/* Site studiu intrebari examen CAA — Mihai
   Paleta: albastru accent, paragraf intrebare albastru pal, corect verde. */
:root {
  --bg: #f6f8fb;
  --card: #ffffff;
  --ink: #1f2937;
  --muted: #64748b;
  --line: #e5e7eb;
  --accent: #2563eb;
  --accent-soft: #e8f1fb;   /* fundal paragraf intrebare (albastru pal) */
  --ok-bg: #dcfce7;
  --ok-ink: #166534;
  --ok-line: #16a34a;
  --bad-bg: #fee2e2;
  --bad-ink: #991b1b;
  --bad-line: #dc2626;
  --warn-bg: #fef3c7;
  --warn-ink: #92400e;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a; --card: #1e293b; --ink: #e2e8f0; --muted: #94a3b8; --line: #334155;
    --accent: #60a5fa; --accent-soft: #1e293b;
    --ok-bg: #14532d; --ok-ink: #bbf7d0; --ok-line: #22c55e;
    --bad-bg: #4c1d1d; --bad-ink: #fecaca; --bad-line: #f87171;
    --warn-bg: #422006; --warn-ink: #fde68a;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }   /* altfel .seg{display:inline-flex} suprascrie ascunderea */
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  line-height: 1.55;
}

/* ---- header ---- */
header.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  padding: .6rem 1rem;
}
.top-inner { max-width: 820px; margin: 0 auto; }
.bar-main { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; }
.brand { font-weight: 700; font-size: 1rem; white-space: nowrap; }
.bar-ctx { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-top: .5rem; }
.opts { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-top: .5rem; }
.icon-btn { display: none; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 8px; padding: .32rem .55rem; cursor: pointer; font: inherit; font-size: 1rem; line-height: 1; }
.seg { display: inline-flex; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 2px; box-shadow: var(--shadow); }
.seg button { border: 0; background: transparent; color: var(--muted); padding: .35rem .8rem; border-radius: 999px; cursor: pointer; font: inherit; font-size: .85rem; }
.seg button.active { background: var(--accent); color: #fff; }
#search { flex: 1 1 160px; min-width: 120px; padding: .45rem .7rem; border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--ink); font: inherit; font-size: .9rem; }
.seg.small button { padding: .3rem .6rem; font-size: .78rem; }
.linkbtn { border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: .35rem .7rem; border-radius: 8px; font: inherit; font-size: .8rem; text-decoration: none; cursor: pointer; display: inline-flex; align-items: center; gap: .25rem; }
.linkbtn:hover { border-color: var(--accent); }
.linkbtn.danger { color: var(--bad-ink); }
.who { font-size: .72rem; font-weight: 400; color: var(--muted); }
.countdown { margin-left: auto; font-size: .76rem; font-weight: 700; color: var(--accent); background: var(--accent-soft); padding: .22rem .6rem; border-radius: 999px; white-space: nowrap; }
.countdown.soon { color: #fff; background: var(--bad-line); }
.progress { max-width: 820px; margin: .5rem auto 0; height: 6px; background: var(--line); border-radius: 999px; overflow: hidden; }
.progress > span { display: block; height: 100%; width: 0; background: var(--ok-line); transition: width .3s; }
.progress-label { max-width: 820px; margin: .25rem auto 0; font-size: .75rem; color: var(--muted); }

/* ---- categorii ---- */
nav.cats { max-width: 820px; margin: .8rem auto 0; padding: 0 1rem; display: flex; flex-wrap: wrap; gap: .4rem; }
.cat-select { display: none; max-width: 820px; width: calc(100% - 1.4rem); margin: .6rem auto 0; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink); font: inherit; font-size: .85rem; }
nav.cats button { border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: .35rem .7rem; border-radius: 8px; cursor: pointer; font: inherit; font-size: .82rem; }
nav.cats button.active { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600; }
nav.cats button .c { color: var(--muted); font-weight: 400; }

/* ---- lista ---- */
main { max-width: 820px; margin: 1rem auto 4rem; padding: 0 1rem; }
.qcard { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: .9rem 1rem; margin-bottom: .9rem; box-shadow: var(--shadow); }
.qcard.learned { opacity: .6; }

/* paragraf intrebare — fundal albastru pal */
.qtext {
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: .7rem .85rem;
  margin: 0 0 .7rem;
  font-weight: 500;
}
.qtext .num { color: var(--accent); font-weight: 700; margin-right: .35rem; }

.answers { list-style: none; margin: 0; padding: 0; display: grid; gap: .4rem; }
.answers li {
  border: 1px solid var(--line); border-radius: 8px; padding: .5rem .7rem;
  display: flex; gap: .5rem; align-items: baseline;
}
.answers li .mark { flex: 0 0 auto; width: 1.2em; text-align: center; color: var(--muted); font-weight: 700; }
.answers li.correct { background: var(--ok-bg); border-color: var(--ok-line); color: var(--ok-ink); }
.answers li.correct .mark { color: var(--ok-line); }
.answers li.chosen-wrong { background: var(--bad-bg); border-color: var(--bad-line); color: var(--bad-ink); }
.answers li.chosen-wrong .mark { color: var(--bad-line); }
/* mod test: raspunsuri clickabile */
.answers.test li { cursor: pointer; }
.answers.test li:hover { border-color: var(--accent); }
.answers.revealed li { cursor: default; }

.meta { margin-top: .7rem; display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: center; font-size: .82rem; }
.badge { padding: .12rem .5rem; border-radius: 999px; font-size: .72rem; font-weight: 600; }
.badge.ok { background: var(--ok-bg); color: var(--ok-ink); }
.badge.flag { background: var(--warn-bg); color: var(--warn-ink); }
.badge.info { background: var(--accent-soft); color: var(--accent); }
.refs a { color: var(--accent); text-decoration: none; margin-right: .6rem; white-space: nowrap; }
.refs a:hover { text-decoration: underline; }
.learn-toggle { margin-left: auto; display: inline-flex; align-items: center; gap: .3rem; color: var(--muted); cursor: pointer; user-select: none; }

details.explain { margin-top: .6rem; border-top: 1px dashed var(--line); padding-top: .5rem; }
details.explain summary { cursor: pointer; color: var(--accent); font-size: .85rem; font-weight: 600; }
details.explain .body { margin-top: .5rem; font-size: .92rem; color: var(--ink); }
details.explain .body p { margin: 0 0 .55rem; }
details.explain .body p:last-child { margin-bottom: 0; }
details.explain .nota { margin-top: .4rem; font-size: .82rem; color: var(--warn-ink); background: var(--warn-bg); padding: .35rem .55rem; border-radius: 6px; }

.empty { text-align: center; color: var(--muted); padding: 3rem 1rem; }
.score { position: sticky; bottom: 0; background: var(--card); border-top: 1px solid var(--line); padding: .6rem 1rem; font-weight: 600; box-shadow: 0 -1px 3px rgba(0,0,0,.06); display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; justify-content: space-between; }
.score-btns { display: flex; gap: .4rem; flex-wrap: wrap; }
.btn.ghost { color: var(--muted); }
.seglbl { display: inline-flex; align-items: center; padding: 0 .5rem 0 .55rem; font-size: .78rem; color: var(--muted); }
.badge.streak { background: #fff7ed; color: #c2410c; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); background: #111827; color: #fff; padding: .6rem 1rem; border-radius: 10px; font-size: .88rem; box-shadow: 0 8px 24px rgba(0,0,0,.25); opacity: 0; transition: opacity .3s, transform .3s; z-index: 50; max-width: 90vw; text-align: center; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
@media (prefers-color-scheme: dark) { .badge.streak { background: #3b2413; color: #fdba74; } }

/* ---- telefon / tabletă ---- */
@media (max-width: 820px) {
  header.top { padding: .4rem .6rem; }
  .brand-txt { display: none; }                 /* doar ancora pe telefon */
  .brand { font-size: 1.1rem; }
  .bar-main { gap: .35rem; }
  .seg button { padding: .3rem .62rem; font-size: .8rem; }
  .countdown { font-size: .64rem; padding: .16rem .45rem; }
  .icon-btn { display: inline-flex; align-items: center; }
  .bar-ctx { margin-top: .4rem; gap: .35rem; }
  .seg.small button { padding: .4rem .55rem; font-size: .8rem; }
  .seglbl { padding: 0 .15rem 0 .4rem; font-size: .7rem; }
  .opts { display: none; margin-top: .4rem; }   /* ascunse până la ⚙ */
  .opts.open { display: flex; flex-direction: column; align-items: stretch; }
  .opts.open #search { flex-basis: auto; width: 100%; }
  .opts.open .linkbtn { width: 100%; justify-content: center; padding: .5rem; }
  .opts.open .who { font-size: .68rem; text-align: center; }
  .progress { margin-top: .4rem; }
  .progress-label { font-size: .68rem; margin-top: .2rem; }
  main { padding: 0 .7rem 4rem; }
  .qcard { padding: .8rem .7rem; }
  nav.cats { display: none; }                 /* pe telefon: dropdown, nu chips */
  .cat-select { display: block; }
  .answers li { padding: .6rem .7rem; }        /* ținte de atins mai mari */
  .score { flex-direction: column; align-items: stretch; gap: .5rem; padding: .6rem .7rem; }
  .score-txt { text-align: center; }
  .score-btns { width: 100%; display: flex; gap: .4rem; }
  .score-btns .btn { flex: 1; padding: .65rem .3rem; font-size: .8rem; }
}
@media (max-width: 380px) {
  .score-btns { flex-wrap: wrap; }
  .score-btns .btn { flex: 1 1 45%; }
}
.btn { border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: .3rem .7rem; border-radius: 8px; cursor: pointer; font: inherit; font-size: .8rem; }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.footer { max-width: 820px; margin: 2rem auto; padding: 0 1rem; color: var(--muted); font-size: .78rem; text-align: center; }
.footer a { color: var(--accent); }

/* ================= ECRANE (home / setup / run) ================= */
.screen { max-width: 820px; margin: 0 auto; }

/* --- HOME / MENIU --- */
.home-inner { padding: 2rem 1.2rem 1rem; display: flex; flex-direction: column; min-height: 100vh; }
.home-head { display: flex; align-items: center; justify-content: space-between; gap: .8rem; flex-wrap: wrap; }
.brand-big { font-size: 1.5rem; font-weight: 800; }
.home-who { font-size: .76rem; color: var(--muted); margin: .4rem 0 1.8rem; }
.home-menu { display: flex; flex-direction: column; gap: 1rem; }
.home-card { display: flex; align-items: center; gap: 1rem; text-align: left; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 1.2rem 1.3rem; cursor: pointer; text-decoration: none; color: var(--ink); box-shadow: var(--shadow); transition: transform .12s, border-color .12s; font: inherit; }
.home-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.home-card .hc-ico { font-size: 1.9rem; line-height: 1; }
.home-card .hc-txt { display: flex; flex-direction: column; gap: .2rem; }
.home-card .hc-txt b { font-size: 1.15rem; }
.home-card .hc-txt small { font-size: .82rem; color: var(--muted); }
.home-reset { margin-top: auto; align-self: center; background: none; border: 0; color: var(--muted); font: inherit; font-size: .78rem; cursor: pointer; padding: 1.5rem .5rem .5rem; }

/* --- bara ecran (setup / run) --- */
.screen-bar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: .8rem; padding: .7rem 1rem; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.back-btn { background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: .45rem .9rem; font: inherit; font-size: .85rem; color: var(--ink); cursor: pointer; white-space: nowrap; }
.back-btn:hover { border-color: var(--accent); color: var(--accent); }
.screen-bar h2, .run-title { font-size: 1rem; font-weight: 600; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* --- SETUP --- */
.setup-inner { padding: 1.4rem 1.2rem; display: flex; flex-direction: column; gap: 1.4rem; }
.setup-block { display: flex; flex-direction: column; gap: .55rem; }
.setup-lbl { font-size: .78rem; color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: .03em; }
.chip-list { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip-list .chip { border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: .55rem .85rem; border-radius: 10px; cursor: pointer; font: inherit; font-size: .9rem; }
.chip-list .chip.active { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.chip-list .chip:disabled { opacity: .4; cursor: not-allowed; }
.chip-list .chip .c { color: var(--muted); font-weight: 400; }
.start-btn { margin-top: .4rem; background: var(--accent); color: #fff; border: 0; border-radius: 12px; padding: .95rem; font: inherit; font-size: 1.05rem; font-weight: 700; cursor: pointer; }
.start-btn:hover { filter: brightness(1.05); }

/* --- RUN --- */
.run-ctx { max-width: 820px; margin: .7rem auto 0; padding: 0 1rem; display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.run-ctx:empty { margin: 0; }
.run-search { flex: 1 1 160px; min-width: 120px; padding: .45rem .7rem; border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--ink); font: inherit; font-size: .9rem; }
#run .progress, #run .progress-label { margin-top: .5rem; }

@media (max-width: 560px) {
  .home-inner { padding: 1.6rem 1rem 1rem; }
  .brand-big { font-size: 1.3rem; }
  .home-card { padding: 1.05rem 1.1rem; border-radius: 14px; }
  .home-card .hc-ico { font-size: 1.7rem; }
  .setup-inner { padding: 1.1rem; gap: 1.1rem; }
  .run-ctx { padding: 0 .7rem; }
  .screen-bar { padding: .6rem .7rem; }
}