/* ===== SAOF Mastery Engine — gold / coral / teal, light + dark ===== */
:root {
  --bg: #f7f3ea;
  --ambient: rgba(247, 243, 234, 0.84);
  --panel: #fffdf8;
  --panel-2: #fbf6ec;
  --panel-glass: rgba(255, 253, 248, 0.82);
  --border: #e9e0cf;
  --border-strong: #ddd0b6;
  --text: #232f37;
  --muted: #66707b;
  --faint: #93999f;

  --teal: #0e9aa0;
  --teal-ink: #0a6f74;
  --teal-soft: #e0f3f3;
  --coral: #f0654f;
  --coral-ink: #cf4632;
  --coral-soft: #fce8e2;
  --gold: #c9a227;
  --gold-ink: #9b7a12;
  --gold-soft: #f3e9cd;

  --s-not: #cdd3da;
  --s-learning: #d9a72a;
  --s-shaky: #2bb0b6;
  --s-mastered: #18a878;

  --shadow: 0 1px 2px rgba(30, 40, 60, 0.05), 0 10px 30px rgba(30, 40, 60, 0.08);
  --radius: 16px;
  --page-img: url("/backgrounds/pages/page3.jpg");
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
  --bg: #12161b;
  --ambient: rgba(14, 18, 23, 0.82);
  --panel: #1a2027;
  --panel-2: #20272f;
  --panel-glass: rgba(26, 32, 39, 0.78);
  --border: #2b333d;
  --border-strong: #3a4450;
  --text: #eef2f6;
  --muted: #9aa5b1;
  --faint: #6f7a86;

  --teal: #2fd0cb;
  --teal-ink: #84efe9;
  --teal-soft: rgba(47, 208, 203, 0.14);
  --coral: #ff8472;
  --coral-ink: #ffb0a3;
  --coral-soft: rgba(255, 132, 114, 0.15);
  --gold: #e6c75e;
  --gold-ink: #f0dd9a;
  --gold-soft: rgba(230, 199, 94, 0.14);

  --s-not: #3b454f;
  --s-learning: #e0b53e;
  --s-shaky: #2fd0cb;
  --s-mastered: #2bd093;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body, #root { height: 100%; }
body { margin: 0; color: var(--text); -webkit-font-smoothing: antialiased; background: var(--bg); }

/* ambient photographic background from /backgrounds, washed to stay light */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -1;
  background-image: linear-gradient(var(--ambient), var(--ambient)), var(--bg-image, url("/backgrounds/bg-08.jpg"));
  background-size: cover; background-position: center; background-attachment: fixed;
  transition: background-image .4s ease;
}

h1, h2, h3 { line-height: 1.2; margin: 0 0 .4em; letter-spacing: -0.01em; }
p { line-height: 1.62; }
a { color: var(--teal-ink); }

.wrap { max-width: 940px; margin: 0 auto; padding: 26px 20px 90px; }

.topbar { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; flex-wrap: wrap; }
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand h1 { font-size: 19px; margin: 0; }
.brand .mark { color: var(--gold-ink); }
.brand .sub { color: var(--faint); font-size: 12.5px; }
.spacer { flex: 1; }

.nav { display: flex; gap: 6px; background: var(--panel-glass); border: 1px solid var(--border); border-radius: 12px; padding: 4px; backdrop-filter: blur(6px); }
.nav button { border: 0; background: transparent; color: var(--muted); font: inherit; font-weight: 600; font-size: 13.5px; padding: 7px 13px; border-radius: 9px; cursor: pointer; }
.nav button.on { background: var(--teal); color: #fff; }
[data-theme="dark"] .nav button.on { color: #08252a; }

.card {
  background: var(--panel-glass); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px;
  backdrop-filter: blur(8px);
}
.card + .card { margin-top: 18px; }
.card-gold { border-top: 3px solid var(--gold); }

.btn {
  appearance: none; border: 1px solid var(--border-strong); cursor: pointer;
  background: var(--panel); color: var(--text);
  padding: 10px 16px; border-radius: 11px; font-size: 14px; font-weight: 600;
  transition: background .15s, border-color .15s, transform .05s, opacity .15s;
}
.btn:hover { border-color: var(--teal); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.primary { background: var(--teal); border-color: var(--teal); color: #fff; }
[data-theme="dark"] .btn.primary { color: #08252a; }
.btn.primary:hover { background: var(--teal-ink); }
.btn.coral { background: var(--coral); border-color: var(--coral); color: #fff; }
[data-theme="dark"] .btn.coral { color: #2a0d08; }
.btn.ghost { background: transparent; }
.btn.small { padding: 6px 11px; font-size: 13px; border-radius: 9px; }
.btn.icon { padding: 8px 10px; line-height: 1; }

.input, textarea, select {
  width: 100%; font: inherit; color: var(--text);
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 11px; padding: 11px 13px;
}
textarea { min-height: 96px; resize: vertical; line-height: 1.55; }
.input:focus, textarea:focus, select:focus { outline: 2px solid var(--teal-soft); border-color: var(--teal); }
label { font-size: 13px; color: var(--muted); font-weight: 600; }

.row { display: flex; gap: 10px; align-items: center; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.center { text-align: center; }
.small { font-size: 13px; }
.pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; background: var(--gold-soft); color: var(--gold-ink); }
.pill.teal { background: var(--teal-soft); color: var(--teal-ink); }
.pill.coral { background: var(--coral-soft); color: var(--coral-ink); }

/* ---- auth ---- */
.auth-wrap { max-width: 430px; margin: 8vh auto 0; }
.field { margin-bottom: 14px; }
.field label { display: block; margin-bottom: 6px; }
.err { color: var(--coral-ink); font-size: 13px; margin-top: 8px; }
.ok { color: #18a878; font-size: 13px; margin-top: 8px; }

/* ---- diagnostic ---- */
.tier-block { padding: 16px 0; border-bottom: 1px solid var(--border); }
.tier-block:last-child { border-bottom: 0; }
.tier-block h3 { font-size: 16px; }
.scale { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 10px 0; }
.scale button { border: 1px solid var(--border); background: var(--panel-2); color: var(--muted); border-radius: 10px; padding: 9px 8px; font-size: 12.5px; font-weight: 600; cursor: pointer; line-height: 1.25; }
.scale button.on { background: var(--teal); border-color: var(--teal); color: #fff; }
[data-theme="dark"] .scale button.on { color: #08252a; }

/* ---- mastery map ---- */
.maprow { display: flex; align-items: center; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--border); }
.maprow:last-child { border-bottom: 0; }
.maprow.click { cursor: pointer; }
.maprow.click:hover .tier-name b { color: var(--teal-ink); }
.tier-name { width: 250px; min-width: 250px; font-size: 14px; }
.tier-name b { font-weight: 700; }
.tier-name .dom { display: block; font-weight: 600; font-size: 11.5px; color: var(--gold-ink); margin-top: 1px; }
.bar { flex: 1; display: flex; gap: 3px; height: 13px; }
.seg { flex: 1; border-radius: 3px; background: var(--s-not); }
.seg.learning { background: var(--s-learning); }
.seg.shaky { background: var(--s-shaky); }
.seg.mastered { background: var(--s-mastered); }
.tier-pct { width: 44px; text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); font-size: 13px; font-weight: 600; }
.legend { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 16px; font-size: 12.5px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

/* ---- domains grid ---- */
.dgrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 680px) { .dgrid { grid-template-columns: 1fr; } }
.domain { background: var(--panel-glass); border: 1px solid var(--border); border-left: 4px solid var(--gold); border-radius: 14px; padding: 18px; box-shadow: var(--shadow); }
.domain h3 { font-size: 15.5px; margin-bottom: 2px; }
.domain .dnum { font-size: 11.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--teal-ink); }
.domain .ring { float: right; }
.bigbar { height: 16px; border-radius: 5px; background: var(--s-not); overflow: hidden; display: flex; margin: 12px 0 8px; }
.bigbar .fill { background: linear-gradient(90deg, var(--teal), var(--s-mastered)); }
.cstat { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--muted); margin-top: 4px; }

/* ---- workbook (journal page) ---- */
.workpage { position: relative; border-radius: 16px; box-shadow: var(--shadow); padding: 26px; border: 1px solid var(--border);
  background-image: linear-gradient(var(--page-wash), var(--page-wash)), var(--page-img);
  background-size: cover; background-position: center; }
:root { --page-wash: rgba(255, 253, 247, 0.55); }
[data-theme="dark"] { --page-wash: rgba(18, 22, 28, 0.86); }
.teach { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 15px 17px; margin: 8px 0 14px; }
.teach p { margin: 0 0 .7em; }
.teach p:last-child { margin-bottom: 0; }
.teach code { background: var(--gold-soft); color: var(--gold-ink); padding: 1px 6px; border-radius: 6px; font-size: 13px; }
.teach ul { margin: .3em 0 .6em 1.1em; }
.section-head { display: flex; align-items: center; gap: 10px; margin: 18px 0 6px; }
.section-head h3 { margin: 0; font-size: 16px; }
.q { margin: 13px 0; }
.q .prompt { font-weight: 600; margin-bottom: 7px; }
.q .depthtag { font-size: 10.5px; color: var(--gold-ink); text-transform: uppercase; letter-spacing: .05em; margin-left: 8px; font-weight: 700; }

.verdict { font-size: 11.5px; font-weight: 800; padding: 2px 9px; border-radius: 999px; }
.verdict.strong, .verdict.mastered { background: #e3f7ee; color: #0a7a52; }
.verdict.partial { background: #fdf0d8; color: #946008; }
.verdict.off { background: #fde7e2; color: var(--coral-ink); }
[data-theme="dark"] .verdict.strong, [data-theme="dark"] .verdict.mastered { background: rgba(43,208,147,.18); color: #58e0ab; }
[data-theme="dark"] .verdict.partial { background: rgba(224,181,62,.18); color: #ecca6a; }
[data-theme="dark"] .verdict.off { background: rgba(255,132,114,.18); color: #ff9d8f; }

.banner { border-radius: 12px; padding: 14px 16px; font-weight: 600; }
.banner.pass { background: var(--teal-soft); color: var(--teal-ink); border: 1px solid var(--teal); }
.banner.hold { background: var(--coral-soft); color: var(--coral-ink); border: 1px solid var(--coral); }

.loader { display: inline-block; width: 16px; height: 16px; border: 2px solid var(--teal-soft); border-top-color: var(--teal); border-radius: 50%; animation: spin .7s linear infinite; vertical-align: -3px; margin-right: 8px; }
@keyframes spin { to { transform: rotate(360deg); } }

.teacher-tag { font-size: 12.5px; color: var(--muted); }
.teacher-tag b { color: var(--text); }
.savechip { font-size: 12px; color: var(--faint); }
.speakbtn { border: 1px solid var(--border-strong); background: var(--panel); border-radius: 9px; padding: 5px 9px; font-size: 12.5px; cursor: pointer; color: var(--teal-ink); font-weight: 600; }
.speakbtn.on { background: var(--teal); color: #fff; border-color: var(--teal); }