:root {
  --ink: #0c1b2a;
  --ink-soft: #415468;
  --paper: #e8eef3;
  --paper-2: #d7e0e9;
  --sea: #0d8f86;
  --sea-deep: #0a5f5a;
  --citrus: #ffb703;
  --coral: #2b6cb0;
  --mist: rgba(12, 27, 42, 0.06);
  --line: rgba(12, 27, 42, 0.12);
  --radius: 14px;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --shadow: 0 18px 50px rgba(12, 27, 42, 0.14);
  --wrap: 1100px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(13, 143, 134, 0.16), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(43, 108, 176, 0.14), transparent 50%),
    linear-gradient(180deg, #f2f6f9 0%, var(--paper) 42%, #dce5ee 100%);
  min-height: 100vh;
  line-height: 1.55;
}

img { max-width: 100%; display: block; }
a { color: var(--sea); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--sea-deep); }

.wrap {
  width: min(var(--wrap), calc(100% - 2.5rem));
  margin-inline: auto;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 1rem; top: -3rem; background: var(--ink); color: #fff;
  padding: 0.6rem 1rem; z-index: 100; border-radius: 8px;
}
.skip-link:focus { top: 1rem; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(232, 238, 243, 0.86);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.85rem 0;
}

.brand {
  display: flex; align-items: center; gap: 0.75rem;
  text-decoration: none; color: inherit;
}

.brand-mark {
  width: 2.5rem; height: 2.5rem; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, var(--sea), var(--sea-deep));
  color: #f7f3eb; font-family: var(--font-display); font-size: 1.25rem;
  box-shadow: 0 8px 20px rgba(15, 92, 76, 0.28);
}

.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong {
  font-family: var(--font-display); font-weight: 700; font-size: 1.15rem;
}
.brand-text span { font-size: 0.78rem; color: var(--ink-soft); }

.site-nav {
  display: flex; flex-wrap: wrap; gap: 0.35rem 1.1rem;
}
.site-nav a {
  text-decoration: none; color: var(--ink-soft); font-weight: 600; font-size: 0.95rem;
}
.site-nav a:hover { color: var(--sea); }

.nav-toggle {
  display: none; background: transparent; border: 0; cursor: pointer;
  width: 2.5rem; height: 2.5rem; position: relative;
}
.nav-toggle span {
  position: absolute; left: 0.55rem; right: 0.55rem; height: 2px;
  background: var(--ink); transition: 0.2s ease;
}
.nav-toggle span:first-of-type { top: 0.95rem; }
.nav-toggle span:last-of-type { top: 1.4rem; }

/* Hero */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: min(92vh, 760px);
  display: grid;
  align-items: end;
  padding: 4rem 0 3.5rem;
  color: #f4f0e7;
}

.hero::before {
  content: "";
  position: absolute; inset: 0; z-index: -2;
  background:
    linear-gradient(115deg, rgba(8, 24, 40, 0.94) 0%, rgba(10, 70, 72, 0.78) 48%, rgba(12, 40, 70, 0.55) 100%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"),
    linear-gradient(160deg, #0a2a3a, #0d5c58 42%, #1d4e89 130%);
  background-size: cover, 60px 60px, cover;
  animation: heroShift 18s ease-in-out infinite alternate;
}

@keyframes heroShift {
  from { filter: saturate(1) hue-rotate(0deg); }
  to { filter: saturate(1.08) hue-rotate(-6deg); }
}

.hero-copy { max-width: 38rem; }
.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 4.6rem);
  line-height: 0.98;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
  animation: riseIn 0.8s ease both;
}
.hero-lead {
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  color: rgba(244, 240, 231, 0.88);
  margin: 0 0 1.75rem;
  max-width: 32rem;
  animation: riseIn 0.8s ease 0.12s both;
}
.hero-actions {
  display: flex; flex-wrap: wrap; gap: 0.75rem;
  animation: riseIn 0.8s ease 0.22s both;
}

@keyframes riseIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.4rem; border-radius: 999px; padding: 0.85rem 1.35rem;
  font-weight: 700; text-decoration: none; border: 2px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--citrus); color: var(--ink); }
.btn-primary:hover { background: #f0b53a; color: var(--ink); }
.btn-ghost { background: transparent; color: #f4f0e7; border-color: rgba(244,240,231,0.45); }
.btn-ghost:hover { background: rgba(244,240,231,0.1); color: #fff; }
.btn-sea { background: var(--sea); color: #f4f0e7; }
.btn-sea:hover { background: var(--sea-deep); color: #fff; }
.btn-outline {
  background: transparent; color: var(--sea-deep);
  border-color: rgba(15, 92, 76, 0.35);
}
.btn-outline:hover { background: rgba(15, 92, 76, 0.08); color: var(--sea-deep); }

/* Sections */
.section { padding: 4rem 0; }
.section- Tight { padding: 2.5rem 0; }
.section-head { margin-bottom: 1.75rem; max-width: 40rem; }
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin: 0 0 0.5rem; letter-spacing: -0.02em; line-height: 1.15;
}
.section-head p { margin: 0; color: var(--ink-soft); font-size: 1.05rem; }

.eyebrow {
  display: inline-block; font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--coral);
  margin-bottom: 0.5rem;
}

.panel {
  background: rgba(255, 252, 245, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
}

.lang-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.85rem;
}

.lang-tile {
  display: block; text-decoration: none; color: inherit;
  background: rgba(255, 252, 245, 0.85);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.05rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.lang-tile:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: rgba(15, 92, 76, 0.35);
  color: inherit;
}
.lang-tile strong {
  display: block; font-family: var(--font-display); font-size: 1.15rem;
}
.lang-tile .native { color: var(--ink-soft); font-size: 0.92rem; }
.lang-tile .tier {
  margin-top: 0.55rem; font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--sea);
}

.split {
  display: grid; gap: 1.5rem;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: start;
}

.path-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.75rem; }
.path-list a {
  display: block; text-decoration: none; color: inherit;
  padding: 1rem 1.1rem; border-radius: var(--radius);
  background: rgba(255,252,245,0.85); border: 1px solid var(--line);
}
.path-list a:hover { border-color: rgba(15,92,76,0.4); }
.path-list strong { display: block; font-family: var(--font-display); font-size: 1.1rem; }
.path-list span { color: var(--ink-soft); font-size: 0.95rem; }

.resource-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.resource-table th, .resource-table td {
  text-align: left; padding: 0.75rem 0.6rem;
  border-bottom: 1px solid var(--line); vertical-align: top;
}
.resource-table th {
  font-size: 0.75rem; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--ink-soft);
}
.badge {
  display: inline-block; padding: 0.15rem 0.45rem; border-radius: 999px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em;
  text-transform: uppercase; background: var(--mist); color: var(--ink-soft);
}
.badge-free { background: rgba(15,92,76,0.12); color: var(--sea-deep); }
.badge-paid { background: rgba(196,75,47,0.12); color: var(--coral); }

.page-hero {
  padding: 3rem 0 1.5rem;
}
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3rem);
  margin: 0 0 0.6rem; letter-spacing: -0.02em; line-height: 1.1;
}
.page-hero p { margin: 0; max-width: 40rem; color: var(--ink-soft); font-size: 1.1rem; }

.breadcrumbs {
  display: flex; flex-wrap: wrap; gap: 0.35rem; font-size: 0.88rem;
  color: var(--ink-soft); margin-bottom: 0.85rem;
}
.breadcrumbs a { color: var(--sea); text-decoration: none; }
.breadcrumbs span[aria-hidden] { opacity: 0.5; }

.prose { max-width: 42rem; }
.prose h2 { font-family: var(--font-display); margin-top: 2rem; }
.prose p, .prose li { color: var(--ink-soft); }
.prose strong { color: var(--ink); }

.tool-shell {
  background: #0f2420; color: #e9e4d8; border-radius: 18px;
  padding: 1.25rem; box-shadow: var(--shadow);
}
.tool-shell input {
  width: 100%; padding: 0.85rem 1rem; border-radius: 10px;
  border: 1px solid rgba(233,228,216,0.2); background: rgba(255,255,255,0.06);
  color: #e9e4d8; font: inherit; font-size: 1.05rem;
}
.tool-shell input:focus { outline: 2px solid var(--citrus); outline-offset: 2px; }
.family-tree { margin-top: 1.25rem; display: grid; gap: 0.65rem; }
.family-node {
  display: grid; grid-template-columns: 1fr auto; gap: 0.5rem;
  padding: 0.85rem 1rem; border-radius: 12px;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.08);
}
.family-node .word { font-family: var(--font-display); font-size: 1.15rem; }
.family-node .gloss { color: rgba(233,228,216,0.72); font-size: 0.92rem; }
.cognate-row { margin-top: 1rem; font-size: 0.92rem; color: rgba(233,228,216,0.8); }
.cognate-row strong { color: var(--citrus); }

.counter-strip {
  display: flex; flex-wrap: wrap; gap: 1rem 2rem;
  padding: 1.1rem 1.25rem; border-radius: var(--radius);
  background: linear-gradient(90deg, rgba(13,143,134,0.14), rgba(43,108,176,0.12));
  border: 1px solid var(--line);
}
.counter-strip strong {
  display: block; font-family: var(--font-display); font-size: 1.6rem; line-height: 1;
}
.counter-strip span { font-size: 0.85rem; color: var(--ink-soft); }

.site-footer {
  margin-top: 3rem; padding: 3rem 0 2rem;
  background: #0a1622; color: rgba(232, 238, 243, 0.82);
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem;
}
.footer-brand {
  font-family: var(--font-display); font-size: 1.35rem; color: #e8eef3; margin: 0 0 0.4rem;
}
.footer-tag { margin: 0; max-width: 22rem; }
.footer-label {
  font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: rgba(244,240,231,0.55); margin: 0 0 0.6rem;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 0.35rem; }
.site-footer a { color: #e8eef3; text-decoration: none; }
.site-footer a:hover { color: var(--citrus); }
.footer-meta {
  margin-top: 2rem; padding-top: 1rem; border-top: 1px solid rgba(232,238,243,0.12);
  font-size: 0.88rem; color: rgba(232,238,243,0.55);
}
.footer-meta code { color: var(--citrus); }

.trainer-controls {
  display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center;
}
.trainer-controls select {
  padding: 0.65rem 0.85rem; border-radius: 10px;
  border: 1px solid rgba(233,228,216,0.2); background: rgba(255,255,255,0.06);
  color: #e9e4d8; font: inherit;
}
.script-glyph {
  font-size: clamp(3.5rem, 12vw, 6rem);
  line-height: 1.1; text-align: center;
  margin: 0.75rem 0 1rem;
  font-family: "Noto Sans Cherokee", "Noto Sans", var(--font-display), sans-serif;
  color: #ffb703;
  min-height: 1.2em;
}
.feedback-ok { color: #6ddebd !important; }
.feedback-bad { color: #ff8f7a !important; }
.vocab-choices {
  display: grid; gap: 0.55rem;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}
.vocab-choice { width: 100%; justify-content: center; }
.choice-ok { border-color: #6ddebd !important; color: #6ddebd !important; }
.choice-bad { border-color: #ff8f7a !important; color: #ff8f7a !important; }

@media (max-width: 820px) {
  .split, .footer-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; gap: 0;
    background: rgba(242, 246, 249, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 1.25rem 1rem;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 0.65rem 0; border-bottom: 1px solid var(--line); }
  .header-inner { position: relative; }
}