[hidden] { display: none !important; }
:root {
  --bg: #1c1b19; --card: #262421; --card2: #2f2c28; --line: #3a3631;
  --text: #ece6dc; --muted: #a59d90; --accent: #e8a046; --accent-ink: #1c1b19;
  --ok: #8fbf6a; --bad: #e0705a;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: 88px;
}
.top, main { max-width: 720px; margin: 0 auto; padding: 0 16px; }
.top { padding-top: 28px; padding-bottom: 8px; }
h1 { margin: 0 0 4px; font-size: 1.5rem; letter-spacing: -.01em; }
h1::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); margin-right: 10px; vertical-align: middle; }
.meta { margin: 0; color: var(--accent); font-weight: 600; font-size: .9rem; }
.desc { color: var(--muted); font-size: .95rem; }
.q, .r { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 14px 10px; margin: 0 0 12px; }
.q.answered { border-color: #4a4238; }
legend, .r h3 { font-weight: 600; padding: 0; margin-bottom: 10px; font-size: 1rem; display: flex; gap: 10px; }
.r h3 { margin: 0 0 8px; }
.num { flex: none; min-width: 26px; height: 26px; border-radius: 8px; background: var(--card2); color: var(--accent); display: inline-grid; place-items: center; font-size: .8rem; }
.q legend { float: left; width: 100%; }
.q legend + * { clear: both; }
.opt { display: flex; align-items: center; gap: 12px; padding: 11px 12px; margin: 6px 0; border-radius: 10px; background: var(--card2); border: 1px solid transparent; cursor: pointer; }
.opt input { accent-color: var(--accent); width: 18px; height: 18px; margin: 0; flex: none; }
.opt:has(input:checked) { border-color: var(--accent); background: #3a3027; }
.bar { position: fixed; left: 0; right: 0; bottom: 0; background: rgba(28,27,25,.96); border-top: 1px solid var(--line); padding: 12px 16px calc(12px + env(safe-area-inset-bottom)); display: flex; justify-content: center; align-items: center; gap: 16px; }
#progress { color: var(--muted); font-variant-numeric: tabular-nums; }
button { font: inherit; font-weight: 700; border: 0; border-radius: 10px; padding: 11px 22px; background: var(--accent); color: var(--accent-ink); cursor: pointer; }
button:disabled { background: var(--card2); color: var(--muted); cursor: not-allowed; }
.score { text-align: center; padding: 18px 0 22px; }
.big { font-size: 4.5rem; font-weight: 800; line-height: 1; color: var(--accent); }
.big span { font-size: 2rem; color: var(--muted); }
.score p { color: var(--muted); }
.r.ok { border-left: 4px solid var(--ok); }
.r.bad { border-left: 4px solid var(--bad); }
.line { margin: 4px 0; }
.r.ok .line b { color: var(--ok); }
.r.bad .line b { color: var(--bad); }
.r.bad .line + .line b { color: var(--ok); }
.fb { margin: 8px 0 4px; padding: 10px 12px; background: var(--card2); border-radius: 10px; color: var(--text); font-size: .95rem; }
.tense { color: var(--accent); font-weight: 700; }

/* ---- v2: tabs, grammar, practice ---- */
.top { position: sticky; top: 0; z-index: 5; background: rgba(28,27,25,.97); border-bottom: 1px solid var(--line); padding-top: 18px; padding-bottom: 0; max-width: none; }
.top > * { max-width: 688px; margin-left: auto; margin-right: auto; }
.tabs { display: flex; gap: 4px; margin-top: 10px; overflow-x: auto; scrollbar-width: none; }
.tabs a { flex: 1 0 auto; text-align: center; padding: 10px 12px; color: var(--muted); text-decoration: none; font-weight: 600; font-size: .92rem; border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a[aria-selected="true"] { color: var(--accent); border-bottom-color: var(--accent); }
.view { padding-top: 16px; }
a { color: var(--accent); }
a.tense { text-decoration: none; border-bottom: 1px dashed var(--accent); }
.review { font-size: .95rem; }
.actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
button.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }

.search, select, .pform input[type=text] { font: inherit; color: var(--text); background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; width: 100%; }
.search { margin-bottom: 8px; }
.search:focus, select:focus, .pform input:focus { outline: none; border-color: var(--accent); }
.ghead { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 18px 0 8px; }
.gcard { background: var(--card); border: 1px solid var(--line); border-radius: 14px; margin: 0 0 10px; scroll-margin-top: 120px; }
.gcard[open] { border-color: #4a4238; }
.gcard summary { list-style: none; cursor: pointer; padding: 13px 14px; display: flex; flex-direction: column; gap: 2px; }
.gcard summary::-webkit-details-marker { display: none; }
.gname { font-weight: 700; color: var(--text); }
.gname::after { content: " ›"; color: var(--accent); }
.gcard[open] .gname::after { content: " ⌄"; }
.guse { color: var(--muted); font-size: .92rem; }
.gbody { padding: 0 14px 14px; font-size: .95rem; }
.gbody p { margin: 4px 0; } .gbody ul { margin: 2px 0 6px; padding-left: 20px; }
.glabel { color: var(--accent); font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; font-weight: 700; margin-top: 10px !important; }
.gform { list-style: none; padding-left: 0 !important; display: flex; flex-wrap: wrap; gap: 6px; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .88rem; background: var(--card2); padding: 3px 8px; border-radius: 6px; color: var(--text); }
.gid { background: #3a3027; border-radius: 10px; padding: 9px 11px; margin-top: 10px !important; }
.gtrap { color: var(--muted); font-size: .9rem; margin-top: 8px !important; }
.gpractice { display: inline-block; margin-top: 10px; font-weight: 700; text-decoration: none; }

.pform { margin-bottom: 14px; }
.pform.collapsed > :not(.status):not(#pgo) { display: none; }
.pform.collapsed #pgo { display: none; }
.chipgroup { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 0 0 10px; }
.chiplabel { width: 100%; color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip span { display: inline-block; padding: 7px 12px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); font-size: .88rem; cursor: pointer; }
.chip input:checked + span { background: #3a3027; border-color: var(--accent); color: var(--accent); }
.chip input:focus-visible + span { outline: 2px solid var(--accent); }
.row { display: flex; gap: 10px; flex-wrap: wrap; margin: 6px 0 14px; }
.row label { display: flex; flex-direction: column; gap: 4px; font-size: .8rem; color: var(--muted); min-width: 100px; }
.row label.grow { flex: 1 1 180px; }
#pgo { width: 100%; }
.status { color: var(--muted); font-size: .92rem; min-height: 1.3em; }