute; top: 22px; left: 50%; width: 28%; height: 26px; transform: translateX(-50%); background: #000; border-radius: 20px; }
.slide { position: absolute; inset: 0; margin: 0; opacity: 0; transform: scale(1.03); transition: opacity 0.7s ease, transform 0.9s ease; }
.slide.is-active { opacity: 1; transform: none; }
.slide img { width: 100%; height: 100%; object-fit: cover; }
.carousel-ui { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 8px; max-width: 100%; }
@media (max-width: 440px) { .dots { order: -1; flex-basis: 100%; justify-content: center; gap: 2px; padding: 0; } .dots button { width: 18px; } .dots button[aria-selected="true"] { width: 30px; } }
.dots { display: flex; gap: 6px; padding: 0 6px; }
.dots button { width: 24px; height: 24px; padding: 0; border: 0; background: none; cursor: pointer; display: grid; place-items: center; }
.dots button::before { content: ""; width: 8px; height: 8px; border-radius: 99px; background: var(--ink-3); transition: width 0.3s ease, background 0.3s ease; }
.dots button[aria-selected="true"]::before { width: 22px; background: var(--lime); }
.dots button[aria-selected="true"] { width: 34px; }
#play[aria-pressed="false"] .i-play, #play[aria-pressed="true"] .i-pause { display: none; }
.caption { margin: 0; font-weight: 700; font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); }

/* Strip */
.strip ul { list-style: none; margin: 0; padding: 22px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; border-radius: var(--radius); background: var(--glass); border: 1px solid var(--glass-edge); }
@media (min-width: 760px) { .strip ul { grid-template-columns: repeat(4, 1fr); } }
.strip li { display: grid; gap: 4px; }
.strip strong { font: 900 clamp(28px, 4vw, 40px)/1 var(--display); color: var(--accent-text); }
.strip span { font-size: 14px; color: var(--ink-2); }

/* Sections */
.section { padding: 96px 0 0; }
.section-head { margin-bottom: 40px; max-width: 760px; }
.kicker { margin: 0 0 14px; font-weight: 700; font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent-text); }
.sub { color: var(--ink-2); font-size: 18px; margin: 18px 0 0; }

.grid { display: grid; gap: 16px; }
.features { grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); }
.card { position: relative; border-radius: var(--radius); padding: 26px; }
.card p { color: var(--ink-2); margin: 10px 0 0; font-size: 16px; }
.ico { width: 48px; height: 48px; border-radius: 16px; display: grid; place-items: center; margin-bottom: 18px; background: var(--lime); color: var(--lime-ink); box-shadow: 0 8px 30px -8px rgba(204, 240, 58, 0.6); }
.ico svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.features .card { transition: transform 0.3s ease, border-color 0.3s ease; }
.features .card:hover { transform: translateY(-4px); border-color: rgba(204, 240, 58, 0.45); }

/* Gallery */
.seg { display: inline-flex; margin-top: 24px; padding: 4px; border-radius: 999px; background: var(--glass-strong); border: 1px solid var(--glass-edge); }
.seg button { min-height: 40px; padding: 0 20px; border: 0; border-radius: 999px; background: none; color: var(--ink-2); font: 600 15px var(--text); cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--lime); color: var(--lime-ink); }
.gallery { display: flex; gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 10px max(16px, (100% - 1180px) / 2) 30px; scrollbar-width: thin; }
.gallery figure { flex: 0 0 auto; width: min(250px, 66vw); margin: 0; scroll-snap-align: center; }
.gallery img { border-radius: 30px; border: 1px solid var(--glass-edge); box-shadow: var(--shadow); background: #000; }
.gallery figcaption { margin-top: 12px; font-size: 14px; font-weight: 600; color: var(--ink-2); text-align: center; }
.mac { display: grid; gap: 32px; align-items: center; margin-top: 40px; }
@media (min-width: 900px) { .mac { grid-template-columns: 1fr 1.1fr; } }
.mac h3 { font: 900 clamp(26px, 3.6vw, 38px)/1.05 var(--display); text-transform: uppercase; }
.mac-copy p { color: var(--ink-2); }
.mac-shots { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.mac-shots img { border-radius: 14px; box-shadow: var(--shadow); border: 1px solid var(--glass-edge); }
.mac-shots img:last-child { transform: translateY(32px); }

/* Steps */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); counter-reset: s; }
.steps li { border-radius: var(--radius); padding: 26px; }
.steps p { color: var(--ink-2); margin: 10px 0 0; font-size: 16px; }
.num { display: block; font: 900 44px/1 var(--display); color: transparent; -webkit-text-stroke: 1.5px var(--accent-text); margin-bottom: 18px; }
.principles { list-style: none; padding: 0; margin: 28px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.principles li { padding: 10px 16px 10px 40px; border-radius: 999px; background: var(--glass); border: 1px solid var(--glass-edge); font-size: 15px; font-weight: 500; position: relative; }
.principles li::before { content: ""; position: absolute; left: 15px; top: 50%; width: 14px; height: 8px; border-left: 2.5px solid var(--accent-text); border-bottom: 2.5px solid var(--accent-text); transform: translateY(-70%) rotate(-45deg); }

/* API */
.api-cards { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); margin-bottom: 20px; }
.link-card { text-decoration: none; display: block; transition: transform 0.3s ease, border-color 0.3s ease; }
.link-card:hover { transform: translateY(-4px); border-color: rgba(204, 240, 58, 0.5); }
.link-card h3 { font: 900 24px/1.1 var(--display); margin-top: 14px; }
.tag { display: inline-block; padding: 5px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; background: var(--glass-strong); border: 1px solid var(--glass-edge); color: var(--accent-text); }
.go { position: absolute; top: 22px; right: 24px; font-size: 24px; color: var(--accent-text); transition: transform 0.3s ease; }
.link-card:hover .go { transform: translateX(4px); }

.code-block { border-radius: 22px; overflow: hidden; }
.code-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 12px 10px 20px; font-size: 13px; font-weight: 600; color: var(--ink-2); border-bottom: 1px solid var(--glass-edge); }
.copy { min-height: 34px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--glass-edge); background: var(--glass-strong); color: var(--ink); font: 600 13px var(--text); cursor: pointer; }
.copy.done { background: var(--lime); color: var(--lime-ink); }
pre { margin: 0; padding: 20px; overflow-x: auto; background: var(--code-bg); }
pre code { background: none; border: 0; padding: 0; color: #e8f0dc; font-size: 14px; line-height: 1.7; }

.tablist { display: inline-flex; gap: 4px; padding: 4px; margin-bottom: 14px; border-radius: 999px; background: var(--glass-strong); border: 1px solid var(--glass-edge); flex-wrap: wrap; }
.tablist button { min-height: 40px; padding: 0 18px; border: 0; border-radius: 999px; background: none; color: var(--ink-2); font: 600 15px var(--text); cursor: pointer; }
.tablist button[aria-selected="true"] { background: var(--lime); color: var(--lime-ink); }
.warn { margin: 18px 0 0; padding: 16px 20px; border-radius: 18px; border: 1px solid color-mix(in srgb, var(--warn) 50%, transparent); background: color-mix(in srgb, var(--warn) 10%, transparent); font-size: 15px; color: var(--ink-2); }
.warn strong { color: var(--warn); }

/* Notice */
.notice { display: grid; gap: 22px; padding: clamp(24px, 4vw, 44px); border-radius: 34px; border: 1.5px solid var(--lime);
  background: linear-gradient(135deg, rgba(204, 240, 58, 0.14), rgba(204, 240, 58, 0.03)); }
@media (min-width: 720px) { .notice { grid-template-columns: auto 1fr; } }
.notice-badge { width: 64px; height: 64px; border-radius: 20px; display: grid; place-items: center; background: var(--lime); color: var(--lime-ink); font: 900 34px/1 var(--display); }
.notice h3 { margin-top: 24px; font-size: 16px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent-text); }
.notice p { color: var(--ink-2); margin: 12px 0 0; max-width: 72ch; }
.notice p strong { color: var(--ink); }

.two-col { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }
@media (min-width: 860px) { .two-col { grid-template-columns: 1fr 1fr; } }
.two-col h2 { font-size: clamp(24px, 3vw, 32px); margin-bottom: 18px; }
.checks, .credits { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; color: var(--ink-2); font-size: 16px; }
.checks li, .credits li { padding-left: 28px; position: relative; }
.checks li::before { content: ""; position: absolute; left: 2px; top: 0.55em; width: 12px; height: 7px; border-left: 2.5px solid var(--accent-text); border-bottom: 2.5px solid var(--accent-text); transform: rotate(-45deg); }
.credits li::before { content: ""; position: absolute; left: 4px; top: 0.6em; width: 8px; height: 8px; border-radius: 50%; background: var(--accent-text); }

/* Footer */
.footer { margin-top: 110px; padding: 36px 0 calc(36px + env(safe-area-inset-bottom)); border-top: 1px solid var(--glass-edge); background: color-mix(in srgb, var(--bg) 70%, transparent); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 28px; justify-content: space-between; }
.footer p { margin: 0; color: var(--ink-3); font-size: 14px; flex: 1 1 320px; }

/* Reveal */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.8s cubic-bezier(.2,.7,.2,1), transform 0.8s cubic-bezier(.2,.7,.2,1); }
.js .reveal[data-delay="1"] { transition-delay: 0.15s; }
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .aurora span { animation: none; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .phone, .phone:hover { transform: none; transition: none; }
  .slide { transition: none; transform: none; }
  .btn:hover, .features .card:hover, .link-card:hover { transform: none; }
}