:root {
  --bg: #f6f5f1; --card: #ffffff; --ink: #1d1d1b; --muted: #6b6a66; --line: #e2e0d9;
  --accent: #1f5f8b; --accent-ink: #ffffff; --ok: #2e7d4f; --warn: #b4530a; --bad: #b3261e;
  --soft: #eef3f7; --radius: 12px; --maxw: 860px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-ar: "Noto Naskh Arabic", "Geeza Pro", "Al Bayan", "Segoe UI", Tahoma, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #171716; --card: #222220; --ink: #ecebe6; --muted: #a3a29c; --line: #37362f;
          --accent: #6fb0dc; --accent-ink: #0f1a22; --soft: #263038; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.5; }
.hidden { display: none !important; }
a { color: var(--accent); }
button { font: inherit; }

.top { position: sticky; top: 0; z-index: 20; background: var(--card); border-bottom: 1px solid var(--line); }
.top-inner { max-width: var(--maxw); margin: 0 auto; padding: 10px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.brand { font-weight: 600; font-size: 14px; letter-spacing: .01em; color: var(--muted); }
.top-right { display: flex; align-items: center; gap: 10px; font-size: 14px; flex-wrap: wrap; }
.progress-wrap { height: 4px; background: var(--line); }
.progress-bar { height: 100%; width: 0; background: var(--accent); transition: width .3s; }

.app { max-width: var(--maxw); margin: 0 auto; padding: 20px 16px 120px; }
.loading { color: var(--muted); padding: 40px 0; text-align: center; }

h1 { font-size: 24px; margin: 8px 0 12px; line-height: 1.25; }
h2 { font-size: 19px; margin: 24px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 6px; }
p { margin: 8px 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
code { background: var(--soft); padding: 1px 5px; border-radius: 4px; font-size: .92em; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin: 14px 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 18px; border-radius: 8px;
       border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; min-height: 42px; }
.btn:hover { border-color: var(--accent); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.btn.danger { background: var(--bad); color: #fff; border-color: var(--bad); font-weight: 600; }
.btn.link { border: none; background: none; color: var(--accent); padding: 6px 8px; min-height: 0; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spread { justify-content: space-between; }

/* landing */
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin: 14px 0 22px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.tile .name { font-weight: 600; }
.pill { display: inline-block; font-size: 12px; padding: 2px 9px; border-radius: 999px; background: var(--soft); color: var(--muted); margin-top: 6px; }
.pill.in_progress { color: var(--warn); }
.pill.submitted { color: var(--ok); }
.login { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.login input { flex: 1 1 260px; padding: 11px 14px; font: inherit; font-size: 17px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink); letter-spacing: .02em; }
.error { color: var(--bad); margin-top: 8px; }

/* instructions */
.prose h1 { font-size: 22px; }
.prose ul { padding-left: 22px; }
.prose li { margin: 4px 0; }
.ack { display: flex; gap: 10px; align-items: flex-start; margin: 18px 0; }
.ack input { width: 20px; height: 20px; margin-top: 3px; }

/* post card */
.post-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.post-num { font-size: 20px; font-weight: 700; }
.post-meta { color: var(--muted); font-size: 13px; }
.post-text { white-space: pre-wrap; overflow-wrap: anywhere; background: var(--soft); border-radius: 10px; padding: 16px 18px; font-size: 17px; line-height: 1.6; max-height: 60vh; overflow: auto; }
.post-text[dir="rtl"] { font-family: var(--font-ar); font-size: 20px; line-height: 1.9; text-align: right; }
.q { margin-top: 22px; }
.q-title { font-weight: 700; font-size: 17px; display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.q-hint { color: var(--muted); font-size: 13px; }
.opts { display: grid; grid-template-columns: 1fr; gap: 6px; margin-top: 10px; }
@media (min-width: 640px) { .opts { grid-template-columns: 1fr 1fr; } }
.opt { display: flex; gap: 10px; align-items: flex-start; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; background: var(--card); }
.opt:hover { border-color: var(--accent); }
.opt.on { border-color: var(--accent); background: var(--soft); }
.opt input { margin-top: 4px; }
.opt .lbl { font-weight: 600; font-size: 15px; }
.opt .gloss { display: block; color: var(--muted); font-size: 12.5px; line-height: 1.35; }
.opt.escape .lbl::after { content: " · note required"; color: var(--warn); font-weight: 500; font-size: 12px; }
textarea { width: 100%; min-height: 72px; padding: 10px 12px; font: inherit; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink); resize: vertical; }
textarea.required-missing { border-color: var(--warn); }
.need-note { color: var(--warn); font-size: 13px; margin-top: 4px; }
.card-foot { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 18px; flex-wrap: wrap; }
.save-state { font-size: 13px; color: var(--muted); min-width: 90px; }
.save-state.err { color: var(--bad); }
.disabled-card .opt, .disabled-card textarea { pointer-events: none; opacity: .75; }

/* post map */
.map { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 2px; }
.map button { width: 34px; height: 34px; border-radius: 7px; border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; font-size: 13px; }
.map button.done { background: var(--ok); color: #fff; border-color: var(--ok); }
.map button.partial { background: var(--warn); color: #fff; border-color: var(--warn); }
.map button.current { outline: 3px solid var(--accent); outline-offset: 1px; }
.legend { font-size: 12px; color: var(--muted); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin: 0 3px 0 8px; vertical-align: middle; }

/* fab + modal */
.fab { position: fixed; right: 18px; bottom: 18px; z-index: 30; padding: 12px 20px; border-radius: 999px; border: none; background: var(--accent); color: var(--accent-ink); font-weight: 700; box-shadow: 0 6px 20px rgba(0,0,0,.2); cursor: pointer; }
.modal { position: fixed; inset: 0; z-index: 40; display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.45); }
.modal-card { position: relative; background: var(--card); border-radius: 14px; width: min(900px, 100%); max-height: 90vh; display: flex; flex-direction: column; box-shadow: 0 20px 60px rgba(0,0,0,.35); }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 10px 12px 10px 16px; border-bottom: 1px solid var(--line); }
.tabs { display: flex; gap: 4px; }
.tabs button { border: none; background: none; padding: 8px 12px; border-radius: 8px; cursor: pointer; color: var(--muted); font-weight: 600; }
.tabs button.on { background: var(--soft); color: var(--ink); }
.icon-btn { border: none; background: none; font-size: 18px; cursor: pointer; color: var(--muted); padding: 6px 10px; }
.modal-body { overflow: auto; padding: 8px 20px 20px; }
.missing-list { padding-left: 20px; }
.missing-list li { margin: 4px 0; }
.done-box { text-align: center; padding: 40px 20px; }
.done-box .big { font-size: 44px; }