/* ============================================================
   Atomify · v2 · istoric (page)
   ------------------------------------------------------------
   Gamified · 3rd page in the gamified track. Personal activity
   journal: stat overview + scope tabs + per-quiz best scores +
   chronological timeline grouped by day.
   ============================================================ */

/* ─── 1 · Stats overview ─────────────────────────────── */
.hist-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  overflow: hidden;
  background: var(--paper-2);
}
.hist-stat {
  position: relative;
  padding: 1.2rem 1.3rem 1.25rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.hist-stat:last-child { border-right: 0; }
@media (min-width: 720px) {
  .hist-stat { border-bottom: 0; }
}
.hist-stat-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.hist-stat-value {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  letter-spacing: -0.022em;
  line-height: 1;
  color: var(--ink);
}
.hist-stat-value .num {
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
}
.hist-stat-value--accent { color: var(--green-deep); }
[data-theme="dark"] .hist-stat-value--accent,
body.dark-mode .hist-stat-value--accent { color: var(--green); }
.hist-stat-value--gold { color: var(--gold); }
[data-theme="dark"] .hist-stat-value--gold,
body.dark-mode .hist-stat-value--gold { color: var(--gold-bright); }
.hist-stat-aux {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}

/* ─── 2 · Tabs (scope) ───────────────────────────────── */
.hist-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  padding: 0.4rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-2);
  width: max-content;
  max-width: 100%;
}
.hist-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 1rem;
  border: 0;
  background: transparent;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background-color 150ms, color 150ms;
}
.hist-tab svg { width: 14px; height: 14px; }
.hist-tab:hover { background: var(--paper); color: var(--ink); }
.hist-tab.is-active {
  background: var(--ink);
  color: var(--paper);
}
[data-theme="dark"] .hist-tab.is-active,
body.dark-mode .hist-tab.is-active {
  background: var(--green);
  color: #0B1220;
}

/* ─── 3 · Best scores (per-quiz) ─────────────────────── */
.hist-best-head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  margin: 1.75rem 0 0.85rem;
}
.hist-best-head h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.1rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0;
}
.hist-best-head-rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}
.hist-best-head-count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  text-transform: uppercase;
}

.hist-best {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  overflow: hidden;
  background: var(--paper-2);
}
.hist-best-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.1rem 1.25rem 1.15rem;
  background: var(--paper-2);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.hist-best-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.hist-best-card-name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1.2;
  min-width: 0;
  word-break: break-word;
  flex: 1;
}
.hist-best-card-medal {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  color: var(--ink-muted);
}
.hist-best-card-medal--gold {
  background: var(--gold);
  color: #FFFFFF;
  border-color: var(--gold);
}
.hist-best-card-medal--silver {
  background: var(--ink-3);
  color: var(--paper);
  border-color: var(--ink-3);
}
.hist-best-card-medal--bronze {
  background: var(--amber);
  color: #FFFFFF;
  border-color: var(--amber);
}

.hist-best-score-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.2rem;
}
.hist-best-score {
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
  font-size: 0.92rem;
  color: var(--ink-2);
}
.hist-best-score-correct { color: var(--ink); font-weight: 500; }
.hist-best-score-of { color: var(--ink-muted); margin: 0 0.15em; }
.hist-best-pct {
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--green-deep);
  line-height: 1;
}
.hist-best-pct--good { color: var(--green); }
.hist-best-pct--low  { color: var(--amber); }
[data-theme="dark"] .hist-best-pct,
body.dark-mode .hist-best-pct { color: var(--green); }

.hist-best-bar {
  height: 4px;
  background: var(--paper-3);
  border-radius: 2px;
  overflow: hidden;
}
.hist-best-bar::after {
  content: '';
  display: block;
  height: 100%;
  width: var(--pct, 0%);
  background: linear-gradient(90deg, var(--green-deep), var(--green));
  transition: width 600ms var(--ease-out);
}
.hist-best-bar--low::after {
  background: linear-gradient(90deg, var(--amber), var(--amber-bright));
}
[data-theme="dark"] .hist-best-bar::after,
body.dark-mode .hist-best-bar::after {
  background: linear-gradient(90deg, var(--green), var(--green-bright));
}

.hist-best-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  padding-top: 0.7rem;
  margin-top: 0.4rem;
  border-top: 1px dashed var(--line);
}
.hist-best-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}
.hist-best-retake {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink-2);
  cursor: pointer;
  text-decoration: none;
  transition: background-color 150ms, border-color 150ms, color 150ms;
}
.hist-best-retake svg { width: 11px; height: 11px; }
.hist-best-retake:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
[data-theme="dark"] .hist-best-retake:hover,
body.dark-mode .hist-best-retake:hover {
  background: var(--green);
  color: #0B1220;
  border-color: var(--green);
}

/* ─── 4 · Timeline ───────────────────────────────────── */
.hist-timeline-head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  margin: 1.75rem 0 1rem;
}
.hist-timeline-head h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.1rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0;
}
.hist-timeline-head-rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}
.hist-timeline-head-count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  text-transform: uppercase;
}

.hist-timeline {
  position: relative;
  padding-left: 2.4rem;
}
.hist-timeline::before {
  content: '';
  position: absolute;
  top: 0.5rem;
  bottom: 0.5rem;
  left: 13px;
  width: 1px;
  background: var(--line);
}

.hist-day {
  margin-bottom: 1.4rem;
}
.hist-day:last-child { margin-bottom: 0; }
.hist-day-head {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.7rem;
  margin-left: -2.4rem;
  padding-left: 2.4rem;
}
.hist-day-head::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 1px var(--line-strong);
}
[data-theme="dark"] .hist-day-head::before,
body.dark-mode .hist-day-head::before { background: var(--green); }

.hist-day-label {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.hist-day-relative {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  text-transform: uppercase;
}

.hist-entry {
  position: relative;
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 0.95rem 1.1rem;
  margin-bottom: 0.45rem;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  transition: background-color 150ms ease, border-color 150ms ease;
}
.hist-entry:hover {
  background: var(--paper);
  border-color: var(--line-strong);
}
.hist-entry:last-child { margin-bottom: 0; }
.hist-entry::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 50%;
  transform: translateY(-50%);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--paper-2);
  border: 1.5px solid var(--line-strong);
}
.hist-entry--isomer::before { border-color: var(--green-deep); background: var(--green-tint); }
[data-theme="dark"] .hist-entry--isomer::before,
body.dark-mode .hist-entry--isomer::before { border-color: var(--green); }
.hist-entry--quiz::before { border-color: var(--cobalt); background: var(--cobalt-tint); }

.hist-entry-time {
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
  font-size: 0.74rem;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
}
.hist-entry-body {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
}
.hist-entry-head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}
.hist-entry-kind {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
}
.hist-entry-kind--isomer {
  background: var(--green-tint);
  color: var(--green-deep);
}
[data-theme="dark"] .hist-entry-kind--isomer,
body.dark-mode .hist-entry-kind--isomer { color: var(--green); }
.hist-entry-kind--quiz {
  background: var(--cobalt-tint);
  color: var(--cobalt);
}
.hist-entry-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1.2;
  word-break: break-word;
  min-width: 0;
}
.hist-entry-title sub {
  font-size: 0.6em;
  font-weight: 500;
  vertical-align: -0.18em;
}
.hist-entry-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.hist-entry-meta-sep { color: var(--line-strong); }
.hist-entry-pct {
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
  font-weight: 500;
  color: var(--green-deep);
}
.hist-entry-pct--good { color: var(--green); }
.hist-entry-pct--low { color: var(--amber); }
[data-theme="dark"] .hist-entry-pct,
body.dark-mode .hist-entry-pct { color: var(--green); }

.hist-entry-action {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-2);
  background: var(--paper-2);
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
  transition: background-color 150ms, border-color 150ms, color 150ms;
  flex-shrink: 0;
}
.hist-entry-action svg { width: 12px; height: 12px; }
.hist-entry-action:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
[data-theme="dark"] .hist-entry-action:hover,
body.dark-mode .hist-entry-action:hover {
  background: var(--green);
  color: #0B1220;
  border-color: var(--green);
}

@media (max-width: 720px) {
  .hist-entry {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    gap: 0.5rem 0.85rem;
  }
  .hist-entry-time { grid-column: 1 / -1; order: -1; }
  .hist-entry-body { grid-column: 1; grid-row: 2; }
  .hist-entry-action { grid-column: 2; grid-row: 2; align-self: end; }
}

/* ─── 5 · Empty / loading states ─────────────────────── */
.hist-empty {
  padding: 3rem 1.5rem;
  text-align: center;
  border: 1px dashed var(--line);
  border-radius: var(--r-4);
  background: var(--paper-2);
  color: var(--ink-muted);
}
.hist-empty-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}
.hist-empty-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.1rem;
  color: var(--ink-2);
  margin-bottom: 0.4rem;
}
.hist-empty-body {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.5;
  margin: 0 auto 1rem;
  max-width: 48ch;
}
.hist-empty-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1rem;
  border-radius: var(--r-2);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 0.86rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 150ms, border-color 150ms;
  border: 1px solid var(--ink);
}
.hist-empty-cta svg { width: 14px; height: 14px; }
.hist-empty-cta:hover { background: var(--green-deep); border-color: var(--green-deep); }
[data-theme="dark"] .hist-empty-cta,
body.dark-mode .hist-empty-cta {
  background: var(--green);
  color: #0B1220;
  border-color: var(--green);
}
[data-theme="dark"] .hist-empty-cta:hover,
body.dark-mode .hist-empty-cta:hover {
  background: var(--green-bright);
  border-color: var(--green-bright);
}

/* ─── 6 · Auth-required ────────────────────────────── */
.hist-auth-required {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1.6rem 1.75rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: var(--r-4);
  background: var(--gold-tint);
  margin-top: 0.5rem;
}
.hist-auth-required-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}
[data-theme="dark"] .hist-auth-required-eyebrow,
body.dark-mode .hist-auth-required-eyebrow { color: var(--gold-bright); }
.hist-auth-required-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.2rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0;
}
.hist-auth-required-body {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0;
  max-width: 60ch;
}

/* ─── 7 · Section hidden state ───────────────────────── */
.hist-section[hidden] { display: none; }