/* ===== Tanulókártya — grafit-antracit téma ===== */

:root {
  color-scheme: dark;
  --page: #131416;
  --surface: #1c1e21;
  --surface-2: #24262a;
  --border: rgba(255, 255, 255, 0.08);
  --ink: #f2f2ef;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;

  --accent: #3987e5;      /* elsődleges (kék) */
  --accent-hover: #2a78d6;
  --state-known: #199e70; /* biztos tudás */
  --state-learning: #3987e5; /* tanulás alatt */
  --state-fresh: #6b6a65; /* még új */
  --good: #0ca30c;
  --bad: #e66767;
  --danger: #d03b3b;

  --radius: 12px;
  --radius-sm: 8px;
  font-size: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.55;
}

h1 { font-size: 1.5rem; margin: 0 0 0.5rem; }
h2 { font-size: 1.15rem; margin: 0 0 0.75rem; }
h3 { font-size: 1rem; margin: 0 0 0.5rem; }
p { margin: 0.25rem 0 0.75rem; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: var(--surface-2); padding: 0.1em 0.4em; border-radius: 4px; font-size: 0.9em; }
.muted { color: var(--muted); font-size: 0.92rem; }

/* ===== navigáció ===== */
.topnav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.topnav-inner {
  max-width: 1080px; margin: 0 auto; padding: 0.6rem 1rem;
  display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--ink); letter-spacing: 0.01em; }
.brand span { color: var(--accent); }
.brand:hover { text-decoration: none; }
.brand-big { font-size: 1.8rem; margin-bottom: 0.25rem; }
.nav-links { display: flex; gap: 0.25rem; flex: 1; }
.nav-links a {
  color: var(--ink-2); padding: 0.35rem 0.75rem; border-radius: var(--radius-sm);
}
.nav-links a:hover { background: var(--surface-2); text-decoration: none; }
.nav-links a.active { background: var(--surface-2); color: var(--ink); font-weight: 600; }
.nav-user { display: flex; align-items: center; gap: 0.6rem; }
.nav-email { color: var(--muted); font-size: 0.85rem; }

/* ===== elrendezés ===== */
.container { max-width: 1080px; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
.container-narrow { max-width: 760px; }
.page-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.section-title { margin-top: 2rem; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin-bottom: 1rem;
}

/* ===== gombok, űrlapok ===== */
.btn {
  display: inline-block; border: 1px solid transparent; cursor: pointer;
  border-radius: var(--radius-sm); padding: 0.5rem 1rem;
  font-size: 0.95rem; font-family: inherit; text-align: center;
  background: var(--surface-2); color: var(--ink);
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; font-weight: 600; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { border-color: var(--border); }
.btn-secondary:hover { background: var(--surface-2); border-color: var(--accent); }
.btn-ghost { background: transparent; color: var(--ink-2); border-color: transparent; }
.btn-ghost:hover { background: var(--surface-2); }
.btn-danger { background: transparent; color: var(--bad); border-color: transparent; }
.btn-danger:hover { background: rgba(208, 59, 59, 0.15); }
.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.85rem; }
.btn-block { display: block; width: 100%; }
.btn:disabled { opacity: 0.35; cursor: default; }

input[type="text"], input[type="email"], input[type="password"], input[type="number"],
input[type="file"], input[type="datetime-local"], select, textarea {
  background: var(--page); color: var(--ink);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 0.5rem 0.7rem; font-family: inherit; font-size: 0.95rem;
  max-width: 100%;
}
input:focus, select:focus, textarea:focus, .btn:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px;
}
textarea { width: 100%; resize: vertical; font-size: 0.95rem; }
label { display: block; font-size: 0.92rem; color: var(--ink-2); }
label > input, label > select { display: block; margin-top: 0.3rem; width: 100%; }
.form-grid { display: grid; gap: 0.9rem; max-width: 480px; }
.form-row { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.form-row input { flex: 1; min-width: 180px; }
.input-narrow { max-width: 160px; }
.inline-form { display: inline-block; margin: 0; }
.rename-form { display: flex; gap: 0.4rem; align-items: center; }
.rename-form input { min-width: 200px; }
fieldset.checkbox-group { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0.6rem 0.9rem; }
fieldset.checkbox-group legend { font-size: 0.85rem; color: var(--muted); padding: 0 0.35rem; }
.checkbox-label { display: flex; align-items: center; gap: 0.45rem; padding: 0.15rem 0; font-size: 0.95rem; }
.checkbox-label input { width: auto; margin: 0; }

/* ===== jelzések ===== */
.alert {
  border-radius: var(--radius-sm); padding: 0.7rem 1rem; margin-bottom: 1rem;
  border: 1px solid var(--border); font-size: 0.95rem;
}
.alert-ok { border-color: rgba(12, 163, 12, 0.4); background: rgba(12, 163, 12, 0.1); }
.alert-error { border-color: rgba(208, 59, 59, 0.5); background: rgba(208, 59, 59, 0.12); }
.alert-code { border-color: rgba(57, 135, 229, 0.5); background: rgba(57, 135, 229, 0.1); }
.code-display {
  font-size: 1.3rem; letter-spacing: 0.15em; font-weight: 700;
  background: var(--page); padding: 0.15em 0.5em; border-radius: 6px;
}
.badge {
  display: inline-block; font-size: 0.78rem; padding: 0.12rem 0.55rem;
  border-radius: 999px; background: var(--surface-2); color: var(--ink-2);
  border: 1px solid var(--border);
}
.badge-good { color: #7fd88f; border-color: rgba(12, 163, 12, 0.5); }
.badge-bad { color: var(--bad); border-color: rgba(208, 59, 59, 0.5); }
.badge-muted { color: var(--muted); }
.text-good { color: #7fd88f; }
.text-bad { color: var(--bad); }

/* ===== belépés ===== */
.login-body { display: flex; min-height: 100vh; align-items: center; justify-content: center; background: var(--page); }
.login-wrap { width: 100%; max-width: 420px; padding: 1rem; }
.login-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; }
.login-sub { color: var(--muted); margin-bottom: 1.5rem; }
.login-form label { margin-top: 0.9rem; }
.login-form .btn { margin-top: 1.4rem; }
.login-note { color: var(--muted); font-size: 0.85rem; margin-top: 1.25rem; }

/* ===== tananyag-választó, KPI ===== */
.course-pills { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.pill {
  padding: 0.4rem 0.95rem; border-radius: 999px; background: var(--surface);
  border: 1px solid var(--border); color: var(--ink-2); font-size: 0.95rem;
}
.pill:hover { text-decoration: none; border-color: var(--accent); }
.pill-active { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }

.kpi-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0.75rem; margin-bottom: 1.25rem; }
.kpi {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.9rem 1rem;
}
.kpi-value { font-size: 1.7rem; font-weight: 700; }
.kpi-label { color: var(--muted); font-size: 0.85rem; }

/* ===== fejezetek ===== */
.start-card { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.start-form { display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; }
.chapter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 0.9rem; }
.chapter-card { margin-bottom: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.chapter-head { display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem; }
.chapter-count { color: var(--muted); font-size: 0.85rem; white-space: nowrap; }
.chapter-form { display: flex; gap: 0.5rem; margin-top: auto; }
.chapter-form select { flex: 1; }

.progress-bar {
  height: 10px; border-radius: 999px; background: var(--surface-2);
  overflow: hidden; display: flex;
}
.progress-bar .seg { height: 100%; }
.progress-bar .seg + .seg { margin-left: 2px; }
.seg-known { background: var(--state-known); }
.seg-learning { background: var(--state-learning); }
.progress-legend { display: flex; gap: 0.9rem; flex-wrap: wrap; font-size: 0.82rem; color: var(--ink-2); }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 0.25rem; }
.dot-known { background: var(--state-known); }
.dot-learning { background: var(--state-learning); }
.dot-fresh { background: var(--state-fresh); }

/* ===== gyakorlás ===== */
.practice-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 1rem; }
.practice-scope { color: var(--muted); }
.pool-info { display: flex; gap: 1.1rem; flex-wrap: wrap; color: var(--muted); font-size: 0.88rem; margin-bottom: 0.9rem; }
.pool-info b { color: var(--ink-2); }
.question-card { padding: 1.5rem; }
.question-meta { display: flex; gap: 0.5rem; margin-bottom: 0.9rem; flex-wrap: wrap; }
.question-text { font-size: 1.15rem; font-weight: 600; margin-bottom: 1.25rem; }
/* válaszlehetőségek: megfordítható kártyák */
.options {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.8rem;
  perspective: 1200px;
}
.flip-card {
  background: transparent; border: none; padding: 0; margin: 0;
  font: inherit; color: inherit; text-align: center; cursor: pointer;
  perspective: 1000px; min-height: 200px;
}
.flip-card:disabled { cursor: default; }
.flip-inner {
  position: relative; display: block; width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.4, 0.1, 0.2, 1);
}
.flip-card.flipped .flip-inner { transform: rotateY(180deg); }
.flip-face {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.55rem; padding: 1rem 0.85rem;
  border-radius: var(--radius); border: 1px solid var(--border);
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
}
.flip-front {
  position: relative; height: 100%;
  border-top: 3px solid var(--accent);
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.flip-card:not(.flipped):not(:disabled):hover .flip-front,
.flip-card:not(.flipped):focus-visible .flip-front {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
}
.flip-back {
  position: absolute; inset: 0; overflow: auto;
  transform: rotateY(180deg);
}
.flip-text { display: block; font-size: 0.95rem; line-height: 1.4; overflow-wrap: anywhere; }
.flip-icon {
  display: flex; align-items: center; justify-content: center;
  width: 2rem; height: 2rem; border-radius: 50%; flex: 0 0 auto;
  font-size: 1.15rem; font-weight: 700;
  background: var(--surface-2); color: var(--muted);
  border: 1px solid var(--border);
}
.flip-back.back-correct { border-color: var(--good); border-top: 3px solid var(--good); background: linear-gradient(160deg, rgba(12, 163, 12, 0.16), var(--surface)); }
.flip-back.back-correct .flip-icon { background: rgba(12, 163, 12, 0.2); color: #7fd88f; border-color: var(--good); }
.flip-back.back-wrong { border-color: var(--danger); border-top: 3px solid var(--danger); background: linear-gradient(160deg, rgba(208, 59, 59, 0.16), var(--surface)); }
.flip-back.back-wrong .flip-icon { background: rgba(208, 59, 59, 0.2); color: var(--bad); border-color: var(--danger); }
.flip-back.back-neutral { opacity: 0.75; border-top: 3px solid var(--state-fresh); }
@media (prefers-reduced-motion: reduce) {
  .flip-inner { transition: none; }
  .flip-card:not(.flipped):not(:disabled):hover .flip-front { transform: none; }
}
@media (max-width: 640px) {
  .options { grid-template-columns: 1fr; }
  .flip-card { min-height: 110px; }
}

.feedback { margin-top: 1.25rem; }
.feedback-banner {
  font-weight: 700; padding: 0.6rem 1rem; border-radius: var(--radius-sm); margin-bottom: 0.9rem;
}
.feedback-banner.fb-good { background: rgba(12, 163, 12, 0.14); color: #7fd88f; }
.feedback-banner.fb-bad { background: rgba(208, 59, 59, 0.14); color: var(--bad); }
.feedback-block { background: var(--surface-2); border-radius: var(--radius-sm); padding: 0.9rem 1rem; margin-bottom: 1rem; }
.source-line { color: var(--muted); font-size: 0.85rem; margin-bottom: 0; }
/* csoport-összehasonlítás */
.compare-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 0.9rem; margin-bottom: 1.25rem; }
.compare-card { margin-bottom: 0; }
.compare-head { display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem; margin-bottom: 0.7rem; }
.compare-row { display: grid; grid-template-columns: 1fr; gap: 0.2rem; margin-bottom: 0.55rem; font-size: 0.88rem; }
.compare-row b { font-variant-numeric: tabular-nums; }
.compare-label { color: var(--muted); }
.compare-bar { height: 12px; }
.seg-avg { background: var(--state-fresh); }
.compare-note { margin: 0.4rem 0 0; }

.report-area { margin-top: 0.9rem; border-top: 1px dashed var(--border); padding-top: 0.7rem; }
.report-area .btn-ghost { color: var(--muted); }
#report-form { display: grid; gap: 0.5rem; margin-top: 0.4rem; }
.report-actions { display: flex; gap: 0.5rem; }

.session-bar {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  color: var(--ink-2); font-size: 0.92rem; margin-top: 1rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.6rem 1rem;
}

/* ===== statisztika ===== */
.chart-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 0.9rem; }
.chart-card { margin-bottom: 0.9rem; }
.chart-box { position: relative; height: 260px; }
.chart-box-donut { height: 260px; }
@media (max-width: 800px) { .chart-grid { grid-template-columns: 1fr; } }

/* ===== táblázatok ===== */
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.data-table th, .data-table td {
  text-align: left; padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.data-table th { color: var(--muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; }
.data-table td.num, .data-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.data-table tr:last-child td { border-bottom: none; }
.cell-question { max-width: 420px; }
.actions { white-space: nowrap; }
.actions form { margin-right: 0.2rem; }

/* ===== admin ===== */
.admin-nav-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 0.9rem; margin-top: 1.25rem; }
.admin-nav-card { color: var(--ink); display: block; }
.admin-nav-card:hover { text-decoration: none; border-color: var(--accent); }
.admin-nav-card p { color: var(--muted); font-size: 0.9rem; margin-bottom: 0; }
.chapter-admin-head { display: flex; gap: 1rem; align-items: flex-start; }
.order-controls { display: flex; flex-direction: column; align-items: center; gap: 0.1rem; }
.order-num { color: var(--muted); font-size: 0.85rem; font-variant-numeric: tabular-nums; }
.chapter-admin-title { flex: 1; display: grid; gap: 0.4rem; }
.chapter-admin-meta { display: flex; gap: 0.7rem; align-items: center; flex-wrap: wrap; color: var(--muted); font-size: 0.88rem; }
.chapter-admin-actions {
  display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap;
  margin-top: 0.8rem; padding-top: 0.8rem; border-top: 1px solid var(--border);
}
.schedule-form { display: flex; gap: 0.5rem; align-items: flex-end; flex-wrap: wrap; }
.schedule-form label { font-size: 0.85rem; }
.access-details summary { cursor: pointer; color: var(--accent); }
.access-form { margin-top: 0.5rem; display: grid; gap: 0.2rem; min-width: 220px; }
.admin-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; }
@media (max-width: 860px) { .admin-two-col { grid-template-columns: 1fr; } }
.input-months { width: 4.2rem; padding: 0.3rem 0.4rem; }
.extend-form { display: inline-flex; gap: 0.25rem; align-items: center; }
.report-card { border-left: 3px solid var(--accent); }
.report-head { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.6rem; }
.report-question { font-weight: 600; }
.report-message { background: var(--surface-2); border-radius: var(--radius-sm); padding: 0.7rem 0.9rem; margin: 0.6rem 0; }
.report-message h3 { font-size: 0.85rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.report-message p { margin-bottom: 0; }

.issue-list { margin: 0.25rem 0 0.75rem; padding-left: 1.25rem; font-size: 0.9rem; color: var(--ink-2); }
.issue-list-error li { color: var(--bad); }
.flash-area:empty { display: none; }

/* ===== profil ===== */
.profile-grid {
  display: grid; grid-template-columns: auto 1fr; gap: 0.35rem 1.4rem;
  font-size: 0.95rem; align-items: baseline;
}
.profile-label { color: var(--muted); }
.version-badge { white-space: nowrap; }

/* ===== üres állapot ===== */
.empty-state {
  text-align: center; padding: 2.5rem 1rem; color: var(--muted);
  background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius);
  margin-bottom: 1rem;
}
.empty-state h2 { color: var(--ink-2); }

@media (max-width: 640px) {
  .topnav-inner { gap: 0.5rem; }
  .nav-email { display: none; }
  .question-card { padding: 1.1rem; }
}