/* test.lurrafly.com — mismo ADN visual que lurrafly.com (navy + azul eléctrico, Exo 2 / Inter) */
:root {
  --c-void: #06162E;
  --c-navy: #0B2447;
  --c-navy-soft: #13315C;
  --c-blue: #2563EB;
  --c-cyan: #38BDF8;
  --c-green: #10B981;
  --c-red: #E5484D;
  --c-amber: #F59E0B;
  --bg: #F7F9FC;
  --surface: #FFFFFF;
  --line: #E2E8F0;
  --title: #0B2447;
  --text: #334155;
  --muted: #64748B;
  --ok-bg: #E7F8F1;
  --ko-bg: #FDECEC;
  --sel-bg: #EAF1FE;
  --f-head: "Exo 2", system-ui, sans-serif;
  --f-body: "Inter", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;
  --r-sm: 8px; --r-md: 14px; --r-lg: 22px;
  --sh-sm: 0 2px 8px rgba(11, 36, 71, .06);
  --sh-md: 0 12px 32px -12px rgba(11, 36, 71, .18);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #06162E;
    --surface: #0D2142;
    --line: rgba(255, 255, 255, .10);
    --title: #E8EEF7;
    --text: #CBD8E8;
    --muted: #93A5BE;
    --ok-bg: rgba(16, 185, 129, .16);
    --ko-bg: rgba(229, 72, 77, .18);
    --sel-bg: rgba(37, 99, 235, .22);
    --sh-sm: none;
    --sh-md: none;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--f-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
h1, h2, h3 { font-family: var(--f-head); color: var(--title); line-height: 1.15; margin: 0; letter-spacing: -.01em; }
button, input, textarea, select { font: inherit; color: inherit; }
img { max-width: 100%; height: auto; }
:focus-visible { outline: 2px solid var(--c-cyan); outline-offset: 2px; }
[hidden] { display: none !important; }

/* ---------- cabecera ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  padding-top: max(10px, env(safe-area-inset-top));
  background: var(--c-navy); color: #E8EEF7;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; margin-right: auto; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.brand b { font-family: var(--f-head); font-weight: 800; font-size: 1.05rem; letter-spacing: .01em; }
.brand small { display: block; font-size: .72rem; color: #93A5BE; font-weight: 500; }
.topbar .btn-ghost { color: #CBD8E8; border-color: rgba(255, 255, 255, .18); }

main { max-width: 860px; margin: 0 auto; padding: 20px 16px 96px; }

/* ---------- botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 18px;
  border-radius: var(--r-sm); border: 1px solid transparent;
  background: var(--c-blue); color: #fff; font-weight: 600; cursor: pointer;
  text-decoration: none; transition: filter .15s, background .15s;
}
.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .45; cursor: not-allowed; filter: none; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { background: var(--sel-bg); }
.btn-ok { background: var(--c-green); }
.btn-danger { background: var(--c-red); }
.btn-sm { min-height: 34px; padding: 6px 12px; font-size: .9rem; }
.btn-block { width: 100%; }

/* ---------- login ---------- */
.login {
  min-height: 100vh; display: grid; place-items: center; padding: 24px 16px;
  background: radial-gradient(1200px 600px at 20% -10%, rgba(37, 99, 235, .35), transparent 60%), var(--c-void);
}
.login-card {
  width: 100%; max-width: 380px; padding: 32px 24px;
  background: var(--surface); border-radius: var(--r-lg); box-shadow: var(--sh-md);
  text-align: center;
}
.login-card img { width: 64px; height: 64px; border-radius: 16px; margin: 0 auto 14px; display: block; }
.login-card h1 { font-size: 1.5rem; margin-bottom: 4px; }
.login-card p { color: var(--muted); margin: 0 0 22px; font-size: .95rem; }
.field { display: block; text-align: left; margin-bottom: 14px; }
.field span { display: block; font-size: .82rem; font-weight: 600; color: var(--muted); margin-bottom: 6px; }
.input, textarea.input, select.input {
  width: 100%; min-height: 44px; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  background: var(--bg); color: var(--title);
}
textarea.input { min-height: 80px; resize: vertical; line-height: 1.45; }
.error { color: var(--c-red); font-size: .9rem; min-height: 1.4em; margin-top: 8px; }

/* ---------- inicio ---------- */
.hero { margin-bottom: 20px; }
.hero h1 { font-size: clamp(1.5rem, 4vw, 2rem); }
.hero p { color: var(--muted); margin: 6px 0 0; }
.tabs { display: flex; gap: 6px; padding: 4px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md); margin-bottom: 18px; overflow-x: auto; }
.tab {
  flex: 1; white-space: nowrap; min-height: 42px; padding: 8px 14px; border: 0; border-radius: 10px;
  background: transparent; color: var(--muted); font-weight: 600; cursor: pointer;
}
.tab[aria-selected="true"] { background: var(--c-navy); color: #fff; }
@media (prefers-color-scheme: dark) { .tab[aria-selected="true"] { background: var(--c-blue); } }

.section-title { font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 22px 0 10px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.card {
  display: flex; flex-direction: column; gap: 4px; text-align: left;
  padding: 16px; border-radius: var(--r-md); border: 1px solid var(--line);
  background: var(--surface); box-shadow: var(--sh-sm); cursor: pointer;
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--c-blue); transform: translateY(-1px); }
.card b { font-family: var(--f-head); font-size: 1.1rem; color: var(--title); }
.card small { color: var(--muted); font-size: .85rem; }
.card .best { font-family: var(--f-mono); font-size: .78rem; color: var(--c-green); }
.card-feature {
  grid-column: 1 / -1; flex-direction: row; align-items: center; gap: 14px;
  background: linear-gradient(135deg, var(--c-navy), var(--c-navy-soft)); border-color: transparent; color: #E8EEF7;
}
.card-feature b { color: #fff; font-size: 1.15rem; }
.card-feature small { color: #93A5BE; }
.card-feature .icon { font-size: 1.6rem; width: 48px; height: 48px; display: grid; place-items: center; border-radius: 12px; background: rgba(56, 189, 248, .15); flex: none; }
.opts { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-top: 18px; padding: 12px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md); font-size: .92rem; }
.switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.switch input { width: 18px; height: 18px; accent-color: var(--c-blue); }

.history { margin-top: 26px; }
.history li { display: flex; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: .9rem; }
.history ul { list-style: none; padding: 0; margin: 0; }
.tag { font-family: var(--f-mono); font-size: .78rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; }
.tag-ok { background: var(--ok-bg); color: var(--c-green); }
.tag-ko { background: var(--ko-bg); color: var(--c-red); }

/* ---------- test ---------- */
.quiz-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.quiz-head h2 { font-size: 1.05rem; margin-right: auto; }
.mono { font-family: var(--f-mono); font-size: .85rem; color: var(--muted); }
.progress { height: 6px; border-radius: 999px; background: var(--line); overflow: hidden; margin-bottom: 18px; }
.progress > i { display: block; height: 100%; background: linear-gradient(90deg, var(--c-blue), var(--c-cyan)); transition: width .25s; }
.q-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px 20px; box-shadow: var(--sh-sm); }
.q-num { font-family: var(--f-mono); font-size: .8rem; color: var(--c-blue); font-weight: 700; margin-bottom: 8px; }
.q-text { font-size: 1.08rem; font-weight: 600; color: var(--title); margin: 0 0 16px; white-space: pre-line; }
.q-img { display: block; margin: 0 auto 16px; max-height: 300px; border-radius: var(--r-sm); border: 1px solid var(--line); background: #fff; }
.answers { display: grid; gap: 10px; }
.answer {
  display: flex; gap: 12px; align-items: flex-start; text-align: left; width: 100%;
  padding: 12px 14px; min-height: 52px; border-radius: var(--r-md);
  border: 1.5px solid var(--line); background: var(--surface); cursor: pointer; transition: border-color .12s, background .12s;
}
.answer:hover:not(:disabled) { border-color: var(--c-blue); }
.answer:disabled { cursor: default; }
.answer .letter {
  flex: none; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 8px;
  font-family: var(--f-mono); font-weight: 700; font-size: .85rem; background: var(--bg); color: var(--muted);
}
.answer.selected { border-color: var(--c-blue); background: var(--sel-bg); }
.answer.selected .letter { background: var(--c-blue); color: #fff; }
.answer.correct { border-color: var(--c-green); background: var(--ok-bg); }
.answer.correct .letter { background: var(--c-green); color: #fff; }
.answer.wrong { border-color: var(--c-red); background: var(--ko-bg); }
.answer.wrong .letter { background: var(--c-red); color: #fff; }
.explain { margin-top: 14px; padding: 12px 14px; border-radius: var(--r-sm); background: var(--bg); border-left: 3px solid var(--c-cyan); font-size: .92rem; }
.quiz-nav {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 9;
  display: flex; gap: 10px; justify-content: center;
  padding: 10px 16px; padding-bottom: max(10px, env(safe-area-inset-bottom));
  background: var(--surface); border-top: 1px solid var(--line);
}
.quiz-nav .btn { flex: 1; max-width: 220px; }
.dots { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.dot {
  width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface);
  font-family: var(--f-mono); font-size: .75rem; cursor: pointer; color: var(--muted);
}
.dot.done { background: var(--sel-bg); color: var(--c-blue); border-color: transparent; }
.dot.ok { background: var(--ok-bg); color: var(--c-green); border-color: transparent; }
.dot.ko { background: var(--ko-bg); color: var(--c-red); border-color: transparent; }
.dot.current { outline: 2px solid var(--c-blue); outline-offset: 1px; }

/* ---------- resultados ---------- */
.score { text-align: center; padding: 28px 20px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--line); margin-bottom: 18px; }
.score .big { font-family: var(--f-head); font-size: 3rem; font-weight: 800; color: var(--title); line-height: 1; }
.score .verdict { display: inline-block; margin-top: 12px; font-family: var(--f-head); font-weight: 800; letter-spacing: .06em; padding: 6px 18px; border-radius: 999px; }
.verdict.ok { background: var(--ok-bg); color: var(--c-green); }
.verdict.ko { background: var(--ko-bg); color: var(--c-red); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 18px; }
.review-item { padding: 16px; margin-bottom: 10px; border-radius: var(--r-md); background: var(--surface); border: 1px solid var(--line); }
.review-item.ko { border-left: 4px solid var(--c-red); }
.review-item.ok { border-left: 4px solid var(--c-green); }
.review-item p { margin: 4px 0; font-size: .92rem; }
.review-item .q { font-weight: 600; color: var(--title); white-space: pre-line; }
.offline { position: fixed; bottom: 76px; left: 50%; transform: translateX(-50%); background: var(--c-amber); color: #1a1200; padding: 6px 14px; border-radius: 999px; font-size: .85rem; font-weight: 600; z-index: 20; }

@media (max-width: 520px) {
  .q-card { padding: 18px 14px; }
  .brand small { display: none; }
}