/* PrepLoop styles. Plain CSS, light and dark themes via prefers-color-scheme. */

/* ---- Design tokens ---- */

:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f2f4f8;
  --border: #e5e7ef;
  --border-strong: #d3d7e3;
  --text: #111827;
  --text-2: #374151;
  --muted: #6b7280;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-soft: #eef0ff;
  --accent-text: #4338ca;
  --on-accent: #ffffff;
  --good: #059669;
  --good-soft: #e7f8f1;
  --warn: #d97706;
  --warn-soft: #fff4e5;
  --bad: #dc2626;
  --bad-soft: #fdecec;
  --tech: #2563eb;
  --tech-soft: #eaf1ff;
  --behav: #9333ea;
  --behav-soft: #f5edff;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgb(16 24 40 / 0.05);
  --shadow: 0 1px 3px rgb(16 24 40 / 0.06), 0 1px 2px rgb(16 24 40 / 0.04);
  --shadow-lg: 0 20px 40px -12px rgb(16 24 40 / 0.25);
  --focus: 0 0 0 3px rgb(79 70 229 / 0.25);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", Inter, Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0c10;
    --surface: #14161c;
    --surface-2: #1b1e26;
    --border: #252935;
    --border-strong: #333849;
    --text: #f3f4f6;
    --text-2: #d1d5db;
    --muted: #9ca3af;
    --accent: #818cf8;
    --accent-hover: #a5b4fc;
    --accent-soft: rgb(129 140 248 / 0.14);
    --accent-text: #a5b4fc;
    --on-accent: #0b0c10;
    --good: #34d399;
    --good-soft: rgb(52 211 153 / 0.12);
    --warn: #fbbf24;
    --warn-soft: rgb(251 191 36 / 0.12);
    --bad: #f87171;
    --bad-soft: rgb(248 113 113 / 0.12);
    --tech: #60a5fa;
    --tech-soft: rgb(96 165 250 / 0.12);
    --behav: #c084fc;
    --behav-soft: rgb(192 132 252 / 0.12);
    --shadow-sm: none;
    --shadow: 0 0 0 1px rgb(255 255 255 / 0.02);
    --shadow-lg: 0 24px 48px -12px rgb(0 0 0 / 0.6);
    --focus: 0 0 0 3px rgb(129 140 248 / 0.35);
  }
}

/* ---- Base ---- */

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
}

[hidden] { display: none !important; }

h1, h2, h3, h4 { margin: 0; line-height: 1.25; letter-spacing: -0.01em; }

p { margin: 0; }

code, pre, kbd { font-family: var(--mono); }

.icon {
  width: 18px;
  height: 18px;
  flex: none;
}

.muted { color: var(--muted); }
.small { font-size: 13px; }
.sub { color: var(--muted); font-size: 14px; }
.spacer { flex: 1; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

:focus-visible { outline: none; box-shadow: var(--focus); }

/* ---- Buttons ---- */

button { font: inherit; color: inherit; cursor: pointer; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 38px;
  padding: 0 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font-weight: 550;
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.05s;
}

.btn:hover { background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: progress; }
.btn .icon { width: 16px; height: 16px; }

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn.danger { background: var(--bad); border-color: var(--bad); color: #fff; }

.btn.soft {
  background: var(--accent-soft);
  border-color: transparent;
  color: var(--accent-text);
  box-shadow: none;
}
.btn.soft:hover { filter: brightness(0.97); }

.btn.ghost { background: transparent; border-color: transparent; box-shadow: none; color: var(--text-2); }
.btn.ghost:hover { background: var(--surface-2); }

.btn.sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn.lg { height: 46px; padding: 0 22px; font-size: 15px; }
.btn.full { width: 100%; }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  transition: background 0.15s, color 0.15s;
}
.icon-btn:hover { background: var(--surface-2); color: var(--text); }
.icon-btn.danger:hover { background: var(--bad-soft); color: var(--bad); }

.link {
  border: none;
  background: none;
  padding: 0;
  color: var(--accent-text);
  font-weight: 550;
}
.link:hover { text-decoration: underline; }

kbd {
  display: inline-block;
  font-size: 11px;
  line-height: 1;
  padding: 3px 6px;
  border-radius: 5px;
  border: 1px solid currentColor;
  opacity: 0.75;
}

/* ---- Form controls ---- */

input, select, textarea {
  font: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  max-width: 100%;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--focus);
}

select {
  height: 38px;
  padding-right: 32px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 16px;
  cursor: pointer;
}

textarea { width: 100%; resize: vertical; line-height: 1.5; }

::placeholder { color: var(--muted); opacity: 0.8; }

/* ---- Brand ---- */

.logo-mark {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  box-shadow: 0 4px 12px -2px rgb(99 102 241 / 0.45);
}
.logo-mark .icon { width: 22px; height: 22px; stroke-width: 2.4; }
.logo-mark.sm { width: 30px; height: 30px; border-radius: 8px; }
.logo-mark.sm .icon { width: 18px; height: 18px; }
.logo-mark.lg { width: 56px; height: 56px; border-radius: 16px; }
.logo-mark.lg .icon { width: 32px; height: 32px; }

.brand-name { font-weight: 700; font-size: 17px; letter-spacing: -0.02em; }

/* ---- Splash and login ---- */

.splash {
  min-height: 100vh;
  display: grid;
  place-items: center;
}
.splash .logo-mark { animation: pulse 1.2s ease-in-out infinite; }

@keyframes pulse {
  50% { transform: scale(0.92); opacity: 0.7; }
}

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
  background:
    radial-gradient(60rem 30rem at 10% -10%, rgb(99 102 241 / 0.16), transparent 60%),
    radial-gradient(50rem 30rem at 110% 110%, rgb(139 92 246 / 0.14), transparent 60%),
    var(--bg);
}

.login-card {
  width: min(440px, 100%);
  padding: 36px 32px 28px;
  border-radius: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.brand-row { display: flex; align-items: center; gap: 10px; margin-bottom: 28px; }

.login-card h1 { font-size: 28px; letter-spacing: -0.03em; margin-bottom: 10px; }
.login-card .lead { color: var(--muted); font-size: 15px; margin-bottom: 22px; }

.login-points {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 10px;
}
.login-points li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-2); }
.login-points .icon {
  width: 30px;
  height: 30px;
  padding: 6px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-text);
}

.google-button { min-height: 44px; display: flex; justify-content: center; }

.fine {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

/* ---- Top bar ---- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 1080px;
  margin: 0 auto;
  height: 60px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 10px; }

.tabs {
  display: flex;
  gap: 2px;
  padding: 3px;
  border-radius: 10px;
  background: var(--surface-2);
}

.tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 14px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  font-weight: 550;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}
.tab .icon { width: 16px; height: 16px; }
.tab:hover { color: var(--text); }
.tab.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }

.user { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.avatar {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
}

.user-email { font-size: 13px; color: var(--muted); }

/* ---- Page layout ---- */

.content {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 20px 64px;
}

.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}
.page-head h1 { font-size: 26px; letter-spacing: -0.03em; margin-bottom: 4px; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.status-line { font-size: 13px; color: var(--muted); margin: 14px 2px 10px; }
.status-line:empty { display: none; }

.alert {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
}
.alert.error { background: var(--bad-soft); color: var(--bad); }
.alert.info { background: var(--surface-2); color: var(--text-2); }
.alert .icon { margin-top: 1px; }

/* ---- Stats ---- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}

.stat {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.stat-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-text);
  flex: none;
}
.stat.warn .stat-icon { background: var(--warn-soft); color: var(--warn); }

.stat-label { font-size: 13px; color: var(--muted); font-weight: 500; }
.stat-value { font-size: 26px; font-weight: 700; letter-spacing: -0.03em; line-height: 1.2; }
.stat-note { font-size: 12px; color: var(--muted); }

/* ---- Filters ---- */

.filters {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) repeat(4, auto);
  gap: 10px;
  padding: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.filters > * { min-width: 0; } /* let grid cells shrink on small screens */
.filters select { width: 100%; }

.search { position: relative; display: block; }
.search .icon {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  width: 16px;
  height: 16px;
  pointer-events: none;
}
.search input { width: 100%; height: 38px; padding-left: 34px; }

/* ---- Badges, pills, tags ---- */

.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge.technical { background: var(--tech-soft); color: var(--tech); }
.badge.behavioral { background: var(--behav-soft); color: var(--behav); }

.conf {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 24px;
  padding: 0 10px 0 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--surface-2);
  color: var(--text-2);
}
.conf-dots { display: inline-flex; gap: 2px; }
.conf-dots span { width: 6px; height: 6px; border-radius: 50%; background: var(--border-strong); }
.conf-1 .on, .conf-2 .on { background: var(--bad); }
.conf-3 .on { background: var(--warn); }
.conf-4 .on, .conf-5 .on { background: var(--good); }
.conf-1, .conf-2 { background: var(--bad-soft); color: var(--bad); }
.conf-3 { background: var(--warn-soft); color: var(--warn); }
.conf-4, .conf-5 { background: var(--good-soft); color: var(--good); }

.ai-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 24px;
  padding: 0 10px 0 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 650;
  cursor: help;
}
.ai-pill .icon { width: 13px; height: 13px; }
.ai-pill.high { background: var(--good-soft); color: var(--good); }
.ai-pill.mid { background: var(--warn-soft); color: var(--warn); }
.ai-pill.low { background: var(--bad-soft); color: var(--bad); }

.tags { display: flex; flex-wrap: wrap; gap: 6px; }

.tag {
  font-size: 12px;
  font-weight: 500;
  padding: 2px 9px;
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--text-2);
  border: 1px solid var(--border);
}

/* ---- Question cards ---- */

.q-list { display: grid; gap: 12px; }

.q-card {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 0.15s, box-shadow 0.15s;
  min-width: 0;
  overflow-wrap: anywhere;
}
.q-card:hover { border-color: var(--border-strong); }

.q-top { display: flex; align-items: flex-start; gap: 12px; }
.q-badges { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; }
.q-actions { display: flex; gap: 2px; margin: -4px -6px 0 0; }

.q-title {
  font-size: 16.5px;
  font-weight: 650;
  margin: 12px 0 10px;
  white-space: pre-wrap;
}

.q-answer { margin-top: 12px; }
.q-answer summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--accent-text);
  font-size: 13px;
  font-weight: 600;
  list-style: none;
}
.q-answer summary::-webkit-details-marker { display: none; }
.q-answer summary::before {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.15s;
}
.q-answer[open] summary::before { transform: rotate(45deg); }
.q-answer .answer-box { margin-top: 10px; }

.answer-box {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 14.5px;
}
.answer, .notes { white-space: pre-wrap; }
.notes { margin-top: 10px; color: var(--text-2); font-size: 13.5px; }
.notes strong { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }

.star { display: grid; gap: 8px; margin: 12px 0 0; }
.star div { padding-left: 12px; border-left: 3px solid var(--behav); }
.star dt { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--behav); }
.star dd { margin: 2px 0 0; white-space: pre-wrap; }

.q-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--muted);
}
.q-foot span { display: inline-flex; align-items: center; gap: 5px; }
.q-foot .icon { width: 14px; height: 14px; }

/* ---- Empty states ---- */

.empty { text-align: center; padding: 48px 20px; }
.empty h3 { font-size: 17px; margin: 14px 0 6px; }
.empty p { color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.empty p:last-child { margin-bottom: 0; }
.empty-icon {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent-soft);
  color: var(--accent-text);
}
.empty-icon .icon { width: 24px; height: 24px; }

/* ---- Practice ---- */

.practice-setup {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.practice-setup select { min-width: 160px; }
.practice-setup .btn { margin-left: auto; }

.progress { margin-bottom: 16px; }

.progress-text {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin-bottom: 8px;
  font-size: 14px;
}

#p-counts { display: flex; gap: 6px; flex-wrap: wrap; }
.count {
  font-size: 12px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text-2);
}
.count.good { background: var(--good-soft); color: var(--good); }

.progress-track {
  height: 8px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  overflow: hidden;
}
#p-bar {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  transition: width 0.3s ease;
}

.practice-card { padding: 28px; }

.pc-head { display: flex; align-items: center; gap: 8px; }

.pc-question {
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin: 18px 0 12px;
  white-space: pre-wrap;
}

.practice-card .tags { margin-bottom: 18px; }

.try {
  margin-bottom: 18px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}
.try summary {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 550;
  color: var(--text-2);
  list-style: none;
}
.try summary::-webkit-details-marker { display: none; }
.try summary .icon { width: 16px; height: 16px; color: var(--accent-text); }
.try[open] summary { margin-bottom: 10px; }
.opt {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface-2);
  padding: 1px 7px;
  border-radius: 999px;
}
.try-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }

.reveal { width: 100%; }

.section-label {
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  margin: 4px 0 8px;
}

.pc-ai {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0 4px;
}

.score-chips { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.score-chip {
  font-size: 12px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text-2);
}
.score-chip.high b { color: var(--good); }
.score-chip.mid b { color: var(--warn); }
.score-chip.low b { color: var(--bad); }

.rate { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--border); }

.rate-buttons {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.rate-buttons button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
}
.rate-buttons b { font-size: 18px; }
.rate-buttons span { font-size: 12px; color: var(--muted); }
.rate-buttons button:active { transform: translateY(1px); }
.rate-buttons .r1:hover, .rate-buttons .r2:hover { border-color: var(--bad); background: var(--bad-soft); }
.rate-buttons .r3:hover { border-color: var(--warn); background: var(--warn-soft); }
.rate-buttons .r4:hover, .rate-buttons .r5:hover { border-color: var(--good); background: var(--good-soft); }

.kbd-hint { margin-top: 10px; font-size: 12px; color: var(--muted); text-align: center; }

.done { text-align: center; padding: 40px 20px; }
.done h2 { font-size: 22px; margin: 14px 0 6px; }
.done p { color: var(--muted); margin-bottom: 20px; }
.done-icon {
  display: inline-grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: var(--good-soft);
  color: var(--good);
}
.done-icon .icon { width: 28px; height: 28px; }

/* ---- AI feedback ---- */

.practice-card .feedback {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.fb-loading { display: flex; align-items: center; gap: 14px; padding: 18px 4px; }
.spinner {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 3px solid var(--accent-soft);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
  flex: none;
}
@keyframes spin { to { transform: rotate(360deg); } }

.fb-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
}
.fb-meta .icon { width: 15px; height: 15px; }

.fb-summary {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 20px;
  align-items: center;
  padding: 18px;
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--border);
  margin-bottom: 20px;
}

.fb-overall { text-align: center; }
.fb-overall-num { font-size: 40px; font-weight: 750; letter-spacing: -0.04em; line-height: 1; }
.fb-overall-num small { font-size: 16px; font-weight: 600; color: var(--muted); margin-left: 2px; }
.fb-overall-label { margin-top: 6px; font-size: 13px; font-weight: 650; }
.fb-overall.high .fb-overall-num, .fb-overall.high .fb-overall-label { color: var(--good); }
.fb-overall.mid .fb-overall-num, .fb-overall.mid .fb-overall-label { color: var(--warn); }
.fb-overall.low .fb-overall-num, .fb-overall.low .fb-overall-label { color: var(--bad); }

.fb-bars { display: grid; gap: 10px; }
.score-row { display: grid; grid-template-columns: 90px 1fr 40px; align-items: center; gap: 10px; font-size: 13.5px; }
.score-name { font-weight: 550; color: var(--text-2); }
.score-track { height: 8px; border-radius: 999px; background: var(--border); overflow: hidden; }
.score-track span { display: block; height: 100%; border-radius: 999px; }
.score-track .high { background: var(--good); }
.score-track .mid { background: var(--warn); }
.score-track .low { background: var(--bad); }
.score-num { font-weight: 700; text-align: right; }
.score-num small { color: var(--muted); font-weight: 500; }

.feedback section { margin-bottom: 20px; }
.feedback h4 {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  margin-bottom: 10px;
}
.feedback h4 .icon { width: 17px; height: 17px; color: var(--muted); }

.fb-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.fb-columns section:first-child h4 .icon { color: var(--good); }
.fb-columns section:last-child h4 .icon { color: var(--warn); }

.fb-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.fb-list li { display: flex; gap: 9px; font-size: 14px; color: var(--text-2); }
.fb-list .icon { width: 16px; height: 16px; margin-top: 2px; }
.fb-list.good .icon { color: var(--good); }
.fb-list.warn .icon { color: var(--warn); }
.fb-list.neutral .icon { color: var(--accent-text); }

.fb-suggested-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.fb-suggested-head h4 { margin: 0; }
.fb-suggested-text {
  margin: 0;
  padding: 14px 18px;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--accent-soft);
  white-space: pre-wrap;
  font-size: 14.5px;
}

.model-label { font: 12px var(--mono); color: var(--muted); }

/* ---- Import / export ---- */

.io-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }

.panel-head { display: flex; gap: 14px; margin-bottom: 18px; }
.panel-head h3 { font-size: 16px; margin-bottom: 2px; }

.tile-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-text);
  flex: none;
}

.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 28px 16px;
  margin-bottom: 12px;
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--muted);
  font-size: 14px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone .icon { width: 28px; height: 28px; }
.dropzone strong { color: var(--accent-text); }
.dropzone:hover, .dropzone.dragging { border-color: var(--accent); background: var(--accent-soft); }
.dropzone.has-file { border-style: solid; border-color: var(--accent); }
.dropzone.has-file strong { color: var(--text); }

#import-result { margin-top: 14px; }

.import-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.stat-mini {
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  text-align: center;
}
.stat-mini b { display: block; font-size: 20px; }
.stat-mini span { font-size: 12px; color: var(--muted); }
.stat-mini.good b { color: var(--good); }
.stat-mini.bad b { color: var(--bad); }

.import-errors { margin: 10px 0 0; padding-left: 18px; font-size: 13px; color: var(--bad); }

.help { margin-top: 16px; font-size: 13px; color: var(--text-2); }
.help summary { cursor: pointer; color: var(--accent-text); font-weight: 600; }
.help p { margin: 8px 0; }
.help code { background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }

pre {
  overflow-x: auto;
  margin: 0;
  padding: 10px 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 12px;
}

.export-options { display: grid; gap: 10px; }
.export-option {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}
.export-option:hover { border-color: var(--accent); background: var(--accent-soft); }
.export-option strong { display: block; font-size: 14px; }
.export-option .sub { font-size: 13px; }
.export-option > .icon { color: var(--muted); }
.ext {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--surface-2);
  font: 700 11px var(--mono);
  color: var(--accent-text);
}

/* ---- Modals ---- */

dialog.modal {
  width: min(620px, calc(100vw - 24px));
  max-height: calc(100vh - 40px);
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-lg);
}
dialog.modal.wide { width: min(780px, calc(100vw - 24px)); }
dialog.modal.small { width: min(420px, calc(100vw - 24px)); }
dialog.modal[open] { animation: pop 0.16s ease-out; }
dialog::backdrop { background: rgb(10 12 20 / 0.5); backdrop-filter: blur(3px); }

@keyframes pop {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}
.modal-head h2 { font-size: 19px; }
.modal-head .icon-btn { margin: -6px -8px 0 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-text);
  margin-bottom: 6px;
}
.eyebrow .icon { width: 14px; height: 14px; }

dialog.small h2 { font-size: 18px; margin-bottom: 8px; }
dialog.small .sub { white-space: pre-wrap; overflow-wrap: anywhere; }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 22px;
}

.field {
  display: block;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
}
.field > input, .field > select, .field > textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  font-weight: 400;
}
.hint { font-weight: 400; color: var(--muted); margin-left: 4px; }

#q-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.star-fields {
  margin: 0 0 14px;
  padding: 14px 14px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
}
.star-fields legend {
  padding: 0 6px;
  font-size: 13px;
  font-weight: 650;
  color: var(--behav);
}
.star-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }

/* ---- Toasts ---- */

.toasts {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: grid;
  gap: 8px;
  justify-items: center;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 999px;
  background: #111827;
  color: #f9fafb;
  font-size: 14px;
  font-weight: 550;
  box-shadow: var(--shadow-lg);
  animation: toast-in 0.2s ease-out;
  transition: opacity 0.3s, transform 0.3s;
}
.toast .icon { width: 17px; height: 17px; color: #34d399; }
.toast.error .icon { color: #f87171; }
.toast.leaving { opacity: 0; transform: translateY(6px); }

@media (prefers-color-scheme: dark) {
  .toast { background: #f3f4f6; color: #111827; }
  .toast .icon { color: #059669; }
  .toast.error .icon { color: #dc2626; }
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(10px); }
}

/* ---- Touch devices: no keyboard hints ---- */

@media (hover: none) {
  kbd, .kbd-hint { display: none; }
}

/* ---- Tablets ---- */

@media (max-width: 900px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .filters { grid-template-columns: 1fr 1fr; }
  .filters .search { grid-column: 1 / -1; }
  .user-email { display: none; }
}

/* ---- Phones ---- */

@media (max-width: 640px) {
  body { font-size: 14.5px; }
  .topbar-inner { height: auto; flex-wrap: wrap; gap: 10px; padding: 10px 16px; }
  .tabs { order: 3; width: 100%; }
  .tab { flex: 1; justify-content: center; padding: 0 6px; font-size: 13px; }
  .tab .icon { display: none; }
  .content { padding: 20px 16px 48px; }
  .page-head { align-items: stretch; flex-direction: column; }
  .page-head h1 { font-size: 22px; }
  .page-head .btn { width: 100%; }
  .stats { gap: 10px; }
  .stat { padding: 12px; gap: 10px; }
  .stat-icon { width: 32px; height: 32px; }
  .stat-value { font-size: 22px; }
  .q-card { padding: 16px; }
  .practice-card { padding: 20px 16px; }
  .pc-question { font-size: 19px; }
  .practice-setup select { flex: 1; min-width: 0; }
  .practice-setup .btn { width: 100%; margin-left: 0; }
  .rate-buttons { gap: 6px; }
  .rate-buttons span { font-size: 10.5px; }
  .fb-summary { grid-template-columns: 1fr; gap: 14px; }
  .fb-columns { grid-template-columns: 1fr; gap: 0; }
  .io-grid { grid-template-columns: 1fr; }
  #q-form .row, .star-grid { grid-template-columns: 1fr; }
  dialog.modal { padding: 18px; }
}