/* ============================================================
   Topmarks — marketing site
   Liquid-glass aesthetic over a rotating Unsplash wallpaper.
   ============================================================ */

/* ---------- Font (self-hosted Inter, latin variable woff2) ---------- */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("assets/fonts/inter-latin.woff2") format("woff2");
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 8px; }

/* ---------- Tokens ---------- */
:root {
  --font: "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

  /* indigo -> violet brand, lifted from the extension icon */
  --accent: #6366f1;
  --accent-2: #a855f7;
  --accent-grad: linear-gradient(120deg, #6366f1 0%, #a855f7 100%);

  /* light theme (default) */
  --ink: #15161a;
  --ink-soft: rgba(21, 22, 26, 0.62);
  --ink-faint: rgba(21, 22, 26, 0.42);
  --page: #eef0f4;
  --page-2: #e4e7ee;
  --hair: rgba(21, 22, 26, 0.10);

  --glass: rgba(255, 255, 255, 0.58);
  --glass-strong: rgba(255, 255, 255, 0.74);
  --glass-hair: rgba(255, 255, 255, 0.65);
  --glass-shadow: 0 16px 50px rgba(13, 16, 28, 0.18);
  --blur: blur(26px) saturate(150%);

  --card: rgba(255, 255, 255, 0.72);
  --card-hair: rgba(21, 22, 26, 0.07);
  --solid: #f3f4f8; /* opaque surface for Classic */

  --radius: 22px;
  --radius-pill: 999px;
  --maxw: 1180px;
}

html[data-theme="dark"] {
  --ink: #f3f4f7;
  --ink-soft: rgba(243, 244, 247, 0.68);
  --ink-faint: rgba(243, 244, 247, 0.45);
  --page: #0b0c10;
  --page-2: #101218;
  --hair: rgba(255, 255, 255, 0.10);

  --glass: rgba(24, 25, 32, 0.52);
  --glass-strong: rgba(24, 25, 32, 0.74);
  --glass-hair: rgba(255, 255, 255, 0.14);
  --glass-shadow: 0 16px 50px rgba(0, 0, 0, 0.5);

  --card: rgba(24, 26, 34, 0.66);
  --card-hair: rgba(255, 255, 255, 0.09);
  --solid: #181a21;
}

html { background: #0b0c10; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: transparent;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
  overflow-x: hidden;
}

/* ---------- Glass surface ---------- */
.glass {
  background: var(--glass);
  border: 1px solid var(--glass-hair);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  box-shadow: var(--glass-shadow);
}
/* Classic style: no blur, fully solid, squarer */
html[data-style="classic"] .glass {
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  background: var(--solid);
}
/* The hero's over-the-photo frosted elements don't use .glass, so Classic must
   flatten them too — and make them follow the theme instead of staying
   translucent/white. The explicit .soon/:hover selectors out-specify the base
   .btn-ghost.soon:hover rule so the Chrome button doesn't keep its tint. */
html[data-style="classic"] .eyebrow,
html[data-style="classic"] .attribution,
html[data-style="classic"] .hero .btn-ghost,
html[data-style="classic"] .hero .btn-ghost.soon,
html[data-style="classic"] .hero .btn-ghost.soon:hover {
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  background: var(--solid);
  border-color: var(--hair);
  color: var(--ink);
}
html[data-style="classic"] .eyebrow { color: var(--ink-soft); }
html[data-style="classic"] .attribution a { color: var(--ink); }
html[data-style="classic"] .hero .btn .tag-soon { background: var(--hair); color: var(--ink-soft); }

/* ============================================================
   WALLPAPER (fixed, behind everything)
   ============================================================ */
.wallpaper {
  position: fixed;
  inset: 0;
  z-index: -2;
  /* rich brand mesh as the always-present fallback under photos */
  background:
    radial-gradient(900px 700px at 12% 8%, rgba(99,102,241,0.85), transparent 60%),
    radial-gradient(800px 800px at 88% 18%, rgba(168,85,247,0.7), transparent 60%),
    radial-gradient(900px 700px at 70% 95%, rgba(56,189,248,0.45), transparent 55%),
    linear-gradient(140deg, #1b1140 0%, #2a1a52 45%, #14122e 100%);
}
.wallpaper .layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1400ms ease;
}
.wallpaper .layer.is-active { opacity: 1; }
/* legibility scrims for hero text */
.wallpaper::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8,10,18,0.55) 0%, rgba(8,10,18,0.18) 42%, rgba(8,10,18,0) 70%),
    linear-gradient(180deg, rgba(8,10,18,0.28) 0%, rgba(8,10,18,0) 22%, rgba(8,10,18,0) 70%, rgba(8,10,18,0.30) 100%);
}

/* ============================================================
   FLOATING BOOKMARK BAR (the product, live)
   ============================================================ */
.bar-wrap {
  position: fixed;
  top: 18px; left: 0; right: 0;
  z-index: 40;
  display: flex;
  justify-content: center;
  padding: 0 18px;
  pointer-events: none;
}
.bar {
  pointer-events: auto;
  width: min(1180px, 100%);
  border-radius: var(--radius-pill);
  padding: 9px 16px;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--ink);
}
html[data-style="classic"] .bar-wrap { top: 0; padding: 0; }
html[data-style="classic"] .bar {
  width: 100%;
  border-radius: 0;
  border-left: none; border-right: none; border-top: none;
  padding: 12px 26px;
  box-shadow: none;
}

.bm {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  position: relative;
  transition: background 140ms ease, opacity 140ms ease;
}
html[data-style="classic"] .bm { border-radius: 8px; }
.bm:hover { background: var(--hair); }
.bm svg { width: 15px; height: 15px; opacity: 0.78; flex: none; }
.bm .fav { width: 14px; height: 14px; border-radius: 4px; flex: none; }
.bm .chev { width: 11px; height: 11px; opacity: 0.5; margin-left: 1px; }
.bar .brand-mini {
  margin-right: auto;
  display: flex; align-items: center; gap: 8px;
  padding-left: 4px; font-weight: 700; letter-spacing: -0.01em;
}
.bar .brand-mini img { width: 22px; height: 22px; border-radius: 6px; }

/* folder dropdown */
.bm-folder > .menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 208px;
  padding: 8px;
  border-radius: 16px;
  display: grid;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 150ms ease, transform 150ms ease, visibility 150ms;
  z-index: 5;
}
.bm-folder:hover > .menu { opacity: 1; visibility: visible; transform: translateY(0); }
.menu a {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 10px; border-radius: 10px;
  font-size: 13.5px; color: var(--ink);
}
.menu a:hover { background: var(--hair); }
.menu a .fav { width: 15px; height: 15px; border-radius: 4px; }
.menu .spacer { height: 1px; background: var(--hair); margin: 5px 4px; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 132px clamp(20px, 6vw, 96px) 120px;
  position: relative;
}
.hero-inner { max-width: 680px; color: #fff; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(255,255,255,0.86);
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.22);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  margin-bottom: 26px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: #37d964; box-shadow: 0 0 0 4px rgba(55,217,100,0.25); }
.hero h1 {
  font-size: clamp(40px, 6.4vw, 76px);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.025em;
  margin: 0 0 22px;
  text-wrap: balance;
  text-shadow: 0 2px 28px rgba(0,0,0,0.4);
}
.hero h1 .grad {
  color: #fff;
}
.hero .lede {
  font-size: clamp(17px, 2.1vw, 21px);
  color: rgba(255,255,255,0.9);
  max-width: 540px;
  margin: 0 0 36px;
  text-shadow: 0 1px 16px rgba(0,0,0,0.35);
}
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  border-radius: var(--radius-pill);
  font-weight: 600; font-size: 15.5px;
  transition: transform 140ms ease, box-shadow 140ms ease, opacity 140ms ease, background 140ms ease;
}
.btn svg { width: 19px; height: 19px; }
.btn img { width: 20px; height: 20px; object-fit: contain; }
.btn-primary {
  background: #fff; color: #15161a;
  box-shadow: 0 10px 34px rgba(0,0,0,0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 42px rgba(0,0,0,0.34); }
/* In Glass mode the hero's two store buttons share the same frosted background,
   so the Firefox primary drops its solid white in favour of the ghost look. */
html[data-style="glass"] .hero .btn-primary {
  background: rgba(255,255,255,0.13);
  border: 1px solid rgba(255,255,255,0.28);
  color: #fff;
  box-shadow: none;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
html[data-style="glass"] .hero .btn-primary:hover {
  background: rgba(255,255,255,0.22);
  transform: none;
  box-shadow: none;
}
.btn-ghost {
  background: rgba(255,255,255,0.13);
  border: 1px solid rgba(255,255,255,0.28);
  color: #fff;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.btn-ghost:hover { background: rgba(255,255,255,0.22); }
.btn-ghost.soon { opacity: 0.72; cursor: default; }
.btn-ghost.soon:hover { background: rgba(255,255,255,0.13); transform: none; }
.btn .tag-soon {
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.06em;
  padding: 2px 7px; border-radius: 999px;
  background: rgba(255,255,255,0.22); text-transform: uppercase;
}
.hero-meta {
  margin-top: 22px;
  display: flex; flex-wrap: wrap; gap: 8px 18px;
  font-size: 13px; color: rgba(255,255,255,0.82);
}
.hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
.hero-meta svg { width: 14px; height: 14px; opacity: 0.9; }

/* attribution (bottom-left) + controls (bottom-right) */
.attribution {
  position: absolute; left: clamp(20px, 6vw, 96px); bottom: 50px; z-index: 35;
  font-size: 12px; color: #fff;
  padding: 7px 13px; border-radius: var(--radius-pill);
  background: rgba(8,10,18,0.34);
  border: 1px solid rgba(255,255,255,0.16);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  display: flex; gap: 8px; align-items: center;
}
.attribution a { font-weight: 500; }
.attribution .sep { opacity: 0.6; font-size: 1.35em; line-height: 0; }
.attribution a:hover { opacity: 0.8; text-decoration: underline; }

.demo-controls {
  position: fixed; right: 18px; bottom: 50px; z-index: 35;
  display: flex; gap: 10px; align-items: center;
  padding: 8px;
  border-radius: var(--radius-pill);
}
.seg {
  display: flex; align-items: center;
  background: var(--hair);
  border-radius: var(--radius-pill);
  padding: 3px;
  gap: 2px;
}
.seg button {
  font-size: 12.5px; font-weight: 600;
  padding: 6px 13px; border-radius: var(--radius-pill);
  color: var(--ink-soft);
  display: inline-flex; align-items: center; gap: 6px;
  transition: background 140ms, color 140ms;
}
.seg button svg { width: 14px; height: 14px; }
.seg button[aria-pressed="true"] {
  background: var(--glass-strong);
  color: var(--ink);
  box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}
.demo-controls .lab { font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); padding-left: 6px; }

/* scroll hint */
.scroll-hint {
  position: absolute; left: 50%; bottom: 54px; transform: translateX(-50%);
  color: rgba(255,255,255,0.7); z-index: 5;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  animation: bob 2.4s ease-in-out infinite;
}
.scroll-hint svg { width: 18px; height: 18px; }
@keyframes bob { 0%,100% { transform: translate(-50%,0); } 50% { transform: translate(-50%,6px); } }

/* ============================================================
   CONTENT SURFACE (below the fold)
   ============================================================ */
.surface {
  position: relative;
  z-index: 2;
  background: var(--page);
  border-radius: 36px 36px 0 0;
  margin-top: -36px;
}
.section { max-width: var(--maxw); margin: 0 auto; padding: clamp(72px, 9vw, 128px) clamp(20px, 6vw, 64px); }
.section-head { max-width: 720px; margin-bottom: 56px; }
.kicker {
  font-size: 12px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 16px;
}
html[data-theme="dark"] .kicker { color: #a78bfa; }
.section h2 {
  font-size: clamp(30px, 4.2vw, 48px); font-weight: 800;
  letter-spacing: -0.025em; line-height: 1.06; margin: 0 0 18px; text-wrap: balance;
}
.section h2 .grad { background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.section .sub { font-size: clamp(16px,1.9vw,19px); color: var(--ink-soft); margin: 0; max-width: 600px; }

/* ---------- Styles split (Glass vs Classic) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.shot {
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--card-hair);
  background: var(--card);
  box-shadow: var(--glass-shadow);
}
.shot img { width: 100%; height: auto; display: block; }
.shot .cap {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; gap: 12px;
}
.shot .cap b { font-weight: 700; font-size: 15px; }
.shot .cap span { font-size: 13px; color: var(--ink-soft); }
.shot .cap .pin {
  font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px; background: var(--hair); color: var(--ink-soft);
}

/* ---------- Features grid ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feat {
  background: var(--card);
  border: 1px solid var(--card-hair);
  border-radius: var(--radius);
  padding: 30px 28px;
  box-shadow: 0 8px 30px rgba(13,16,28,0.06);
  transition: transform 160ms ease;
}
html[data-theme="dark"] .feat { box-shadow: none; }
.feat:hover { transform: translateY(-3px); }
.feat .ico {
  width: 46px; height: 46px; border-radius: 13px;
  display: grid; place-items: center; margin-bottom: 20px;
  background: var(--accent-grad); color: #fff;
}
.feat .ico svg { width: 23px; height: 23px; }
.feat h3 { font-size: 18.5px; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 9px; }
.feat p { font-size: 14.5px; color: var(--ink-soft); margin: 0; }

/* ---------- Gallery band (wallpaper shows through) ---------- */
.band { position: relative; z-index: 2; }
.band-inner {
  background: var(--page-2);
  padding: clamp(64px,8vw,110px) 0;
}
.gallery {
  display: flex; gap: 24px; overflow-x: auto;
  scroll-snap-type: x mandatory; scroll-behavior: smooth;
  padding: 8px clamp(20px,6vw,64px) 24px;
  scrollbar-width: none;
}
.gallery::-webkit-scrollbar { display: none; }
.gallery figure {
  flex: 0 0 min(760px, 82vw);
  scroll-snap-align: center; margin: 0;
}
.gallery img {
  width: 100%; border-radius: 16px;
  border: 1px solid var(--card-hair);
  box-shadow: var(--glass-shadow);
}
.gallery figcaption {
  margin-top: 12px; font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-soft); text-align: center;
}

/* ---------- Privacy band ---------- */
.privacy { text-align: center; }
.privacy .shield {
  width: 64px; height: 64px; border-radius: 18px; margin: 0 auto 26px;
  display: grid; place-items: center; background: var(--accent-grad); color: #fff;
}
.privacy .shield svg { width: 30px; height: 30px; }
.privacy h2 { margin-bottom: 18px; }
.privacy .sub { margin: 0 auto; }
.privacy .chips {
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 36px;
}
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--card-hair);
  font-size: 14px; font-weight: 500;
}
.chip svg { width: 16px; height: 16px; color: var(--accent); }
html[data-theme="dark"] .chip svg { color: #a78bfa; }

/* ---------- Final CTA ---------- */
.final {
  text-align: center;
  background: var(--accent-grad);
  border-radius: 30px;
  padding: clamp(56px,7vw,92px) clamp(24px,5vw,64px);
  color: #fff;
  position: relative; overflow: hidden;
}
.final::after {
  content: ""; position: absolute; right: -80px; bottom: -120px;
  width: 360px; height: 360px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.22), transparent 65%);
}
.final h2 { color: #fff; }
.final .sub { color: rgba(255,255,255,0.88); margin: 0 auto 34px; }
.final .cta-row { justify-content: center; position: relative; z-index: 1; }
.final .btn-primary { background: #fff; color: #4f46e5; }
.final .btn-ghost { background: rgba(255,255,255,0.16); border-color: rgba(255,255,255,0.4); }

/* ---------- Footer ---------- */
footer.foot {
  position: relative; z-index: 2;
  background: var(--page);
  border-top: 1px solid var(--hair);
}
.foot-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 44px clamp(20px,6vw,64px);
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.foot-brand { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.foot-brand img { width: 30px; height: 30px; border-radius: 8px; }
.foot-links { display: flex; gap: 24px; flex-wrap: wrap; font-size: 14px; }
.foot-links a { color: var(--ink-soft); }
.foot-links a:hover { color: var(--ink); }
.foot-credit { font-size: 13px; color: var(--ink-faint); width: 100%; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .features { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; }
  .demo-controls .lab { display: none; }
  .bar .bm-site { display: none; } /* hide loose sites on small bars */
}
@media (max-width: 620px) {
  .features { grid-template-columns: 1fr; }
  .bar .bm-folder span.label,
  .bar .brand-mini span { font-size: 13px; }
  .demo-controls { padding: 6px; gap: 6px; }
  .seg button { padding: 6px 10px; }
  .hero { padding-top: 110px; }
  .attribution { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  .wallpaper .layer { transition: none; }
}