/* views.css: Quizzes (.qz-) and Calendar (.cal-). Uses tokens from app.css :root with fallbacks. */

.qz-root, .cal-root {
  --v-bg: var(--bg, #f2f2f7);
  --v-surface: var(--surface, #ffffff);
  --v-text: var(--text, #1c1c1e);
  --v-text2: var(--text-2, #6c6c70);
  --v-accent: var(--accent, #0a84ff);
  --v-sep: var(--separator, rgba(60, 60, 67, 0.18));
  --v-radius: var(--radius, 14px);
  --v-good: var(--good, #30a46c);
  --v-warn: var(--warn, #e8890c);
  --v-bad: var(--bad, #e5484d);
  color: var(--v-text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  max-width: 960px; margin: 0 auto; padding: 8px 0 24px;
  -webkit-text-size-adjust: 100%;
}
.qz-root *, .cal-root * { box-sizing: border-box; }

/* ---------- shared controls ---------- */
.qz-btn, .cal-btn, .qz-pill, .qz-icon-btn, .cal-icon-btn, .cal-seg-btn, .qz-seg-btn {
  font: inherit; color: var(--v-text); background: var(--v-surface);
  border: 1px solid var(--v-sep); border-radius: 12px;
  min-height: 44px; min-width: 44px; padding: 0 16px; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform 120ms ease-out, background-color 160ms ease, opacity 160ms ease;
}
.qz-btn:active, .cal-btn:active, .qz-pill:active, .qz-icon-btn:active, .cal-icon-btn:active, .cal-seg-btn:active, .qz-seg-btn:active { transform: scale(0.97); }
.qz-btn:disabled, .cal-btn:disabled { opacity: 0.4; cursor: default; }
.qz-primary, .cal-primary { background: var(--v-accent); border-color: transparent; color: #fff; font-weight: 600; }
.qz-danger, .cal-danger { color: var(--v-bad); }
.qz-icon-btn, .cal-icon-btn { padding: 0 10px; font-size: 1rem; }
.qz-btn:focus-visible, .cal-btn:focus-visible, .qz-pill:focus-visible, .qz-icon-btn:focus-visible, .cal-icon-btn:focus-visible,
.cal-seg-btn:focus-visible, .qz-seg-btn:focus-visible, .qz-input:focus-visible, .cal-input:focus-visible, .cal-cell:focus-visible, .cal-ev:focus-visible, .qz-chip:focus-visible {
  outline: 2px solid var(--v-accent); outline-offset: 2px;
}
.qz-input, .cal-input {
  font: inherit; font-size: 16px; /* 16px stops iOS zoom on focus */
  width: 100%; min-height: 44px; padding: 8px 12px; color: var(--v-text);
  background: var(--v-bg); border: 1px solid var(--v-sep); border-radius: 10px;
}
textarea.cal-input { resize: vertical; }
.qz-field, .cal-field { display: flex; flex-direction: column; gap: 4px; font-size: 0.8125rem; color: var(--v-text2); min-width: 0; }
.qz-muted { color: var(--v-text2); font-size: 0.8125rem; }
.qz-empty, .cal-empty { color: var(--v-text2); font-size: 0.9375rem; margin: 8px 0; }
.qz-h2, .cal-h2 { font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.01em; margin: 0 0 8px; }
.qz-h3 { font-size: 0.9375rem; font-weight: 600; margin: 0; }
.qz-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; flex: none; }
.qz-header, .cal-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.qz-title, .cal-title { font-size: 1.75rem; font-weight: 700; letter-spacing: -0.02em; margin: 0; }

/* ---------- quizzes ---------- */
.qz-filter { display: flex; gap: 8px; overflow-x: auto; padding: 2px 0 12px; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
.qz-filter::-webkit-scrollbar { display: none; }
.qz-pill { display: inline-flex; align-items: center; gap: 8px; border-radius: 999px; white-space: nowrap; }
.qz-pill[aria-pressed="true"] { background: var(--v-accent); border-color: transparent; color: #fff; }
.qz-card, .qz-form { background: var(--v-surface); border-radius: var(--v-radius); padding: 16px; margin-bottom: 14px; border: 1px solid var(--v-sep); }
.qz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.qz-q-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin: 8px 0; }
.qz-qlist, .qz-clist, .qz-qzlist, .qz-trends { list-style: none; margin: 0; padding: 0; }
.qz-q { display: grid; grid-template-columns: 34px auto 1fr 44px; gap: 8px; align-items: center; padding: 10px 0; border-top: 1px solid var(--v-sep); }
.qz-q-n { font-weight: 600; font-size: 0.875rem; color: var(--v-text2); }
.qz-seg { display: inline-flex; border: 1px solid var(--v-sep); border-radius: 12px; overflow: hidden; }
.qz-seg-btn { position: relative; display: inline-flex; border: 0; border-radius: 0; min-width: 44px; padding: 0; font-size: 1.125rem; font-weight: 600; background: var(--v-bg); }
.qz-seg-btn + .qz-seg-btn { border-left: 1px solid var(--v-sep); }
/* Real radio inputs (same name per question) so arrow keys work and a group is one tab stop. */
.qz-radio { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.qz-glyph { display: flex; align-items: center; justify-content: center; width: 100%; min-width: 44px; min-height: 44px; pointer-events: none; }
.qz-radio:focus-visible + .qz-glyph { outline: 2px solid var(--v-accent); outline-offset: -3px; }
.qz-radio:checked + .qz-glyph { color: #fff; }
.qz-r-correct .qz-radio:checked + .qz-glyph { background: var(--v-good); }
.qz-r-guessed .qz-radio:checked + .qz-glyph { background: var(--v-warn); }
.qz-r-wrong .qz-radio:checked + .qz-glyph { background: var(--v-bad); }
.qz-q-tags { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; min-width: 0; }
.qz-concept-input { flex: 1 1 140px; min-width: 120px; }
.qz-chip { font: inherit; font-size: 0.8125rem; min-height: 32px; padding: 0 10px; border-radius: 999px; border: 0; cursor: pointer;
  background: color-mix(in srgb, var(--v-accent) 14%, transparent); color: var(--v-accent); }
.qz-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
.qz-actions { justify-content: flex-end; margin-bottom: 0; }
.qz-concept, .qz-quiz, .qz-trend { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-top: 1px solid var(--v-sep); flex-wrap: wrap; }
.qz-concept:first-child, .qz-quiz:first-child, .qz-trend:first-child { border-top: 0; }
.qz-concept-main { display: flex; flex-direction: column; min-width: 0; flex: 1 1 160px; }
.qz-concept-name { font-weight: 600; overflow-wrap: anywhere; }
.qz-badge { font-size: 0.75rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.qz-s-weak { background: color-mix(in srgb, var(--v-bad) 16%, transparent); color: var(--v-bad); }
.qz-s-developing { background: color-mix(in srgb, var(--v-warn) 18%, transparent); color: var(--v-warn); }
.qz-s-strong { background: color-mix(in srgb, var(--v-good) 16%, transparent); color: var(--v-good); }
.qz-s-untested { background: var(--v-bg); color: var(--v-text2); }
.qz-meter { flex: 0 0 64px; height: 6px; border-radius: 3px; background: var(--v-bg); overflow: hidden; }
.qz-meter-fill { display: block; height: 100%; border-radius: 3px; transition: width 300ms cubic-bezier(0.2, 0.8, 0.2, 1); }
.qz-meter-fill.qz-s-weak { background: var(--v-bad); }
.qz-meter-fill.qz-s-developing { background: var(--v-warn); }
.qz-meter-fill.qz-s-strong { background: var(--v-good); }
.qz-pct { font-weight: 700; font-variant-numeric: tabular-nums; min-width: 3.2ch; text-align: right; }
.qz-spark { display: inline-flex; flex: none; }

@media (max-width: 560px) {
  .qz-grid { grid-template-columns: 1fr; }
  .qz-q { grid-template-columns: auto 1fr 44px; }
  .qz-q-tags { grid-column: 1 / -1; grid-row: 2; }
  .qz-q-n { grid-column: 1; }
  .qz-seg { grid-column: 2; justify-self: start; }
  .qz-q > .qz-icon-btn { grid-column: 3; grid-row: 1; }
}

/* ---------- calendar ---------- */
.cal-tools { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.cal-file { display: none; }
.cal-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.cal-nav { display: flex; gap: 6px; }
.cal-period { flex: 1 1 auto; font-size: 1.125rem; font-weight: 600; margin: 0; letter-spacing: -0.01em; }
.cal-seg { display: inline-flex; border: 1px solid var(--v-sep); border-radius: 12px; overflow: hidden; background: var(--v-surface); }
.cal-seg-btn { border: 0; border-radius: 0; background: transparent; }
.cal-seg-btn + .cal-seg-btn { border-left: 1px solid var(--v-sep); }
.cal-seg-btn[aria-pressed="true"] { background: var(--v-accent); color: #fff; font-weight: 600; }
.cal-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 0.75rem; color: var(--v-text2); margin-bottom: 10px; }
.cal-leg { display: inline-flex; align-items: center; gap: 6px; }

/* event kind colours (a dot or bar uses --cal-c when a subject colour is set) */
.cal-k-due { --cal-k: var(--v-bad); }
.cal-k-timeline { --cal-k: var(--v-warn); }
.cal-k-quiz { --cal-k: #af52de; }
.cal-k-study { --cal-k: var(--v-good); }
.cal-k-class { --cal-k: var(--v-text2); }
.cal-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cal-k); display: inline-block; flex: none; }

.cal-month { background: var(--v-surface); border: 1px solid var(--v-sep); border-radius: var(--v-radius); overflow: hidden; }
.cal-row { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); }
.cal-dow [role="columnheader"] { text-align: center; font-size: 0.6875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--v-text2); padding: 8px 0 4px; }
.cal-cell {
  font: inherit; color: inherit; background: transparent; border: 0; border-top: 1px solid var(--v-sep); border-left: 1px solid var(--v-sep);
  min-height: 56px; padding: 6px 2px 4px; display: flex; flex-direction: column; align-items: center; gap: 4px; cursor: pointer; text-align: center; min-width: 0;
}
.cal-cell:first-child { border-left: 0; }
.cal-out { color: var(--v-text2); opacity: 0.55; }
.cal-num { width: 28px; height: 28px; line-height: 28px; border-radius: 50%; font-size: 0.9375rem; font-variant-numeric: tabular-nums; }
.cal-today .cal-num { background: var(--v-accent); color: #fff; font-weight: 700; }
.cal-sel { background: color-mix(in srgb, var(--v-accent) 10%, transparent); }
.cal-dots { display: flex; gap: 3px; min-height: 7px; }
.cal-cell-list { display: none; }
.cal-day { padding: 14px 16px 16px; border-top: 1px solid var(--v-sep); }
.cal-day-head, .cal-wday-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.cal-list { display: flex; flex-direction: column; gap: 6px; }

.cal-ev {
  font: inherit; color: var(--v-text); text-align: left; display: flex; gap: 10px; align-items: stretch; width: 100%;
  background: color-mix(in srgb, var(--cal-c, var(--v-accent)) 10%, var(--v-surface)); border: 0; border-radius: 10px;
  padding: 8px 10px; min-height: 44px; cursor: pointer;
}
div.cal-ev { cursor: default; }
.cal-ev-bar { width: 4px; border-radius: 2px; background: var(--cal-c, var(--v-accent)); flex: none; }
.cal-ev-text { display: flex; flex-direction: column; min-width: 0; overflow-wrap: anywhere; font-size: 0.9375rem; }
.cal-ev-time { font-size: 0.75rem; color: var(--v-text2); font-variant-numeric: tabular-nums; }
.cal-ev-sub { font-size: 0.75rem; color: var(--v-text2); }
.cal-k-timeline.cal-ev { background: transparent; border: 1px dashed var(--v-sep); }
.cal-k-due .cal-ev-text { font-weight: 600; }

.cal-week { display: grid; gap: 10px; }
.cal-wday, .cal-agenda-day { background: var(--v-surface); border: 1px solid var(--v-sep); border-radius: var(--v-radius); padding: 12px; }
.cal-wday.cal-today, .cal-agenda-day.cal-today { border-color: var(--v-accent); }
.cal-agenda { display: grid; gap: 10px; }

/* study block sheet */
.cal-overlay { position: fixed; inset: 0; z-index: 50; background: rgba(0, 0, 0, 0.4); display: flex; align-items: flex-end; justify-content: center;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); animation: cal-fade 180ms ease-out; }
.cal-sheet { background: var(--v-surface); width: 100%; max-width: 480px; max-height: 92vh; overflow-y: auto; border-radius: 20px 20px 0 0;
  padding: 18px 16px calc(18px + env(safe-area-inset-bottom)); display: grid; gap: 12px; animation: cal-rise 280ms cubic-bezier(0.2, 0.9, 0.25, 1); }
.cal-two { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.cal-actions { display: flex; gap: 8px; align-items: center; }
.cal-spacer { flex: 1; }
@keyframes cal-fade { from { opacity: 0; } }
@keyframes cal-rise { from { transform: translateY(40px); opacity: 0; } }

@media (min-width: 768px) {
  .cal-cell { min-height: 104px; align-items: stretch; padding: 6px 6px 4px; text-align: left; }
  .cal-num { align-self: flex-start; }
  .cal-dots { display: none; }
  .cal-cell-list { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
  .cal-mini { font-size: 0.6875rem; line-height: 1.3; padding: 1px 5px; border-radius: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    background: color-mix(in srgb, var(--cal-c, var(--v-accent)) 16%, transparent); border-left: 3px solid var(--cal-c, var(--v-accent)); }
  .cal-more { font-size: 0.6875rem; color: var(--v-text2); }
  .cal-week { grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 8px; }
  .cal-wday { padding: 10px 8px; }
  .cal-overlay { align-items: center; }
  .cal-sheet { border-radius: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .qz-btn, .cal-btn, .qz-pill, .qz-icon-btn, .cal-icon-btn, .cal-seg-btn, .qz-seg-btn, .qz-meter-fill { transition: none; }
  .cal-overlay, .cal-sheet { animation: none; }
  .qz-btn:active, .cal-btn:active, .qz-pill:active, .qz-icon-btn:active, .cal-icon-btn:active, .cal-seg-btn:active, .qz-seg-btn:active { transform: none; }
}

/* Quizzes: sub-heading for the Developing list, inert content behind the calendar sheet */
.qz-h3-dev { margin-top: 0; }
.cal-root [inert] { pointer-events: none; }
.cal-sheet:focus { outline: none; }

/* ---------- round 2 additions ---------- */
.qz-hint { margin: 4px 0 8px; font-size: 0.8125rem; color: var(--v-text2); }
.cal-ev-wrap { display: flex; align-items: stretch; gap: 6px; }
.cal-ev-wrap > .cal-ev { flex: 1 1 auto; min-width: 0; }
.cal-ev-wrap > .cal-icon-btn { flex: none; font-size: 0.875rem; }
.cal-sources { margin: 16px 0 0; padding: 12px 14px; border: 1px solid var(--v-sep); border-radius: 12px; background: var(--v-surface); }
.cal-sources summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; font-weight: 600; }
.cal-source { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 6px 0; border-top: 1px solid var(--v-sep); overflow-wrap: anywhere; }
.cal-sources ul { list-style: none; margin: 0; padding: 0; }