/* EchoDeck — light SaaS design system. */
:root {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --panel-2: #f3f4f6;
  --ink: #111827;
  --ink-2: #374151;
  --muted: #6b7280;
  --line: #e5e7eb;
  --line-2: #eef0f3;
  --accent: #4f46e5;
  --accent-weak: #eef2ff;
  --accent-2: #059669;
  --accent-2-weak: #ecfdf5;
  --warn: #d97706;
  --danger: #dc2626;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .05);
  --shadow-md: 0 4px 12px rgba(16, 24, 40, .08), 0 2px 6px rgba(16, 24, 40, .04);
  --shadow-lg: 0 16px 40px rgba(16, 24, 40, .14);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---- top bar ---- */
.topbar {
  display: flex; align-items: center; gap: 18px;
  padding: 12px 24px; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: rgba(255, 255, 255, .85); backdrop-filter: blur(10px); z-index: 5;
}
.brand { font-weight: 700; font-size: 17px; letter-spacing: -.2px; display: flex; align-items: center; gap: 8px; }
.logo {
  display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #7c74ff); color: #fff; font-size: 14px;
}
.tagline { color: var(--muted); font-weight: 400; font-size: 12.5px; margin-left: 4px; }
@media (max-width: 760px) { .tagline { display: none; } }

.search-box {
  width: 220px; margin: 0 0 0 auto; background: var(--panel-2); border: 1px solid var(--line);
  border-radius: 999px; padding: 8px 14px; font-size: 13px; transition: width .15s, box-shadow .15s, background .15s;
}
.search-box:focus { width: 280px; background: #fff; box-shadow: 0 0 0 3px var(--accent-weak); }
@media (max-width: 700px) { .search-box { width: 120px; } .search-box:focus { width: 150px; } }

.tabs { display: flex; gap: 4px; align-items: center; }
.tab {
  background: transparent; color: var(--muted); border: 1px solid transparent;
  padding: 7px 13px; border-radius: 8px; cursor: pointer; font-size: 14px; font-weight: 500;
  transition: background .12s, color .12s;
}
.tab:hover { color: var(--ink); background: var(--panel-2); }
.tab.is-active { color: var(--accent); background: var(--accent-weak); }
#ws-btn { color: var(--ink-2); border: 1px solid var(--line); margin-left: 4px; }
#ws-btn:hover { background: var(--panel-2); }
#pricing-tab { color: var(--accent-2); }

/* ---- layout ---- */
main { max-width: 1080px; margin: 0 auto; padding: 28px 24px 60px; }
.view { display: none; }
.view.is-active { display: block; }
.grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 20px; }
@media (max-width: 820px) { .grid { grid-template-columns: 1fr; } }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; box-shadow: var(--shadow-sm); }
.card { box-shadow: var(--shadow-md); }
h2 { margin: 0 0 12px; font-size: 17px; font-weight: 650; letter-spacing: -.2px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.center { text-align: center; padding: 40px 18px; }
.hidden { display: none !important; }
code { background: var(--panel-2); padding: 1px 6px; border-radius: 6px; font-size: 12.5px; color: var(--ink-2); }
hr { border: none; border-top: 1px solid var(--line); margin: 16px 0; }
a { color: var(--accent); }

/* ---- forms ---- */
label { display: block; margin: 14px 0 0; font-size: 13px; font-weight: 500; color: var(--ink-2); }
label.inline { display: inline-flex; align-items: center; gap: 8px; margin: 0; color: var(--muted); }
input, textarea, select {
  width: 100%; margin-top: 6px; background: #fff; color: var(--ink);
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font: inherit;
  transition: border-color .12s, box-shadow .12s;
}
input::placeholder, textarea::placeholder { color: #9ca3af; }
label.inline input, label.inline select { width: auto; margin-top: 0; }
textarea { resize: vertical; font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 13px; line-height: 1.5; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-weak); }

.row { display: flex; gap: 8px; align-items: center; }
.row.between { justify-content: space-between; margin-top: 18px; }

/* ---- buttons ---- */
button { cursor: pointer; font: inherit; border-radius: 10px; border: 1px solid var(--line); transition: background .12s, border-color .12s, box-shadow .12s, transform .05s; }
button:active { transform: translateY(.5px); }
.primary { background: var(--accent); color: #fff; border-color: transparent; padding: 10px 16px; font-weight: 600; box-shadow: var(--shadow-sm); }
.primary:hover { background: #4338ca; }
.primary:disabled { background: var(--panel-2); color: var(--muted); box-shadow: none; cursor: default; }
.ghost { background: #fff; color: var(--ink-2); padding: 9px 14px; font-weight: 500; }
.ghost:hover { background: var(--panel-2); border-color: #d8dbe0; }
.small { font-size: 12.5px; }
button.small { padding: 6px 11px; }
.wide { width: 100%; }
.error { color: var(--danger); min-height: 18px; margin: 8px 0 0; font-size: 13px; }

/* ---- deck list ---- */
.deck-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.deck-item {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 13px 15px; transition: border-color .12s, box-shadow .12s;
}
.deck-item:hover { border-color: #d8dbe0; box-shadow: var(--shadow-sm); }
.deck-item .title { font-weight: 600; }
.deck-item .sub { color: var(--muted); font-size: 12.5px; margin-top: 2px; }
.deck-item .open { background: transparent; border: none; color: var(--accent); font-weight: 600; padding: 4px 6px; }
.pill { font-size: 11px; background: var(--accent-2-weak); color: var(--accent-2); border-radius: 999px; padding: 2px 9px; font-weight: 600; }
.del { background: transparent; border: none; color: var(--muted); font-size: 16px; padding: 2px 6px; }
.del:hover { color: var(--danger); }

/* ---- study ---- */
.study-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.study-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.study-actions select { width: auto; }
.badge { background: var(--accent); color: #fff; border-radius: 999px; padding: 1px 7px; font-size: 11.5px; font-weight: 600; margin-left: 4px; }
.alert-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 16px; }

.card-list { display: flex; flex-direction: column; gap: 10px; }
.scard { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; box-shadow: var(--shadow-sm); }
.scard .front { font-size: 17px; line-height: 1.4; }
.scard .meta { color: var(--muted); font-size: 12px; margin-top: 6px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.scard .back-input { margin-top: 12px; }
.scard .tools { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.scard .tools button { padding: 7px 13px; }
.timecode { font-variant-numeric: tabular-nums; }
.due-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-2); display: inline-block; }
.scard.flash-hit { animation: flashHit 1.6s ease; }
@keyframes flashHit { 0%, 30% { box-shadow: 0 0 0 3px var(--accent-weak), 0 0 0 1px var(--accent); } 100% { box-shadow: var(--shadow-sm); } }

mark { background: #fef3c7; color: #92400e; border-radius: 3px; padding: 0 2px; }
.deck-chip { font-size: 11px; background: var(--accent-weak); border: 1px solid #e0e3ff; border-radius: 999px; padding: 2px 9px; color: var(--accent); font-weight: 600; }
.cloze-chip { background: var(--accent-weak); border: 1px solid #e0e3ff; border-radius: 999px; padding: 1px 9px; color: var(--accent); font-weight: 600; }
.cloze-x { background: transparent; border: none; color: var(--muted); font-size: 14px; padding: 0 0 0 2px; line-height: 1; }
.cloze-x:hover { color: var(--danger); }

.share-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; background: var(--accent-weak); border: 1px solid #e0e3ff; border-radius: 12px; padding: 10px 12px; }
.share-bar input { flex: 1; margin: 0; font-size: 13px; background: #fff; }
.share-bar a.ghost { display: inline-flex; align-items: center; }

/* ---- stats ---- */
.metric-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 6px 0 18px; }
@media (max-width: 700px) { .metric-row { grid-template-columns: repeat(2, 1fr); } }
.metric { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 18px; box-shadow: var(--shadow-sm); }
.metric .value { font-size: 30px; font-weight: 700; line-height: 1.05; letter-spacing: -1px; }
.metric .label { color: var(--muted); font-size: 12.5px; margin-top: 6px; }
.metric .value .unit { font-size: 14px; color: var(--muted); font-weight: 600; margin-left: 3px; letter-spacing: 0; }
.chart-panel { margin-bottom: 16px; }
.chart { display: flex; align-items: flex-end; gap: 6px; height: 150px; margin-top: 14px; }
.bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.bar { width: 100%; max-width: 30px; background: var(--accent); border-radius: 6px 6px 0 0; min-height: 2px; transition: height .25s; position: relative; }
.bar.forecast { background: var(--accent-2); }
.bar .n { position: absolute; top: -18px; left: 50%; transform: translateX(-50%); font-size: 11px; color: var(--muted); font-weight: 600; }
.bar-col .lbl { font-size: 10px; color: var(--muted); white-space: nowrap; }
.reminder-panel { margin-top: 16px; }
.reminder-preview { background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 12px; white-space: pre-wrap; font-size: 13px; margin: 10px 0 0; color: var(--ink-2); }

/* ---- pricing ---- */
.plan-line { display: flex; align-items: center; justify-content: space-between; margin-top: 10px; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 16px; }
@media (max-width: 760px) { .pricing-grid { grid-template-columns: 1fr; } }
.plan-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 24px; display: flex; flex-direction: column; box-shadow: var(--shadow-sm); }
.plan-card.current { border-color: var(--accent); }
.plan-card.featured { border-color: var(--accent); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.plan-card h3 { margin: 0; font-size: 18px; }
.plan-card .price { font-size: 34px; font-weight: 750; margin: 10px 0; letter-spacing: -1px; }
.plan-card .price span { font-size: 14px; color: var(--muted); font-weight: 500; letter-spacing: 0; }
.plan-card .blurb { color: var(--muted); font-size: 13px; min-height: 38px; }
.plan-card ul { list-style: none; padding: 0; margin: 14px 0; display: flex; flex-direction: column; gap: 8px; font-size: 13.5px; color: var(--ink-2); }
.plan-card li::before { content: "✓"; color: var(--accent-2); font-weight: 700; margin-right: 7px; }
.plan-card li.off { color: #9ca3af; }
.plan-card li.off::before { content: "–"; color: #c7ccd3; }
.plan-card .cta { margin-top: auto; }
.plan-card .cta button { width: 100%; padding: 11px; }
.plan-badge { align-self: flex-start; font-size: 11px; background: var(--accent); color: #fff; border-radius: 999px; padding: 3px 10px; font-weight: 600; margin-bottom: 8px; }

/* ---- workspace panel ---- */
.ws-panel { position: absolute; top: 60px; right: 16px; width: 340px; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 18px; box-shadow: var(--shadow-lg); z-index: 30; }
.ws-panel h3 { margin: 0 0 10px; font-size: 14px; font-weight: 650; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); }
.ws-panel input { font-size: 12.5px; }
.ws-panel select { width: auto; font-size: 12.5px; }
.member-list { list-style: none; margin: 0 0 10px; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.member-list li { display: flex; align-items: center; justify-content: space-between; background: var(--panel-2); border: 1px solid var(--line); border-radius: 9px; padding: 7px 11px; font-size: 13px; }
.member-list .role { font-size: 10.5px; color: var(--accent); margin-left: 6px; font-weight: 600; text-transform: uppercase; letter-spacing: .3px; }
.member-list .revoke { background: transparent; border: none; color: var(--muted); font-size: 15px; }
.member-list .revoke:hover { color: var(--danger); }

/* read-only viewers */
body.readonly #view-build,
body.readonly #cloze-btn,
body.readonly #share-btn,
body.readonly #review-btn,
body.readonly .save,
body.readonly .cloze-x,
body.readonly #build-form { display: none !important; }
body.readonly .back-input { pointer-events: none; opacity: .7; }

/* ---- review overlay ---- */
.overlay { position: fixed; inset: 0; background: rgba(17, 24, 39, .45); backdrop-filter: blur(3px); display: flex; align-items: center; justify-content: center; z-index: 20; }
.review-box { position: relative; width: min(560px, 92vw); background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 30px; text-align: center; box-shadow: var(--shadow-lg); }
.close { position: absolute; top: 12px; right: 14px; background: transparent; border: none; color: var(--muted); font-size: 24px; }
.review-progress { color: var(--muted); font-size: 12px; margin-bottom: 16px; font-weight: 500; }
.review-front { font-size: 27px; line-height: 1.35; margin: 12px 0; letter-spacing: -.3px; }
.review-back { font-size: 18px; color: var(--accent-2); margin: 8px 0 4px; white-space: pre-wrap; }
.shadow-controls { display: flex; gap: 12px; align-items: center; justify-content: center; margin: 20px 0; }
.review-buttons { margin-top: 20px; }
.grades { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.grades button { padding: 12px 0; color: #fff; font-weight: 600; border: none; }
.g-again { background: #ef4444; } .g-hard { background: #f59e0b; }
.g-good { background: #10b981; } .g-easy { background: var(--accent); }

/* --- marketplace --- */
.mkt-toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 4px 0 16px; }
.mkt-toolbar input, .mkt-toolbar select { padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px; font: inherit; background: #fff; }
.mkt-toolbar input { flex: 1; min-width: 200px; }
.mkt-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.mkt-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 18px; display: flex; flex-direction: column; box-shadow: var(--shadow-sm); }
.mkt-card:hover { border-color: #d8dbe0; box-shadow: var(--shadow-md); }
.mkt-card h3 { margin: 0 0 2px; font-size: 16px; }
.mkt-card .creator { color: var(--muted); font-size: 12.5px; }
.mkt-card .desc { color: var(--ink-2); font-size: 13px; margin: 10px 0; min-height: 34px; }
.mkt-card .mkt-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.mkt-card .cta { margin-top: auto; display: flex; gap: 8px; }
.mkt-card .cta .primary { flex: 1; }
.mkt-empty { color: var(--muted); text-align: center; padding: 40px 0; }
.mkt-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.mkt-bar input { flex: 1; min-width: 180px; padding: 8px 11px; border: 1px solid var(--line); border-radius: 10px; font: inherit; }
body.readonly #list-btn, body.readonly #mkt-bar { display: none !important; }

/* --- pronunciation scoring --- */
.pronounce-result { margin-top: 14px; text-align: left; }
.pronounce-result.hidden { display: none; }
.pron-score { font-size: 28px; font-weight: 750; letter-spacing: -0.5px; }
.pron-score .unit { font-size: 15px; color: var(--muted); font-weight: 600; }
.pron-grade { font-size: 13px; color: var(--muted); margin-left: 8px; }
.pron-words { margin: 10px 0 4px; line-height: 1.9; }
.pron-words .w { padding: 1px 4px; border-radius: 6px; }
.pron-words .w.ok { background: var(--accent-2-weak); color: var(--accent-2); }
.pron-words .w.miss { background: #fef2f2; color: var(--danger); text-decoration: underline dotted; }
.pron-heard { font-size: 12.5px; color: var(--muted); }
.pron-listening { color: var(--accent); font-weight: 600; }
#rev-record.recording { background: #fef2f2; border-color: #fecaca; color: var(--danger); }
#grade-buttons button.suggested { outline: 3px solid var(--ink); outline-offset: 2px; }

/* --- AI card fill --- */
.card-notes { margin-top: 8px; font-size: 12.5px; color: var(--accent-2); background: var(--accent-2-weak); border-radius: 8px; padding: 6px 10px; }
.card-notes.hidden { display: none; }
.scard .ai { color: var(--accent); }
body.readonly #ai-fill-btn, body.readonly .scard .ai { display: none !important; }

/* --- creator analytics --- */
.creator-summary { background: var(--accent-weak); border: 1px solid #e0e3ff; color: var(--ink-2); border-radius: 10px; padding: 8px 12px; font-size: 13px; margin: 0 0 12px; }
.creator-summary.hidden { display: none; }