:root {
  --bg: #f4f1ea;
  --bg2: #ebe6dc;
  --ink: #1c1917;
  --muted: #6f6860;
  --card: #ffffff;
  --line: rgba(28, 25, 23, 0.1);
  --accent: #0f766e;
  --accent-2: #115e59;
  --accent-soft: #ccfbf1;
  --danger: #b91c1c;
  --ok: #047857;
  --top-bg: rgba(244, 241, 234, 0.88);
  --shadow: 0 12px 32px rgba(28, 25, 23, 0.08);
  --google-bg: #fff;
  --font: "DM Sans", system-ui, sans-serif;
  --display: "Instrument Serif", Georgia, serif;
}

html[data-theme="dark"] {
  --bg: #0f1412;
  --bg2: #161c19;
  --ink: #f5f5f4;
  --muted: #a8a29e;
  --card: #1a221f;
  --line: rgba(245, 245, 244, 0.1);
  --accent: #2dd4bf;
  --accent-2: #5eead4;
  --accent-soft: rgba(45, 212, 191, 0.14);
  --danger: #f87171;
  --ok: #34d399;
  --top-bg: rgba(15, 20, 18, 0.9);
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  --google-bg: #24302c;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background:
    radial-gradient(ellipse 55% 42% at 100% 0%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 55%),
    radial-gradient(ellipse 40% 30% at 0% 100%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 50%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.55;
  cursor: default;
  caret-color: transparent;
  user-select: none;
  transition: background .25s, color .2s;
}
input, textarea, select { user-select: text; caret-color: var(--accent); cursor: text; font: inherit; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
button { font: inherit; cursor: pointer; }

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: .9rem 1.35rem;
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  background: var(--top-bg);
  border-bottom: 1px solid var(--line);
  z-index: 20;
}
.brand {
  font-family: var(--display);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}
.brand:hover { color: var(--ink); }
.top nav { display: flex; gap: .85rem; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.top nav a { color: var(--muted); font-size: .9rem; }
.top nav a:hover { color: var(--ink); }
.theme-btn {
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  display: inline-grid;
  place-items: center;
  font-size: 1rem;
  transition: transform .15s, border-color .15s;
}
.theme-btn:hover { transform: translateY(-1px); border-color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  border: none;
  border-radius: 999px;
  padding: .75rem 1.2rem;
  background: var(--ink);
  color: var(--bg);
  font-weight: 600;
  transition: transform .15s, background .15s, box-shadow .2s, opacity .15s;
}
html[data-theme="dark"] .btn { color: #0f1412; }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-sm { padding: .45rem .9rem; font-size: .88rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-google {
  background: var(--google-bg);
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-github {
  background: #111827;
  color: #f9fafb;
  border: 1px solid transparent;
}
html[data-theme="dark"] .btn-github {
  background: #f9fafb;
  color: #111827;
}
.btn-google svg,
.btn-github svg {
  width: 18px !important;
  height: 18px !important;
  max-width: 18px;
  max-height: 18px;
  flex-shrink: 0;
  display: block;
}

.hero {
  width: min(100% - 2rem, 960px);
  margin: 3.5rem auto 2.5rem;
  animation: rise .55s ease both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .72rem;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: .85rem;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.5rem, 7vw, 4.3rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.hero h1 em { font-style: italic; color: var(--accent); }
.lead { color: var(--muted); font-size: 1.08rem; max-width: 36rem; margin-bottom: 1.5rem; }
.cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 2.4rem; }
.hero-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 860px) { .hero-cards { grid-template-columns: 1fr; } }
.hero-cards article, .card, .price-card, .auth, .legal {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.25rem;
  box-shadow: var(--shadow);
}
.hero-cards h3 { font-size: 1rem; margin-bottom: .35rem; }
.hero-cards p { color: var(--muted); font-size: .92rem; }

.wrap { width: min(100% - 2rem, 1040px); margin: 2rem auto 3rem; animation: rise .45s ease both; }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .85rem; word-break: break-all; }
.err { color: var(--danger); }
.ok { color: var(--ok); }
.dev { background: var(--accent-soft); padding: .75rem 1rem; border-radius: 12px; margin: .75rem 0; }
.note {
  background: var(--accent-soft);
  border: 1px dashed color-mix(in srgb, var(--accent) 40%, transparent);
  border-radius: 12px;
  padding: .85rem 1rem;
  font-size: .88rem;
  color: var(--muted);
  margin: .75rem 0 1rem;
}

.auth {
  width: min(100% - 2rem, 440px);
  margin: 3rem auto;
  animation: rise .45s ease both;
}
.auth h1 { font-family: var(--display); font-size: 2.2rem; margin-bottom: 1rem; }
.stack { display: grid; gap: .85rem; }
.stack label { display: grid; gap: .35rem; font-size: .85rem; color: var(--muted); }
.stack input, .row-form input, .row-form select {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: .7rem .8rem;
  background: color-mix(in srgb, var(--card) 80%, var(--bg));
  color: var(--ink);
  outline: none;
}
.stack input:focus, .row-form input:focus, .row-form select:focus {
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.or { text-align: center; color: var(--muted); font-size: .85rem; margin: .85rem 0; }

.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}
.price-card.featured {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  outline: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
}
.price { font-family: var(--display); font-size: 2.4rem; margin: .5rem 0; }
.price span { font-family: var(--font); font-size: .9rem; color: var(--muted); }
.price-card ul { list-style: none; display: grid; gap: .4rem; margin: 1rem 0 1.25rem; color: var(--muted); font-size: .92rem; }

.app-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.app-head h1, .legal h1, .wrap > h1 { font-family: var(--display); font-size: clamp(2rem, 4vw, 2.6rem); }
.card { margin-bottom: 1rem; }
.card h2 { font-size: 1.05rem; margin-bottom: .85rem; }
.row-form {
  display: grid;
  grid-template-columns: 1.2fr 1.8fr .8fr auto;
  gap: .75rem;
  align-items: end;
}
@media (max-width: 800px) { .row-form { grid-template-columns: 1fr; } }
.row-form label { display: grid; gap: .3rem; font-size: .8rem; color: var(--muted); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: .65rem .4rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
.badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  padding: .15rem .45rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--muted) 18%, transparent);
}
.badge.up { background: color-mix(in srgb, var(--ok) 22%, transparent); color: var(--ok); }
.badge.down { background: color-mix(in srgb, var(--danger) 22%, transparent); color: var(--danger); }
.inline { display: inline; }
.linkish {
  background: none;
  border: none;
  color: var(--accent);
  padding: 0 .35rem;
  font-size: .85rem;
}
.linkish.danger { color: var(--danger); }

.legal { margin-top: 1rem; }
.legal h2 { font-size: 1.15rem; margin: 1.4rem 0 .55rem; }
.legal p, .legal li { color: var(--muted); margin-bottom: .65rem; }
.legal ul { padding-left: 1.15rem; margin-bottom: 1rem; }
.legal a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

.foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem 1.5rem 2.5rem;
  color: var(--muted);
  font-size: .85rem;
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  flex-wrap: wrap;
}
.foot-links { display: flex; gap: .9rem; flex-wrap: wrap; }
.foot-links a { color: var(--muted); }
.foot-links a:hover { color: var(--accent); }
.flash {
  background: var(--accent-soft);
  color: var(--accent-2);
  text-align: center;
  padding: .65rem;
  font-size: .9rem;
}
html[data-theme="dark"] .flash { color: var(--accent); }