/* ============================================================
   ANALYTICS-PRO.CSS — range chips, activity, topics, badges,
   the SRS queue, and the attempt-review window.
   ============================================================ */

.an-range { display: flex; align-items: center; gap: 0.3rem; margin-bottom: 0.9rem; flex-wrap: wrap; }
.an-range-chip {
  padding: 0.2rem 0.6rem; font-size: 0.6875rem; font-weight: 700;
  border-radius: 999px; border: 1px solid var(--border-color);
  background: transparent; color: var(--text-tertiary); cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.an-range-chip:hover { color: var(--text-primary); border-color: var(--color-primary); }
.an-range-chip.active { background: var(--color-primary-subtle); border-color: var(--color-primary); color: var(--color-primary); }
.an-range-chip.an-export { margin-left: auto; display: inline-flex; align-items: center; gap: 0.25rem; }
.an-range-note { font-size: 0.6875rem; color: var(--text-tertiary); margin-left: 0.4rem; cursor: help; text-decoration: underline dotted; }

.ac-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 1100px) { .ac-grid2 { grid-template-columns: 1fr; } }
.ac-card-hint { font-size: 0.6875rem; font-weight: 500; color: var(--text-tertiary); margin-left: 0.4rem; }
.an-empty { font-size: 0.8125rem; color: var(--text-tertiary); padding: 0.5rem 0; }

/* Activity heatmap */
.an-hm { display: grid; grid-auto-flow: column; grid-template-rows: repeat(7, 11px); gap: 3px; overflow-x: auto; padding-bottom: 0.4rem; }
.an-hm-cell { width: 11px; height: 11px; border-radius: 2px; background: rgba(148, 163, 184, 0.10); }
.an-hm-cell[data-lvl="1"] { background: rgba(99, 102, 241, 0.32); }
.an-hm-cell[data-lvl="2"] { background: rgba(99, 102, 241, 0.55); }
.an-hm-cell[data-lvl="3"] { background: rgba(99, 102, 241, 0.78); }
.an-hm-cell[data-lvl="4"] { background: var(--color-primary); }
.an-hm-legend { display: flex; align-items: center; gap: 1rem; margin-top: 0.5rem; font-size: 0.6875rem; color: var(--text-tertiary); flex-wrap: wrap; }
.an-hm-legend strong { color: var(--text-primary); font-size: 0.8125rem; }
.an-hm-scale { display: inline-flex; align-items: center; gap: 3px; margin-left: auto; }
.an-hm-scale i { width: 10px; height: 10px; border-radius: 2px; background: rgba(148, 163, 184, 0.10); display: inline-block; }
.an-hm-scale i[data-lvl="1"] { background: rgba(99, 102, 241, 0.32); }
.an-hm-scale i[data-lvl="2"] { background: rgba(99, 102, 241, 0.55); }
.an-hm-scale i[data-lvl="3"] { background: rgba(99, 102, 241, 0.78); }
.an-hm-scale i[data-lvl="4"] { background: var(--color-primary); }

/* Topic breakdown */
.an-tags { display: flex; flex-direction: column; gap: 0.45rem; }
.an-tag-row { display: grid; grid-template-columns: 7rem 1fr 2.6rem; align-items: center; gap: 0.5rem; }
.an-tag-name { font-size: 0.8125rem; color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.an-tag-track { height: 6px; border-radius: 3px; background: rgba(148, 163, 184, 0.12); overflow: hidden; }
.an-tag-fill { display: block; height: 100%; border-radius: 3px; }
.an-tag-val { font-size: 0.75rem; font-weight: 700; color: var(--text-primary); text-align: right; }

/* Weakest programs */
.an-weak { display: flex; flex-direction: column; gap: 0.3rem; }
.an-weak-row {
  display: grid; grid-template-columns: 1fr 2rem 5rem 2.6rem 16px; align-items: center; gap: 0.5rem;
  padding: 0.4rem 0.5rem; border-radius: var(--radius-sm);
  background: transparent; border: 1px solid transparent; cursor: pointer; text-align: left;
  color: var(--text-secondary); transition: background 0.15s, border-color 0.15s;
}
.an-weak-row:hover { background: var(--bg-surface-hover); border-color: var(--color-primary); color: var(--text-primary); }
.an-weak-title { font-size: 0.8125rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.an-weak-attempts { font-size: 0.6875rem; color: var(--text-tertiary); text-align: right; }
.an-weak-track { height: 6px; border-radius: 3px; background: rgba(148, 163, 184, 0.12); overflow: hidden; }
.an-weak-track > span { display: block; height: 100%; background: var(--color-warning); border-radius: 3px; }
.an-weak-best { font-size: 0.75rem; font-weight: 700; text-align: right; }

/* Badges */
.an-badges { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.an-badge {
  position: relative; display: flex; flex-direction: column; gap: 0.15rem;
  min-width: 8.5rem; padding: 0.5rem 0.65rem; border-radius: var(--radius-md);
  border: 1px solid var(--border-color); background: var(--bg-surface); opacity: 0.55;
}
.an-badge.earned { opacity: 1; border-color: rgba(99, 102, 241, 0.45); background: var(--color-primary-subtle); }
.an-badge > i, .an-badge > svg { width: 15px; height: 15px; color: var(--text-tertiary); }
.an-badge.earned > i, .an-badge.earned > svg { color: var(--color-primary); }
.an-badge-name { font-size: 0.75rem; font-weight: 700; color: var(--text-primary); }
.an-badge-meta { font-size: 0.625rem; color: var(--text-tertiary); }
.an-badge-bar { display: block; height: 3px; border-radius: 2px; background: rgba(148, 163, 184, 0.15); margin-top: 0.2rem; }
.an-badge-bar > span { display: block; height: 100%; background: var(--color-primary); border-radius: 2px; }

/* SRS queue */
.an-srs-head { font-size: 0.6875rem; color: var(--text-tertiary); margin-bottom: 0.5rem; }
.an-srs-head strong { color: var(--color-warning); }
.an-srs-card { margin-bottom: 0.75rem; }
.an-srs-top { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; }
.an-srs-top h3 { font-weight: 700; font-size: 1rem; margin: 0; }
.an-srs-box { font-size: 0.5rem; letter-spacing: 1px; color: var(--color-primary); }
.an-srs-meta { font-size: 0.75rem; color: var(--text-secondary); margin: 0.35rem 0 0.6rem; }
.an-srs-actions { display: flex; gap: 0.4rem; }
.an-srs-actions .btn { flex: 1; }

.an-page-info { text-align: center; font-size: 0.6875rem; color: var(--text-tertiary); margin-top: 1rem; }

/* ── Review window ───────────────────────────────────────────
   Your attempt beside the target, differing lines called out, arrows to cycle
   through every wrong attempt. */
.anr-overlay {
  position: fixed; inset: 0; z-index: 9998;
  background: rgba(2, 6, 16, 0.72); backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px);
  display: flex; align-items: center; justify-content: center; padding: 2rem;
}
.anr-box {
  width: min(1240px, 100%); max-height: 90vh; display: flex; flex-direction: column;
  background: var(--bg-elevated); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); overflow: hidden;
}
.anr-head { display: flex; align-items: center; gap: 0.5rem; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--border-color); }
.anr-id { flex: 1; min-width: 0; }
.anr-title { display: block; font-weight: 800; font-size: 0.95rem; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.anr-sub { display: block; font-size: 0.6875rem; color: var(--text-tertiary); }
.anr-score { font-weight: 800; font-size: 0.9rem; padding: 0.15rem 0.55rem; border-radius: 999px; }
.anr-score.perfect { background: rgba(34, 197, 94, 0.16); color: var(--color-success); }
.anr-score.mid { background: rgba(245, 158, 11, 0.16); color: var(--color-warning); }
.anr-score.low { background: rgba(239, 68, 68, 0.16); color: var(--color-danger); }
.anr-nav { display: flex; align-items: center; gap: 0.2rem; }
.anr-count { font-size: 0.6875rem; color: var(--text-tertiary); min-width: 3.2rem; text-align: center; }
.anr-btn {
  display: inline-flex; align-items: center; gap: 0.25rem; padding: 0.3rem 0.5rem;
  font-size: 0.6875rem; font-weight: 600; color: var(--text-secondary);
  background: transparent; border: 1px solid var(--border-color); border-radius: var(--radius-sm); cursor: pointer;
}
.anr-btn:hover { color: var(--text-primary); border-color: var(--color-primary); }
.anr-btn i, .anr-btn svg { width: 14px; height: 14px; }
.anr-btn.on { color: var(--color-primary); border-color: var(--color-primary); background: var(--color-primary-subtle); }
.anr-files { display: flex; gap: 0.3rem; padding: 0.5rem 0.9rem 0; }
.anr-file { padding: 0.2rem 0.55rem; font-size: 0.6875rem; font-family: var(--font-mono); border-radius: var(--radius-sm) var(--radius-sm) 0 0; border: 1px solid var(--border-color); border-bottom: none; background: transparent; color: var(--text-tertiary); cursor: pointer; }
.anr-file.active { color: var(--color-primary); background: var(--bg-surface); }
.anr-legend { display: flex; align-items: center; gap: 0.4rem; padding: 0.5rem 0.9rem; font-size: 0.6875rem; color: var(--text-tertiary); border-bottom: 1px solid var(--border-color); }
.anr-k { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }
.anr-k.extra { background: rgba(239, 68, 68, 0.5); }
.anr-k.missing { background: rgba(34, 197, 94, 0.5); }
.anr-k.partial { background: rgba(245, 158, 11, 0.5); }
.anr-diffcount { margin-left: auto; font-weight: 700; color: var(--text-secondary); }
.anr-cols { display: grid; grid-template-columns: 2.6rem 1fr 2.6rem 1fr; background: var(--bg-surface); border-bottom: 1px solid var(--border-color); }
.anr-colhead { grid-column: 2; padding: 0.35rem 0.6rem; font-size: 0.625rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-tertiary); }
.anr-colhead-target { grid-column: 4; }
.anr-body { flex: 1; overflow: auto; background: var(--bg-surface); }
.anr-row { display: grid; grid-template-columns: 2.6rem 1fr 2.6rem 1fr; align-items: stretch; }
.anr-ln { font-family: var(--font-mono); font-size: 0.625rem; color: var(--text-tertiary); text-align: right; padding: 0.1rem 0.4rem; user-select: none; opacity: 0.6; }
.anr-code { margin: 0; padding: 0.1rem 0.6rem; font-family: var(--font-mono); font-size: 0.75rem; line-height: 1.55; white-space: pre-wrap; word-break: break-word; color: var(--text-secondary); }
.anr-row.extra .anr-yours { background: rgba(239, 68, 68, 0.14); color: var(--text-primary); }
.anr-row.missing .anr-target { background: rgba(34, 197, 94, 0.14); color: var(--text-primary); }
.anr-row.partial .anr-yours { background: rgba(245, 158, 11, 0.13); }
.anr-row.partial .anr-target { background: rgba(245, 158, 11, 0.08); }
.anr-row:not(.ok):hover { outline: 1px solid var(--color-primary); outline-offset: -1px; }
.anr-foot { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; padding: 0.6rem 0.9rem; border-top: 1px solid var(--border-color); }
.anr-hint { font-size: 0.6875rem; color: var(--text-tertiary); }

/* ── What keeps going wrong ────────────────────────────────────
   Ranked by the number of ATTEMPTS a mistake cost rather than by raw
   occurrences: ten recompiles chasing one typo is one bad afternoon, ten
   separate attempts is a habit. The bar behind each row is that ranking made
   visible, so the top one reads as the thing to fix next. */
.mk-list { display: flex; flex-direction: column; gap: 0.5rem; }
.mk-row {
  position: relative;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  overflow: hidden;
}
/* Behind the text, not around it — a filled row would fight the card. */
.mk-bar {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--mk-w, 0%);
  background: linear-gradient(90deg,
    color-mix(in srgb, var(--color-danger, #ef4444) 16%, transparent),
    transparent);
  pointer-events: none;
}
.mk-main { position: relative; padding: 0.6rem 0.75rem; }
.mk-head { display: flex; align-items: baseline; gap: 0.6rem; }
.mk-label {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--text-primary);
  flex: 1;
  min-width: 0;
}
.mk-count {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--color-danger, #ef4444);
  font-variant-numeric: tabular-nums;
}
.mk-why {
  margin-top: 0.2rem;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--text-secondary);
}
.mk-fix {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  margin-top: 0.4rem;
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-success, #22c55e) 10%, transparent);
  font-size: 0.76rem;
  line-height: 1.4;
  color: var(--text-primary);
}
.mk-fix svg { width: 13px; height: 13px; flex-shrink: 0; margin-top: 2px; color: var(--color-success, #22c55e); }
.mk-foot {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.4rem;
  font-size: 0.66rem;
  color: var(--text-tertiary);
}
.mk-concept {
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--bg-surface-hover);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.mk-last { margin-left: auto; font-variant-numeric: tabular-nums; }
.mk-empty {
  padding: 1rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

/* ── Concept mastery ───────────────────────────────────────────
   A meter per idea, weakest first. The bar is the reading and the number is
   the confirmation, so the list can be scanned down the left edge without
   reading a single figure — which is the point of ordering it by strength. */
.cn-lead {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.7rem;
  padding: 0.55rem 0.7rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface-hover);
  font-size: 0.8rem;
  color: var(--text-secondary);
}
.cn-lead strong { color: var(--text-primary); }
.cn-drill {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-primary) 15%, transparent);
  color: var(--color-primary);
  font: inherit;
  font-size: 0.76rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}
.cn-drill:hover { background: color-mix(in srgb, var(--color-primary) 26%, transparent); }
.cn-drill svg { width: 13px; height: 13px; }

.cn-list { display: flex; flex-direction: column; gap: 0.3rem; }
.cn-row {
  display: grid;
  grid-template-columns: 4px 1fr auto auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.5rem;
  border-radius: var(--radius-sm);
}
.cn-row:hover { background: var(--bg-surface-hover); }

/* The band is carried by colour on a rail, not by a badge — fifteen badges in
   a column is a wall of chips, and the rail reads at a glance. */
.cn-meter {
  position: relative;
  align-self: stretch;
  min-height: 26px;
  border-radius: 999px;
  background: var(--border-color);
  overflow: hidden;
}
.cn-fill {
  position: absolute;
  inset: auto 0 0 0;
  height: var(--cn-w, 0%);
  background: var(--cn-tone, var(--text-tertiary));
  transition: height 0.4s var(--ease-standard, ease);
}
.cn-row.is-weak    { --cn-tone: var(--color-danger, #ef4444); }
.cn-row.is-shaky   { --cn-tone: var(--color-warning, #f59e0b); }
.cn-row.is-solid   { --cn-tone: var(--color-primary, #6366f1); }
.cn-row.is-strong  { --cn-tone: var(--color-success, #22c55e); }
.cn-row.is-untried { --cn-tone: transparent; }

.cn-name { min-width: 0; }
.cn-label {
  display: block;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text-primary);
}
.cn-sub {
  display: block;
  font-size: 0.68rem;
  color: var(--text-tertiary);
  margin-top: 1px;
}
.cn-pct {
  font-size: 0.86rem;
  font-weight: 800;
  color: var(--cn-tone, var(--text-tertiary));
  font-variant-numeric: tabular-nums;
}
.cn-row.is-untried .cn-pct { color: var(--text-tertiary); }
.cn-go {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
}
.cn-go:hover { color: var(--color-primary); border-color: var(--color-primary); }
.cn-go svg { width: 12px; height: 12px; }

/* ── Storage card ──────────────────────────────────────────────
   A meter rather than a number on its own: "412 KB" means nothing without the
   ceiling it is heading for, and the whole point of the card is to say how much
   room is left before a sync starts refusing writes. */
.hs-wrap { display: flex; flex-direction: column; gap: 10px; }

.hs-meter {
  height: 8px; border-radius: 999px; overflow: hidden;
  background: var(--bg-tertiary, rgba(127, 127, 127, 0.18));
}
.hs-meter > span {
  display: block; height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, var(--color-success, #2e9e6b), var(--color-info, #3b82c4));
  transition: width .4s ease;
}
.hs-meter.is-warm > span {
  background: linear-gradient(90deg, var(--color-info, #3b82c4), var(--color-warning, #d08b2c));
}
.hs-meter.is-hot > span {
  background: linear-gradient(90deg, var(--color-warning, #d08b2c), var(--color-danger, #d0503c));
}

.hs-line { margin: 0; color: var(--text-primary); font-size: .92rem; line-height: 1.5; }
.hs-line b { font-variant-numeric: tabular-nums; }
.hs-sub, .hs-note { margin: 0; color: var(--text-secondary); font-size: .82rem; line-height: 1.5; }
.hs-note { color: var(--text-tertiary); font-size: .78rem; }

.hs-acts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 2px; }

.hs-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 10px 7px 12px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--border-color, rgba(127, 127, 127, .3));
  background: var(--bg-secondary, transparent); color: var(--text-primary);
  font: inherit; font-size: .82rem; line-height: 1;
  transition: border-color .15s ease, background .15s ease;
}
.hs-btn:hover:not(:disabled) {
  border-color: var(--color-danger, #d0503c);
  background: var(--bg-tertiary, rgba(127, 127, 127, .1));
}
.hs-btn:focus-visible { outline: 2px solid var(--color-info, #3b82c4); outline-offset: 2px; }

/* Nothing matches, so the button says so instead of pretending to be live. */
.hs-btn:disabled { opacity: .45; cursor: default; }

.hs-n {
  min-width: 20px; padding: 2px 6px; border-radius: 999px;
  background: var(--bg-tertiary, rgba(127, 127, 127, .18));
  font-variant-numeric: tabular-nums; font-size: .76rem; text-align: center;
}