/* ============================================================
   GV Science — 成績推移 (grade trend) styles
   Reuses brand tokens from styles.css (--c-primary etc.) so the
   palette Tweak flows through.  ライトモード固定 / Apple純正風。
   ============================================================ */

/* ── 科目タブ（sticky）──────────────────────────────────── */
.gt-tabs-wrap {
  position: sticky;
  top: 0;
  z-index: 6;
  margin: 0 0 8px;
  padding: 6px var(--pad-x) 10px;
  background: linear-gradient(180deg, var(--c-bg) 62%, rgba(249,247,242,0));
}

/* 案A — 横スクロールチップ */
.gt-chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
}
.gt-chips::-webkit-scrollbar { display: none; }
.gt-chip-sub {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 15px;
  border-radius: var(--pill-r);
  border: 0.5px solid var(--c-divider);
  background: var(--c-surface-glass);
  color: var(--c-text-sub);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  white-space: nowrap;
  transition: background .18s, color .18s, border-color .18s, transform .1s;
}
.gt-chip-sub:active { transform: scale(0.97); }
.gt-chip-sub.on {
  background: var(--c-primary-soft);
  color: var(--c-primary-deep);
  border-color: transparent;
}
.gt-chip-dot {
  width: 6px; height: 6px; border-radius: 999px;
  background: var(--c-primary);
}

/* 案B — セグメント・コントロール */
.gt-seg {
  display: flex;
  gap: 2px;
  padding: 3px;
  border-radius: 13px;
  background: rgba(45,58,42,0.06);
  border: 0.5px solid var(--c-divider);
}
.gt-seg-btn {
  flex: 1 1 0;
  padding: 8px 6px;
  border: none;
  background: transparent;
  border-radius: 10px;
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--c-text-sub);
  cursor: pointer;
  transition: background .16s, color .16s, box-shadow .16s;
  white-space: nowrap;
}
.gt-seg-btn.on {
  background: var(--c-surface);
  color: var(--c-text);
  box-shadow: 0 1px 2px rgba(45,58,42,0.12), 0 0 0 0.5px rgba(45,58,42,0.04);
}
.gt-seg-sm { margin: 2px 0 12px; }
.gt-seg-sm .gt-seg-btn { font-size: 12.5px; padding: 7px 4px; }

/* 分野表示の切替チップ（折れ線 / 強み弱み / ヒートマップ）*/
.gt-vchips { display: flex; gap: 7px; margin: 2px 0 12px; flex-wrap: wrap; }
.gt-vchips .gt-chip-sub { font-size: 13px; padding: 7px 13px; }

/* ── 生徒名 + 科目 ─────────────────────────────────────── */
.gt-who {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 0 var(--pad-x) 14px;
  flex-wrap: wrap;
}
.gt-who-name { font-size: 15px; font-weight: 600; color: var(--c-text); }
.gt-who-sep  { font-size: 13px; color: var(--c-text-mute); }
.gt-who-subj { font-size: 15px; font-weight: 700; color: var(--c-primary-deep); }
.gt-who-en {
  margin-left: auto;
  font-size: 10.5px; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--c-text-mute);
}

/* ── card ──────────────────────────────────────────────── */
.gt-card {
  background: var(--c-surface-glass);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border: 0.5px solid rgba(255,255,255,0.65);
  box-shadow: var(--sh-card);
  border-radius: var(--card-r);
  padding: 18px 16px 16px;
}
.gt-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 14px;
}
.gt-card-title {
  font-size: 17px; font-weight: 700; letter-spacing: 0.01em;
  display: flex; align-items: baseline; gap: 8px;
}
.gt-card-title-sub { font-size: 12px; font-weight: 500; color: var(--c-text-mute); }
.gt-card-aux {
  font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em;
  color: var(--c-text-mute); text-transform: uppercase; white-space: nowrap;
}

/* ── summary ───────────────────────────────────────────── */
.gt-summary {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.gt-sum-main { display: flex; align-items: baseline; gap: 8px; }
.gt-sum-k { font-size: 12px; color: var(--c-text-sub); font-weight: 600; }
.gt-sum-v { font-size: 40px; font-weight: 700; line-height: 1; color: var(--c-text); letter-spacing: -0.02em; }
.gt-sum-u { font-size: 16px; font-weight: 600; color: var(--c-text-sub); margin-left: 2px; }
.gt-sum-delta { font-size: 13px; font-weight: 700; padding-bottom: 4px; }
.gt-sum-delta.up { color: var(--c-primary-deep); }
.gt-sum-delta.down { color: var(--c-danger); }
.gt-sum-sub { display: flex; gap: 8px; }
.gt-sum-cell {
  display: flex; flex-direction: column; align-items: flex-end; gap: 2px;
  padding: 6px 12px;
  border-radius: 12px;
  background: rgba(45,58,42,0.04);
}
.gt-sum-cell .k { font-size: 10.5px; color: var(--c-text-sub); font-weight: 600; }
.gt-sum-cell .v { font-size: 18px; font-weight: 700; color: var(--c-text); }
.gt-sum-cell.acc .v { color: var(--c-accent); }

/* range chips (期間の絞り込み) */
.gt-range { display: flex; align-items: center; gap: 6px; margin: 0 0 12px; }
.gt-range-btn {
  padding: 5px 11px; border-radius: 999px;
  border: 0.5px solid var(--c-divider);
  background: var(--c-surface);
  font: inherit; font-size: 12px; font-weight: 600;
  color: var(--c-text-sub); cursor: pointer; white-space: nowrap;
}
.gt-range-btn:active { transform: scale(0.96); }
.gt-range-btn.on {
  background: var(--c-primary-soft); color: var(--c-primary-deep);
  border-color: transparent;
}
.gt-range-count { margin-left: auto; font-size: 11.5px; color: var(--c-text-mute); white-space: nowrap; }

/* ── chart svg ─────────────────────────────────────────── */
.gt-chart { display: block; }
.gt-axis {
  font-family: var(--f-en);
  font-size: 9.5px;
  fill: var(--c-text-mute);
  letter-spacing: 0.02em;
}
.gt-axis-acc { fill: var(--c-accent); opacity: 0.75; }

/* chart strokes & dots render fully visible by default.  (This host can
   freeze CSS entrance animations at their first frame, so we must NOT hide
   content behind an animation — same reason styles.css disabled .fade-up.) */
.gt-draw { }
.gt-dot { }

/* ── legend ────────────────────────────────────────────── */
.gt-legend {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin: 10px 2px 0;
  font-size: 12px; color: var(--c-text-sub);
}
.gt-leg { display: inline-flex; align-items: center; gap: 6px; }
.gt-leg-line { width: 16px; height: 0; border-top-width: 3px; border-top-style: solid; border-radius: 2px; }
.gt-leg-line.main { border-color: var(--c-primary-deep); }
.gt-leg-line.dash { border-top-style: dashed; border-top-width: 2px; border-color: var(--c-text-mute); }
.gt-leg-line.acc { border-color: var(--c-accent); opacity: 0.7; }
/* 分野別チャート凡例（線種のみ示す中立色。色は分野ごとに変わるため）— GV Science と統一 */
.gt-leg-line.solid-n { border-top-width: 3px; border-color: var(--c-text-sub); }
.gt-leg-line.dash-n { border-top-style: dashed; border-top-width: 2px; border-color: var(--c-text-sub); }
.gt-leg-line.thin-n { border-top-width: 1.5px; border-color: var(--c-text-sub); opacity: 0.5; }
.gt-leg-note { color: var(--c-text-mute); }

/* ── recent tests list ─────────────────────────────────── */
.gt-tests {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 0.5px solid var(--c-divider);
}
.gt-tests-h {
  display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--c-text-sub);
  margin-bottom: 6px;
}
.gt-tests-count {
  font-size: 11px; font-weight: 600; letter-spacing: 0;
  text-transform: none; color: var(--c-text-mute); white-space: nowrap;
}
/* fixed-height internal scroller (lists scroll inside the card) */
.gt-scroll {
  max-height: 196px;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  margin: 0 -4px;
  padding: 0 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--c-divider) transparent;
}
.gt-scroll::-webkit-scrollbar { width: 6px; }
.gt-scroll::-webkit-scrollbar-thumb { background: var(--c-divider); border-radius: 999px; }
.gt-scroll::-webkit-scrollbar-track { background: transparent; }
.gt-test-row {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 0;
  font-size: 13px;
}
.gt-test-row + .gt-test-row { border-top: 0.5px solid var(--c-divider-soft); }
.gt-test-date { color: var(--c-text-mute); font-size: 12px; width: 42px; flex: none; }
.gt-test-name { flex: 1; min-width: 0; color: var(--c-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gt-test-score { font-weight: 700; color: var(--c-text); flex: none; }
.gt-test-score small { font-size: 10px; font-weight: 600; color: var(--c-text-sub); margin-left: 1px; }
.gt-test-hen {
  flex: none; font-size: 11.5px; font-weight: 600;
  color: var(--c-accent); white-space: nowrap;
  background: var(--c-accent-soft);
  padding: 2px 8px; border-radius: 999px;
}

/* per-field monthly detail (分野ごとの月次) */
.gt-fd {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 0.5px solid var(--c-divider);
}
.gt-fd-group { padding: 4px 0 6px; }
.gt-fd-group + .gt-fd-group { border-top: 0.5px solid var(--c-divider-soft); }
.gt-fd-name {
  display: flex; align-items: center; gap: 7px;
  font-size: 13px; font-weight: 600; color: var(--c-text);
  margin: 6px 0 2px;
}
.gt-fd-row {
  display: flex; align-items: center; gap: 10px;
  padding: 5px 0 5px 16px;
  font-size: 12.5px;
}
.gt-fd-month { width: 36px; flex: none; color: var(--c-text-mute); font-size: 12px; }
.gt-fd-rate { flex: 1; font-weight: 700; color: var(--c-text); }
.gt-fd-rate small { font-size: 10px; font-weight: 600; color: var(--c-text-sub); margin-left: 1px; }
.gt-fd-hen {
  flex: none; font-size: 11.5px; font-weight: 600;
  color: var(--c-accent); white-space: nowrap;
  background: var(--c-accent-soft);
  padding: 2px 8px; border-radius: 999px;
}

/* ── field presets ─────────────────────────────────────── */
.gt-presets { display: flex; align-items: center; gap: 7px; margin-bottom: 10px; }
.gt-preset {
  padding: 5px 11px; border-radius: 999px;
  border: 0.5px solid var(--c-divider);
  background: var(--c-surface);
  font: inherit; font-size: 12px; font-weight: 600;
  color: var(--c-text-sub); cursor: pointer; white-space: nowrap;
}
.gt-preset:active { transform: scale(0.96); }
.gt-presets-count { margin-left: auto; font-size: 12px; color: var(--c-text-mute); }

/* ── field chips (legend + toggles) ────────────────────── */
.gt-fieldchips {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 12px;
  max-height: 132px; overflow-y: auto;
  scrollbar-width: thin;
  -webkit-mask-image: linear-gradient(180deg, #000 84%, transparent);
  mask-image: linear-gradient(180deg, #000 84%, transparent);
  padding-bottom: 6px;
}
.gt-fchip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px 5px 8px;
  border-radius: 999px;
  border: 0.5px solid var(--c-divider);
  background: var(--c-surface);
  color: var(--c-text-mute);
  font: inherit; font-size: 12px; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  transition: transform .1s, background .15s;
}
.gt-fchip:active { transform: scale(0.96); }
.gt-fchip-dot { width: 7px; height: 7px; border-radius: 999px; flex: none; }

/* ── notes ─────────────────────────────────────────────── */
.gt-note {
  margin-top: 12px;
  font-size: 12px; line-height: 1.6;
  color: var(--c-text-sub);
}
.gt-note-soft { color: var(--c-text-mute); }

/* ── heatmap (②) ───────────────────────────────────────── */
.gt-heat { margin-top: 4px; }
.gt-heat-grid {
  display: grid;
  gap: 3px;
  align-items: stretch;
}
.gt-heat-corner { }
.gt-heat-colh {
  font-family: var(--f-en);
  font-size: 11px; font-weight: 600;
  color: var(--c-text-sub);
  text-align: center;
  padding-bottom: 2px;
}
.gt-heat-rowh {
  font-size: 12px;
  color: var(--c-text);
  display: flex; align-items: center;
  padding-right: 6px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.gt-heat-cell {
  border-radius: 7px;
  min-height: 30px;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600;
}
.gt-heat-legend {
  display: flex; align-items: center; gap: 8px;
  margin-top: 12px;
  font-size: 11px; color: var(--c-text-sub);
}
.gt-heat-ramp {
  flex: 1; max-width: 120px; height: 8px; border-radius: 999px;
  background: linear-gradient(90deg, rgba(95,129,89,0.10), rgba(95,129,89,0.92));
}
.gt-heat-unit { margin-left: auto; color: var(--c-text-mute); font-size: 10px; letter-spacing: 0.08em; }

/* ── strengths / weaknesses (③) ────────────────────────── */
.gt-sw { display: flex; flex-direction: column; gap: 18px; }
.gt-sw-h {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--c-text-sub);
  margin-bottom: 8px;
}
.gt-sw-badge {
  font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: 999px;
}
.gt-sw-badge.strong { background: var(--c-primary-soft); color: var(--c-primary-deep); }
.gt-sw-badge.weak { background: var(--c-accent-soft); color: #B14A0C; }
.gt-sw-row {
  position: relative;
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(45,58,42,0.03);
  margin-bottom: 5px;
}
.gt-sw-bar {
  position: absolute; left: 0; top: 0; bottom: 0;
  opacity: 0.12;
  z-index: 0;
}
.gt-sw-name { position: relative; z-index: 1; flex: 1; min-width: 0; font-size: 13.5px; color: var(--c-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gt-sw-v { position: relative; z-index: 1; font-size: 14px; font-weight: 700; color: var(--c-text); flex: none; }
.gt-sw-d { position: relative; z-index: 1; font-size: 11.5px; font-weight: 600; flex: none; width: 38px; text-align: right; }
.gt-sw-d.up { color: var(--c-primary-deep); }
.gt-sw-d.down { color: var(--c-danger); }

/* ── crossfade on subject switch (transform-only — freeze-safe) ───── */
.gt-fade { opacity: 1; animation: gtFade 0.24s ease both; }
@keyframes gtFade {
  from { transform: translateY(5px); }
  to   { transform: none; }
}

/* ── states ────────────────────────────────────────────── */
.gt-state { padding: 0 var(--pad-x); display: flex; flex-direction: column; gap: 14px; }
.gt-skel { padding: 18px 16px; }
.gt-skel-bar, .gt-skel-plot {
  border-radius: 8px;
  background: linear-gradient(90deg, rgba(45,58,42,0.05) 25%, rgba(45,58,42,0.10) 37%, rgba(45,58,42,0.05) 63%);
  background-size: 400% 100%;
  animation: gtShimmer 1.4s ease infinite;
}
.gt-skel-plot { margin-top: 14px; height: 150px; }
@keyframes gtShimmer { from { background-position: 100% 0; } to { background-position: 0 0; } }

.gt-empty {
  margin: 8px var(--pad-x);
  padding: 36px 22px;
  text-align: center;
  background: var(--c-surface-glass);
  border: 0.5px solid rgba(255,255,255,0.7);
  border-radius: var(--card-r);
  box-shadow: var(--sh-card);
}
.gt-empty-ic {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 999px;
  background: var(--c-primary-soft); color: var(--c-primary-deep);
  margin-bottom: 14px;
}
.gt-empty-t1 { font-size: 16px; font-weight: 700; color: var(--c-text); }
.gt-empty-t2 { font-size: 13px; color: var(--c-text-sub); line-height: 1.6; margin-top: 6px; text-wrap: pretty; }

/* ── home entry card ───────────────────────────────────── */
.gt-home-cta {
  margin: 2px var(--pad-x) 18px;
  width: calc(100% - var(--pad-x) * 2);
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px;
  border: 0.5px solid rgba(255,255,255,0.7);
  border-radius: 18px;
  background: var(--c-surface-glass);
  box-shadow: var(--sh-card);
  cursor: pointer; text-align: left; font: inherit;
  transition: transform .12s;
}
.gt-home-cta:active { transform: scale(0.99); }
.gt-home-ic {
  flex: none; width: 42px; height: 42px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--c-primary-soft); color: var(--c-primary-deep);
}
.gt-home-tx { flex: 1; min-width: 0; }
.gt-home-tx .t1 { font-size: 16px; font-weight: 600; color: var(--c-text); letter-spacing: 0.01em; }
.gt-home-tx .t2 { font-size: 12.5px; color: var(--c-text-sub); margin-top: 2px; }
.gt-home-spark { flex: none; display: flex; align-items: center; }