/* CCAR-F Prep — dark-first, Linear-inspiriert. Tokens ~ Tailwind-Skala. */
:root {
  --bg: #0d0e12;
  --bg-raised: #14161c;
  --bg-hover: #1a1d25;
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #e7e9ee;
  --text-2: #9aa1af;
  --text-3: #646b78;
  --accent: #8b7cf6;          /* violet-400/500 */
  --accent-strong: #7c6af3;
  --accent-soft: rgba(139, 124, 246, 0.14);
  --green: #34d399;
  --green-soft: rgba(52, 211, 153, 0.13);
  --red: #f87171;
  --red-soft: rgba(248, 113, 113, 0.12);
  --amber: #fbbf24;
  --amber-soft: rgba(251, 191, 36, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}
::selection { background: var(--accent-soft); }

button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
input {
  font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm); padding: 10px 14px; outline: none; width: 100%;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

/* ---------- Layout ---------- */
#app { max-width: 1060px; margin: 0 auto; padding: 0 20px 80px; }

.topbar {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 0; margin-bottom: 28px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.topbar .logo {
  font-weight: 700; letter-spacing: -0.02em; font-size: 16px;
  display: flex; align-items: center; gap: 9px; cursor: pointer;
}
.logo-mark {
  width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, var(--accent) 0%, #5a8bf6 100%);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; color: #fff; font-weight: 800;
}
.topbar nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.topbar nav button {
  padding: 7px 13px; border-radius: var(--radius-sm);
  color: var(--text-2); font-weight: 500; font-size: 14px;
  transition: background 150ms, color 150ms;
}
.topbar nav button:hover { background: var(--bg-hover); color: var(--text); }
.topbar nav button.active { background: var(--accent-soft); color: var(--accent); }

/* ---------- Components ---------- */
.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent-strong); color: #fff;
  padding: 10px 18px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 14px;
  transition: filter 150ms, transform 100ms;
}
.btn:hover { filter: brightness(1.1); }
.btn:active { transform: translateY(1px); }
.btn.secondary { background: var(--bg-hover); color: var(--text); border: 1px solid var(--border-strong); }
.btn.ghost { background: none; color: var(--text-2); border: 1px solid var(--border-strong); }
.btn.ghost:hover { color: var(--text); background: var(--bg-hover); }
.btn:disabled { opacity: 0.45; cursor: default; filter: none; }
.btn.small { padding: 6px 12px; font-size: 13px; }

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; padding: 3px 10px;
  border-radius: 99px; background: var(--bg-hover); color: var(--text-2);
  white-space: nowrap;
}
.pill.accent { background: var(--accent-soft); color: var(--accent); }
.pill.green { background: var(--green-soft); color: var(--green); }
.pill.red { background: var(--red-soft); color: var(--red); }
.pill.amber { background: var(--amber-soft); color: var(--amber); }

h1 { font-size: 26px; letter-spacing: -0.03em; line-height: 1.25; margin-bottom: 6px; }
h2 { font-size: 19px; letter-spacing: -0.02em; margin: 0 0 14px; }
.sub { color: var(--text-2); font-size: 14px; }
.muted { color: var(--text-3); font-size: 13px; }

.progress-track {
  height: 6px; border-radius: 99px; background: var(--bg-hover); overflow: hidden;
}
.progress-fill {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--accent) 0%, #5a8bf6 100%);
  transition: width 400ms ease-out;
}
.progress-fill.green { background: var(--green); }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 82vh; display: flex; align-items: center; justify-content: center;
}
.login-card { width: 100%; max-width: 400px; padding: 36px; text-align: center; }
.login-card .logo-mark { width: 48px; height: 48px; font-size: 22px; border-radius: 13px; margin-bottom: 18px; }
.login-card h1 { font-size: 22px; }
.login-card form { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }
.login-error { color: var(--red); font-size: 13px; min-height: 18px; }

/* ---------- Dashboard ---------- */
.grid { display: grid; gap: 14px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 800px) { .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; } }

.stat-tile { padding: 18px 20px; }
.stat-tile .value { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stat-tile .label { color: var(--text-2); font-size: 13px; margin-top: 2px; }

.domain-row {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 18px; cursor: pointer;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-raised);
  transition: border-color 150ms, background 150ms;
}
.domain-row:hover { border-color: var(--border-strong); background: var(--bg-hover); }
.domain-row .info { flex: 1; min-width: 0; }
.domain-row .title { font-weight: 600; font-size: 15px; }
.domain-row .meta { color: var(--text-3); font-size: 12.5px; margin-top: 1px; }
.domain-row .bar { width: 130px; }
.domain-row .pct { width: 42px; text-align: right; font-variant-numeric: tabular-nums; color: var(--text-2); font-size: 13px; }
@media (max-width: 640px) { .domain-row .bar { width: 70px; } }

.section { margin-top: 34px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 14px; }
.section-head h2 { margin: 0; }

/* ---------- Lesson ---------- */
.lesson-list { display: flex; flex-direction: column; gap: 8px; }
.lesson-item {
  display: flex; align-items: center; gap: 13px;
  padding: 13px 16px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg-raised);
  cursor: pointer; transition: border-color 150ms;
}
.lesson-item:hover { border-color: var(--border-strong); }
.check {
  width: 21px; height: 21px; border-radius: 50%; flex-shrink: 0;
  border: 1.5px solid var(--border-strong);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; color: #fff;
}
.check.done { background: var(--green); border-color: var(--green); }

.prose { max-width: 720px; }
.prose h2 { font-size: 20px; margin: 30px 0 10px; letter-spacing: -0.02em; }
.prose h3 { font-size: 16.5px; margin: 24px 0 8px; }
.prose p { margin: 10px 0; color: var(--text); }
.prose ul, .prose ol { margin: 10px 0 10px 22px; }
.prose li { margin: 5px 0; }
.prose code {
  font-family: var(--mono); font-size: 0.86em;
  background: var(--bg-hover); border: 1px solid var(--border);
  padding: 1.5px 5px; border-radius: 5px;
}
.prose pre {
  background: #101218; border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 16px;
  overflow-x: auto; margin: 14px 0; font-size: 13px; line-height: 1.55;
}
.prose pre code { background: none; border: none; padding: 0; }
.prose blockquote {
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  padding: 10px 16px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 14px 0; color: var(--text);
}
.prose table { border-collapse: collapse; width: 100%; margin: 14px 0; font-size: 13.5px; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--bg-hover); font-weight: 600; }
.prose strong { color: #fff; }

.term-card {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 13px 16px; background: var(--bg-raised);
}
.term-card .en { font-weight: 650; font-size: 14.5px; }
.term-card .de { color: var(--accent); font-size: 13px; font-weight: 600; margin-left: 8px; }
.term-card .expl { color: var(--text-2); font-size: 13.5px; margin-top: 5px; }

.resource-link {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 15px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); background: var(--bg-raised);
  transition: border-color 150ms;
}
.resource-link:hover { border-color: var(--accent); text-decoration: none; }
.resource-link .ico { font-size: 17px; line-height: 1.4; }
.resource-link .t { font-weight: 600; font-size: 14px; color: var(--text); }
.resource-link .n { font-size: 12.5px; color: var(--text-3); margin-top: 1px; }

.crumb { color: var(--text-3); font-size: 13px; margin-bottom: 14px; display: flex; gap: 7px; align-items: center; flex-wrap: wrap; }
.crumb button { color: var(--text-2); }
.crumb button:hover { color: var(--accent); }

/* ---------- Quiz ---------- */
.quiz-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; gap: 10px; flex-wrap: wrap; }
.timer { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 17px; }
.timer.low { color: var(--red); }

.q-scenario {
  background: var(--bg-hover); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 13px 16px;
  font-size: 13.5px; color: var(--text-2); margin-bottom: 16px;
}
.q-scenario b { color: var(--text); }
.q-text { font-size: 16.5px; font-weight: 600; line-height: 1.5; margin-bottom: 18px; }

.opt {
  display: flex; gap: 13px; align-items: flex-start;
  width: 100%; text-align: left;
  padding: 13px 16px; margin-bottom: 9px;
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  background: var(--bg-raised); font-size: 14.5px; line-height: 1.5;
  transition: border-color 120ms, background 120ms;
}
.opt:hover:not(:disabled) { border-color: var(--accent); background: var(--bg-hover); }
.opt .key {
  font-weight: 700; font-size: 12.5px; color: var(--text-2);
  border: 1px solid var(--border-strong); border-radius: 6px;
  width: 24px; height: 24px; display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 1px;
}
.opt.sel { border-color: var(--accent); background: var(--accent-soft); }
.opt.correct { border-color: var(--green); background: var(--green-soft); }
.opt.correct .key { border-color: var(--green); color: var(--green); }
.opt.wrong { border-color: var(--red); background: var(--red-soft); }
.opt.wrong .key { border-color: var(--red); color: var(--red); }
.opt:disabled { cursor: default; }

.explain {
  border-left: 3px solid var(--green); background: var(--green-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 13px 16px; margin: 16px 0; font-size: 14px;
}
.explain.wrong { border-color: var(--red); background: var(--red-soft); }
.explain .verdict { font-weight: 700; margin-bottom: 4px; }

.quiz-progress { display: flex; gap: 4px; margin-bottom: 20px; }
.quiz-progress span { height: 4px; flex: 1; border-radius: 99px; background: var(--bg-hover); }
.quiz-progress span.done { background: var(--accent); }
.quiz-progress span.ok { background: var(--green); }
.quiz-progress span.bad { background: var(--red); }

.result-ring-wrap { display: flex; flex-direction: column; align-items: center; padding: 30px 0 10px; }
.big-score { font-size: 44px; font-weight: 800; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }

/* ---------- Glossar ---------- */
.gloss-toolbar { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.gloss-toolbar input { max-width: 320px; }
.gloss-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
@media (max-width: 760px) { .gloss-grid { grid-template-columns: 1fr; } }

/* Flashcards */
.flash-card {
  max-width: 560px; margin: 0 auto; min-height: 240px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 34px; cursor: pointer; gap: 10px;
}
.flash-card .en { font-size: 24px; font-weight: 700; letter-spacing: -0.02em; }
.flash-card .de { font-size: 17px; color: var(--accent); font-weight: 650; }
.flash-card .expl { color: var(--text-2); font-size: 14.5px; max-width: 440px; }

.footer-note { margin-top: 60px; text-align: center; color: var(--text-3); font-size: 12.5px; }

.fade-in { animation: fadeIn 250ms ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--bg-hover); border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm); padding: 11px 18px; font-size: 14px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.45); z-index: 50;
}