/* Kulturális Vizsga Trainer — single stylesheet, light+dark */

:root {
  --green: #1c6b48;
  --red: #c0392b;
  --bg: #f7f6f3;
  --surface: #ffffff;
  --surface2: #eeece7;
  --ink: #21252b;
  --muted: #6b7280;
  --line: #ddd9d0;
  --accent: var(--green);
  --accent-ink: #ffffff;
  --ok: #1c6b48;
  --bad: #c0392b;
  --warn: #b45309;
  --hu: #14532d;
  --zh: #7c2d12;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
  --maxw: 960px;
}
[data-theme="dark"] {
  --bg: #16181d;
  --surface: #1f232b;
  --surface2: #262b34;
  --ink: #e8e6e1;
  --muted: #9aa1ac;
  --line: #343a45;
  --accent: #2e9e6b;
  --accent-ink: #08130d;
  --ok: #4ade80;
  --bad: #f87171;
  --warn: #fbbf24;
  --hu: #86efac;
  --zh: #fdba74;
  --shadow: none;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #16181d; --surface: #1f232b; --surface2: #262b34; --ink: #e8e6e1;
    --muted: #9aa1ac; --line: #343a45; --accent: #2e9e6b; --accent-ink: #08130d;
    --ok: #4ade80; --bad: #f87171; --warn: #fbbf24; --hu: #86efac; --zh: #fdba74;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 system-ui, "Segoe UI", Roboto, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  min-height: 100svh; display: flex; flex-direction: column;
}
a { color: var(--accent); }
button { font: inherit; cursor: pointer; }
h1 { font-size: 1.5rem; margin: .2rem 0 .6rem; }
h2 { font-size: 1.15rem; margin: 1.4rem 0 .5rem; }
h3 { font-size: 1rem; margin: 1rem 0 .35rem; }

/* top bar */
#topbar {
  display: flex; align-items: center; gap: .75rem; flex-wrap: wrap;
  padding: .55rem clamp(.8rem, 3vw, 1.4rem);
  background: var(--surface); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
#brand { display: flex; align-items: center; gap: .5rem; font-weight: 700; text-decoration: none; color: var(--ink); }
.flag { display: inline-flex; width: 22px; height: 15px; border-radius: 3px; overflow: hidden; flex-direction: column; border: 1px solid var(--line); }
.flag i { flex: 1; }
.flag i:nth-child(1) { background: #ce2939; }
.flag i:nth-child(2) { background: #fff; }
.flag i:nth-child(3) { background: #477050; }
#nav { display: flex; gap: .15rem; flex-wrap: wrap; }
#nav a {
  text-decoration: none; color: var(--muted); padding: .35rem .6rem;
  border-radius: 8px; font-size: .92rem; white-space: nowrap;
}
#nav a.active { background: var(--accent); color: var(--accent-ink); }
#nav a:hover:not(.active) { background: var(--surface2); color: var(--ink); }
#topbar-actions { margin-left: auto; display: flex; gap: .4rem; }
.chip {
  border: 1px solid var(--line); background: var(--surface2); color: var(--ink);
  border-radius: 999px; padding: .25rem .7rem; font-size: .88rem;
}
.chip:hover { border-color: var(--accent); }
.chip.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

/* layout */
#view { flex: 1; width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 1.1rem clamp(.8rem, 3vw, 1.4rem) 3rem; outline: none; }
#foot { text-align: center; color: var(--muted); font-size: .8rem; padding: 1rem; border-top: 1px solid var(--line); }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem 1.1rem; margin: .7rem 0; box-shadow: var(--shadow);
}
.grid { display: grid; gap: .7rem; }
@media (min-width: 640px) { .grid.cols-2 { grid-template-columns: 1fr 1fr; } .grid.cols-3 { grid-template-columns: repeat(3, 1fr); } }

.btn {
  display: inline-block; border: 1px solid var(--line); border-radius: 10px;
  background: var(--surface); color: var(--ink); padding: .5rem 1rem; text-decoration: none;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn.big { padding: .7rem 1.3rem; font-size: 1.05rem; }
.btn.danger { border-color: var(--bad); color: var(--bad); background: transparent; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-row { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin: .6rem 0; }

.muted { color: var(--muted); }
.small { font-size: .85rem; }
.hu { color: var(--hu); font-weight: 600; }
.zh { color: var(--zh); }
.tag { display: inline-block; background: var(--surface2); border-radius: 6px; padding: .05rem .45rem; font-size: .78rem; color: var(--muted); }
.pts { font-variant-numeric: tabular-nums; }

/* stat tiles */
.tiles { display: grid; gap: .7rem; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: .7rem .9rem; }
.tile .v { font-size: 1.5rem; font-weight: 700; }
.tile .l { font-size: .8rem; color: var(--muted); }
.tile.ok .v { color: var(--ok); }
.tile.bad .v { color: var(--bad); }
.tile.warn .v { color: var(--warn); }

/* learn */
.fact { display: grid; gap: .15rem; padding: .55rem 0; border-bottom: 1px dashed var(--line); }
.fact:last-child { border-bottom: none; }
.fact .f-hu { font-weight: 600; }
.fact .f-en, .fact .f-zh { font-size: .92rem; }
.topic-head { display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap; }
.topic-num { background: var(--accent); color: var(--accent-ink); border-radius: 8px; padding: .1rem .55rem; font-weight: 700; }

details.section { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); margin: .6rem 0; }
details.section > summary { cursor: pointer; padding: .7rem 1rem; font-weight: 600; list-style: none; display: flex; gap: .5rem; align-items: baseline; }
details.section > summary::before { content: "▸"; color: var(--muted); transition: transform .15s; }
details.section[open] > summary::before { transform: rotate(90deg); }
details.section > .sec-body { padding: 0 1rem .8rem; }

/* flashcards */
.fc-stage { min-height: 260px; display: flex; flex-direction: column; }
.fc-card {
  flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center;
  text-align: center; gap: .6rem; padding: 1.4rem; cursor: pointer; user-select: none;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.fc-front { font-size: 1.25rem; font-weight: 700; }
.fc-back { font-size: 1.1rem; }
.fc-grade { display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; margin-top: .7rem; }
.fc-grade button { padding: .6rem .3rem; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); }
.fc-grade .g0 { color: var(--bad); } .fc-grade .g3 { color: var(--ok); }

/* exam */
.q-card { margin: .8rem 0; }
.q-head { display: flex; justify-content: space-between; gap: .6rem; align-items: baseline; flex-wrap: wrap; }
.q-text { font-size: 1.08rem; font-weight: 600; margin: .5rem 0; }
.q-trans { background: var(--surface2); border-radius: 8px; padding: .5rem .7rem; font-size: .92rem; margin: .4rem 0; }
.opt { display: flex; gap: .55rem; align-items: flex-start; padding: .45rem .6rem; border: 1px solid var(--line); border-radius: 10px; margin: .35rem 0; cursor: pointer; background: var(--surface); }
.opt:hover { border-color: var(--accent); }
.opt input { margin-top: .25rem; }
.opt.correct { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, var(--surface)); }
.opt.wrong { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 10%, var(--surface)); }
input[type="text"] {
  font: inherit; width: 100%; padding: .5rem .7rem; border-radius: 10px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
}
input[type="text"]:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
input[type="text"].correct { border-color: var(--ok); outline-color: var(--ok); }
input[type="text"].wrong { border-color: var(--bad); }
.accent-bar { display: flex; gap: .3rem; flex-wrap: wrap; margin: .45rem 0; }
.accent-bar button { min-width: 2.1rem; padding: .3rem 0; border-radius: 8px; border: 1px solid var(--line); background: var(--surface2); }
.exam-top { position: sticky; top: 52px; z-index: 10; display: flex; justify-content: space-between; align-items: center; gap: .6rem;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: .5rem .9rem; margin: .5rem 0; flex-wrap: wrap; }
#timer { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 1.15rem; }
#timer.low { color: var(--bad); }
.q-jump { display: flex; gap: .3rem; flex-wrap: wrap; }
.q-jump button { width: 2rem; height: 2rem; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); font-size: .85rem; }
.q-jump button.answered { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.q-jump button.current { outline: 2px solid var(--warn); }

.result-banner { text-align: center; padding: 1.4rem 1rem; border-radius: var(--radius); margin: .8rem 0; border: 2px solid var(--line); }
.result-banner.pass { border-color: var(--ok); }
.result-banner.fail { border-color: var(--bad); }
.result-banner .score { font-size: 2.4rem; font-weight: 800; }

/* vocab */
table.vtab { width: 100%; border-collapse: collapse; font-size: .95rem; }
table.vtab th, table.vtab td { text-align: left; padding: .4rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
table.vtab th { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
.vtab-wrap { overflow-x: auto; }

/* progress bars */
.bar { height: 10px; background: var(--surface2); border-radius: 6px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); border-radius: 6px; }
.bar-row { display: grid; grid-template-columns: minmax(110px, 200px) 1fr 3.5rem; gap: .6rem; align-items: center; margin: .35rem 0; }

/* quiz (vocab) */
.quiz-opt { display: block; width: 100%; text-align: left; margin: .35rem 0; padding: .55rem .8rem; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); }
.quiz-opt.correct { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, var(--surface)); }
.quiz-opt.wrong { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 10%, var(--surface)); }

#toast {
  position: fixed; bottom: 1.2rem; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: var(--bg); padding: .55rem 1.1rem; border-radius: 999px;
  font-size: .9rem; z-index: 50; box-shadow: 0 4px 14px rgba(0,0,0,.25);
}

/* study plan */
.plan-count { font-size: 2rem; font-weight: 800; color: var(--accent); line-height: 1.1; }
.plan-bar { height: 8px; background: var(--surface2); border-radius: 4px; overflow: hidden; margin: .5rem 0 .2rem; }
.plan-bar i { display: block; height: 100%; background: var(--accent); transition: width .25s; }
.plan-day { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: .55rem .8rem; margin: .5rem 0; }
.plan-day.today { border-color: var(--accent); box-shadow: var(--shadow); }
.plan-day .d-head { display: flex; align-items: baseline; gap: .5rem; flex-wrap: wrap; margin-bottom: .2rem; }
.plan-day .d-date { font-weight: 700; }
.plan-task { display: flex; align-items: flex-start; gap: .55rem; padding: .22rem 0; }
.plan-task input[type=checkbox] { margin-top: .3rem; flex: none; }
.plan-task.done .t-label { text-decoration: line-through; opacity: .55; }
.plan-task .t-min { margin-left: auto; white-space: nowrap; flex: none; }
details.plan-group { margin: .8rem 0; }
details.plan-group summary { cursor: pointer; color: var(--muted); }
#plan-date { font: inherit; padding: .4rem .6rem; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--ink); }

@media (max-width: 560px) {
  #nav { order: 3; width: 100%; overflow-x: auto; }
  .exam-top { top: 96px; }
}
@media print {
  #topbar, #foot, .btn, .accent-bar { display: none !important; }
}