/* Science of Reading (SoR) Interactive Studio — EduWonderLab / The Language Page
   Google-Grade Editorial & Cognitive Design System
   Tokens, Layout, and Styling for:
     1. Scarborough's Reading Rope Explorer
     2. Simple View of Reading (SVR) Formula & Diagnostic Profiles
     3. Vowel Valley & Consonant Articulation Sound Wall
     4. Orthographic Mapping & Elkonin Heart-Word Workbench
     5. 6 Syllable Types (CLOVER) & Division Chopper
     6. Morphology Matrix & Spanish Cognate Bridge */

/* ── Container & Layout ─────────────────────────────────────────────── */
.sor-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 5rem;
  color: var(--ink, #0f172a);
}

/* ── Hero Header ─────────────────────────────────────────────────────── */
.sor-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  margin-bottom: 2rem;
  padding: 2.25rem 2.5rem;
  background:
    radial-gradient(1000px 400px at 95% -10%, rgb(7 85 104 / 12%), transparent 70%),
    radial-gradient(800px 350px at 5% 110%, rgb(46 74 148 / 10%), transparent 70%),
    linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid rgb(226 232 240 / 90%);
  border-radius: var(--r-xl, 28px);
  box-shadow:
    0 1px 2px rgb(15 23 42 / 4%),
    0 8px 24px -8px rgb(15 23 42 / 6%),
    inset 0 1px 0 rgb(255 255 255 / 90%);
  position: relative;
  overflow: hidden;
}

.sor-header::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--ocean-600, #15969a), var(--reading, #2e4a94), var(--accent, #d28b58));
}

.sor-title-wrap {
  flex: 1 1 36rem;
}

.sor-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ocean-900, #075568);
  margin-bottom: 0.6rem;
}

.sor-title-wrap h1 {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: clamp(2rem, 1.6rem + 1.6vw, 2.75rem);
  font-weight: 650;
  line-height: 1.15;
  color: var(--mi-900, #121c3f);
  margin: 0 0 0.85rem;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.sor-lead {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink-2, #334155);
  max-width: 64ch;
  margin: 0;
  text-wrap: pretty;
}

.sor-evidence-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.65rem 1.15rem;
  background: rgb(255 255 255 / 95%);
  border: 1px solid rgb(21 150 154 / 35%);
  border-radius: 9999px;
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--ocean-900, #075568);
  box-shadow: 0 4px 14px -3px rgb(7 85 104 / 12%), inset 0 1px 0 #fff;
  flex: none;
  white-space: nowrap;
}

.sor-evidence-badge .ico {
  color: var(--ocean-600, #15969a);
  width: 1.25rem;
  height: 1.25rem;
}

/* ── Navigation Tabs ─────────────────────────────────────────────────── */
.sor-nav-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.5rem;
  margin-bottom: 2rem;
  background: var(--surface-2, #f1f5f9);
  padding: 0.45rem;
  border-radius: var(--radius, 16px);
  border: 1px solid rgb(226 232 240 / 80%);
}

.sor-tab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-2, #334155);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--radius-sm, 10px);
  cursor: pointer;
  transition: all 0.18s cubic-bezier(0.2, 0, 0, 1);
  text-align: center;
  line-height: 1.25;
}

.sor-tab-btn .ico {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--ink-3, #64748b);
  transition: color 0.18s ease;
  flex: none;
}

.sor-tab-btn:hover {
  background: rgb(255 255 255 / 75%);
  color: var(--ocean-900, #075568);
}

.sor-tab-btn:hover .ico {
  color: var(--ocean-600, #15969a);
}

.sor-tab-btn.active {
  background: #ffffff;
  color: var(--brand, #1d2b58);
  border-color: rgb(203 213 225 / 80%);
  box-shadow: 0 2px 8px -2px rgb(15 23 42 / 10%), 0 1px 2px rgb(15 23 42 / 6%);
}

.sor-tab-btn.active .ico {
  color: var(--ocean-600, #15969a);
}

/* ── Panel Stages ────────────────────────────────────────────────────── */
.sor-panel-section {
  background: #ffffff;
  border: 1px solid rgb(226 232 240 / 85%);
  border-radius: var(--r-xl, 24px);
  padding: clamp(1.5rem, 3vw, 2.75rem);
  box-shadow:
    0 1px 3px rgb(15 23 42 / 4%),
    0 12px 32px -12px rgb(15 23 42 / 6%),
    inset 0 1px 0 rgb(255 255 255 / 90%);
  position: relative;
}

.sor-section-banner {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--surface-2, #f1f5f9);
}

.sor-section-banner h3 {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: clamp(1.4rem, 1.2rem + 0.6vw, 1.85rem);
  font-weight: 650;
  color: var(--mi-900, #121c3f);
  margin: 0 0 0.5rem;
  letter-spacing: -0.015em;
}

.sor-section-banner p {
  color: var(--ink-2, #334155);
  font-size: 1rem;
  line-height: 1.6;
  max-width: 72ch;
  margin: 0;
}

/* ── Tab 1: Scarborough's Reading Rope Explorer ─────────────────────── */
.sor-braid-control {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius, 16px);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  box-shadow: inset 0 1px 2px rgb(0 0 0 / 2%);
}

.sor-braid-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--ink-2, #334155);
}

.sor-braid-header strong {
  color: var(--ocean-900, #075568);
  font-size: 1rem;
  background: #ffffff;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  border: 1px solid #cbd5e1;
  box-shadow: 0 1px 3px rgb(0 0 0 / 4%);
}

.sor-braid-slider {
  width: 100%;
  height: 8px;
  accent-color: var(--ocean-600, #15969a);
  cursor: pointer;
  border-radius: 9999px;
}

.sor-braid-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--ink-3, #64748b);
  font-weight: 700;
}

.sor-rope-svg-wrap {
  width: 100%;
  overflow-x: auto;
  background:
    radial-gradient(800px 300px at 100% 50%, rgb(15 118 110 / 5%), transparent 70%),
    linear-gradient(180deg, #ffffff 0%, #fbfcfe 100%);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius, 16px);
  padding: 1.25rem;
  margin-bottom: 2rem;
  box-shadow: inset 0 1px 3px rgb(0 0 0 / 2%), 0 4px 12px -4px rgb(0 0 0 / 4%);
}

.sor-rope-svg {
  display: block;
  width: 100%;
  min-width: 760px;
  height: auto;
  margin: 0 auto;
}

.sor-strands-comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.sor-strand-column {
  border-radius: var(--radius, 16px);
  padding: 1.75rem;
  border: 1px solid transparent;
}

.sor-strand-column.lang-comp {
  background: linear-gradient(180deg, #f0f7ff 0%, #f8faff 100%);
  border-color: #bfdbfe;
}

.sor-strand-column.word-rec {
  background: linear-gradient(180deg, #f0fdf9 0%, #f7fefc 100%);
  border-color: #a7f3d0;
}

.sor-strand-column h4 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-weight: 650;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sor-strand-column.lang-comp h4 {
  color: #1e3a8a;
}

.sor-strand-column.word-rec h4 {
  color: #064e3b;
}

.sor-strand-subtitle {
  font-size: 0.875rem;
  font-weight: 700;
  margin: 0 0 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sor-strand-column.lang-comp .sor-strand-subtitle {
  color: #2563eb;
}

.sor-strand-column.word-rec .sor-strand-subtitle {
  color: #059669;
}

.sor-strand-cards {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.strand-card {
  background: #ffffff;
  border-radius: var(--radius-sm, 10px);
  padding: 1.15rem;
  box-shadow: 0 1px 3px rgb(0 0 0 / 5%), 0 4px 10px -2px rgb(0 0 0 / 3%);
  border: 1px solid rgb(226 232 240 / 80%);
  border-left: 4px solid var(--ocean-600, #15969a);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.sor-strand-column.lang-comp .strand-card {
  border-left-color: #2563eb;
}

.sor-strand-column.word-rec .strand-card {
  border-left-color: #059669;
}

.strand-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px -4px rgb(0 0 0 / 8%);
}

.strand-card strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.35rem;
  color: var(--ink, #0f172a);
}

.strand-card p {
  font-size: 0.875rem;
  color: var(--ink-2, #334155);
  margin: 0 0 0.65rem;
  line-height: 1.45;
}

.strand-card small {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
  color: var(--ocean-900, #075568);
  background: #f0fdfa;
  border: 1px solid #ccfbf1;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  line-height: 1.35;
}

.strand-card small .ico {
  width: 1rem;
  height: 1rem;
  color: var(--ocean-600, #15969a);
  flex: none;
}

/* ── Tab 2: Simple View of Reading (SVR) ────────────────────────────── */
.svr-formula-hero {
  background:
    radial-gradient(circle at 50% 50%, rgb(46 74 148 / 6%), transparent 70%),
    linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius, 16px);
  padding: 2rem;
  text-align: center;
  margin-bottom: 2rem;
}

.svr-formula-display {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: clamp(2rem, 1.5rem + 2vw, 3rem);
  font-weight: 700;
  color: var(--brand, #1d2b58);
  margin-bottom: 0.75rem;
  letter-spacing: -0.015em;
}

.svr-formula-display span {
  color: var(--ocean-600, #15969a);
}

.svr-formula-lead {
  font-size: 1rem;
  color: var(--ink-2, #334155);
  max-width: 60ch;
  margin: 0 auto;
}

.svr-profiles-section {
  margin-bottom: 2rem;
}

.svr-profiles-title {
  font-size: 0.9375rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-3, #64748b);
  margin-bottom: 0.85rem;
}

.svr-profiles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.svr-profile-card {
  background: #ffffff;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-sm, 12px);
  padding: 1.15rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  box-shadow: 0 1px 3px rgb(0 0 0 / 4%);
}

.svr-profile-card:hover {
  border-color: var(--ocean-600, #15969a);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px -4px rgb(7 85 104 / 12%);
}

.svr-profile-card.active {
  border-color: var(--ocean-900, #075568);
  background: #f0fdfa;
  box-shadow: 0 0 0 2px var(--ocean-600, #15969a);
}

.svr-profile-name {
  display: block;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink, #0f172a);
  margin-bottom: 0.35rem;
}

.svr-profile-desc {
  font-size: 0.8125rem;
  color: var(--ink-3, #64748b);
  line-height: 1.4;
  margin: 0 0 0.75rem;
}

.svr-profile-stats {
  display: flex;
  gap: 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
}

.svr-profile-stats span {
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: #f1f5f9;
  color: var(--ink-2, #334155);
}

.svr-calc-card {
  background: #ffffff;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius, 16px);
  padding: 2rem;
  box-shadow: 0 4px 16px -4px rgb(15 23 42 / 6%);
}

.svr-calc-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1.2fr;
  gap: 1.25rem;
  align-items: center;
}

.svr-input-group label {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--ink, #0f172a);
  margin-bottom: 0.5rem;
}

.svr-input-group label span {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 1.15rem;
  color: var(--ocean-900, #075568);
}

.svr-input-group input[type="range"] {
  width: 100%;
  accent-color: var(--ocean-600, #15969a);
  height: 6px;
  cursor: pointer;
}

.svr-input-group small {
  display: block;
  font-size: 0.8125rem;
  color: var(--ink-3, #64748b);
  margin-top: 0.4rem;
}

.svr-math-op {
  font-size: 2rem;
  font-weight: 800;
  color: #cbd5e1;
  text-align: center;
}

.svr-result-box {
  background: linear-gradient(135deg, #f0f7ff 0%, #e0f2fe 100%);
  border: 2px solid #38bdf8;
  border-radius: var(--radius, 14px);
  padding: 1.25rem;
  text-align: center;
  box-shadow: 0 4px 12px -2px rgb(2 132 199 / 12%);
}

.svr-result-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #0369a1;
  margin-bottom: 0.25rem;
}

.svr-result-val {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: clamp(2rem, 1.8rem + 1vw, 2.75rem);
  font-weight: 750;
  color: #0284c7;
  line-height: 1;
}

.svr-result-status {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.2rem 0.65rem;
  border-radius: 9999px;
  background: #ffffff;
  color: #0369a1;
}

/* ── Tab 3: Sound Wall & Vowel Valley ───────────────────────────────── */
.sor-vowel-valley-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(136px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.vowel-card {
  background: #ffffff;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-sm, 14px);
  padding: 1.15rem 0.75rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  box-shadow: 0 1px 3px rgb(0 0 0 / 4%);
}

.vowel-card:hover {
  transform: translateY(-3px);
  border-color: var(--ocean-600, #15969a);
  box-shadow: 0 8px 20px -4px rgb(7 85 104 / 14%);
}

.phoneme-symbol {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--ocean-900, #075568);
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  line-height: 1.1;
}

.vowel-mouth-shape {
  width: 48px;
  height: 32px;
  margin: 0.4rem 0;
}

.vowel-keyword {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink, #0f172a);
  margin-top: 0.15rem;
}

.vowel-position {
  font-size: 0.75rem;
  color: var(--ink-3, #64748b);
  margin-top: 0.25rem;
  line-height: 1.25;
}

.sor-audio-btn {
  margin-top: 0.65rem;
  background: var(--surface-2, #f1f5f9);
  border: 1px solid #cbd5e1;
  border-radius: 9999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ocean-900, #075568);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.15s ease;
}

.sor-audio-btn .ico {
  width: 0.95rem;
  height: 0.95rem;
}

.sor-audio-btn:hover {
  background: var(--ocean-900, #075568);
  color: #ffffff;
  border-color: var(--ocean-900, #075568);
}

.sor-consonants-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.consonant-manner-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-sm, 12px);
  padding: 1.35rem;
  box-shadow: 0 1px 3px rgb(0 0 0 / 3%);
}

.consonant-manner-card h5 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 1.125rem;
  color: var(--brand, #1d2b58);
}

.consonant-manner-card p {
  font-size: 0.8125rem;
  color: var(--ink-3, #64748b);
  margin: 0 0 1rem;
}

.consonant-pairs-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.consonant-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 0.55rem 0.85rem;
  font-size: 0.875rem;
}

.badge-unvoiced {
  color: var(--ink-2, #334155);
  font-weight: 700;
}

.badge-voiced {
  color: var(--ocean-900, #075568);
  font-weight: 700;
}

/* ── Tab 4: Orthographic Mapping & Heart Words ──────────────────────── */
.sor-mapping-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  align-items: center;
}

.word-picker-btn {
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  border-radius: 9999px;
  padding: 0.45rem 0.95rem;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--ink, #0f172a);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.18s ease;
}

.word-picker-btn .ico {
  width: 1rem;
  height: 1rem;
  color: #f43f5e;
}

.word-picker-btn:hover {
  border-color: var(--ocean-600, #15969a);
  color: var(--ocean-900, #075568);
}

.word-picker-btn.active {
  background: var(--ocean-900, #075568);
  color: #ffffff;
  border-color: var(--ocean-900, #075568);
}

.word-picker-btn.active .ico {
  color: #fecdd3;
}

.word-picker-btn.is-heart {
  border-color: #fda4af;
}

.word-picker-btn.is-heart.active {
  background: #be123c;
  border-color: #be123c;
}

.sor-mapping-workbench {
  background:
    radial-gradient(circle at 50% 0%, rgb(5 150 105 / 5%), transparent 60%),
    linear-gradient(180deg, #f0fdf4 0%, #ffffff 100%);
  border: 1.5px solid #86efac;
  border-radius: var(--r-xl, 24px);
  padding: 2.5rem 2rem;
  margin-bottom: 2rem;
  text-align: center;
  box-shadow: 0 4px 16px -4px rgb(5 150 105 / 8%);
}

.workbench-word-hero {
  font-size: clamp(2.25rem, 1.8rem + 1.8vw, 3.25rem);
  font-weight: 750;
  letter-spacing: 0.08em;
  color: var(--brand, #1d2b58);
  margin-bottom: 0.4rem;
  font-family: var(--font-display, "Fraunces", Georgia, serif);
}

.workbench-instruction {
  font-size: 1rem;
  color: var(--ink-2, #334155);
  margin-bottom: 2.25rem;
}

.elkonin-boxes-container {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 1.5rem;
  margin: 1.5rem 0 2.25rem;
  flex-wrap: wrap;
}

.elkonin-box-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
}

.sound-chip {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px -2px rgb(16 185 129 / 35%);
  cursor: pointer;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.sound-chip:hover {
  transform: translateY(-4px) scale(1.08);
}

.elkonin-box {
  width: 96px;
  height: 96px;
  border: 2.5px solid #059669;
  background: #ffffff;
  border-radius: var(--radius-sm, 14px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: 0 4px 14px -3px rgb(0 0 0 / 6%), inset 0 1px 0 #fff;
}

.elkonin-box.has-heart {
  border-color: #e11d48;
  background: #fff1f2;
}

.heart-marker {
  position: absolute;
  top: -12px;
  right: -8px;
  width: 24px;
  height: 24px;
  background: #e11d48;
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgb(225 29 72 / 40%);
}

.heart-marker .ico {
  width: 14px;
  height: 14px;
}

.grapheme-letter {
  font-size: 2.25rem;
  font-weight: 750;
  color: var(--ink, #0f172a);
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  line-height: 1;
}

.phoneme-tag {
  font-size: 0.8125rem;
  font-weight: 700;
  color: #059669;
  margin-top: 0.35rem;
}

.elkonin-box.has-heart .phoneme-tag {
  color: #e11d48;
}

.heart-explanation {
  background: #fff1f2;
  border: 1px solid #fecdd3;
  border-radius: var(--radius-sm, 12px);
  padding: 1rem 1.5rem;
  margin: 1.5rem auto 0;
  max-width: 620px;
  font-size: 0.9375rem;
  color: #9f1239;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-align: left;
}

.heart-explanation .ico {
  color: #e11d48;
  width: 1.35rem;
  height: 1.35rem;
  flex: none;
}

/* ── Tab 5: 6 Syllable Types & Division Chopper ─────────────────────── */
.sor-syllables-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.syllable-card {
  background: #ffffff;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius, 14px);
  padding: 1.5rem;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  box-shadow: 0 1px 3px rgb(0 0 0 / 4%);
}

.syllable-card:hover {
  border-color: var(--ocean-600, #15969a);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -4px rgb(7 85 104 / 12%);
}

.syllable-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.syllable-type-badge {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: #dbeafe;
  color: #1e40af;
}

.syllable-card h4 {
  margin: 0;
  font-size: 1.15rem;
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  color: var(--ink, #0f172a);
}

.syllable-rule {
  font-size: 0.875rem;
  color: var(--ink-2, #334155);
  line-height: 1.45;
  margin: 0.5rem 0 1rem;
}

.syllable-examples-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.syllable-chip {
  background: var(--surface-2, #f1f5f9);
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 0.25rem 0.6rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--ocean-900, #075568);
}

.sor-chopper-box {
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  border: 1.5px solid #fde68a;
  border-radius: var(--r-xl, 20px);
  padding: 2.25rem 2rem;
  text-align: center;
  margin-top: 2rem;
  box-shadow: 0 4px 14px -3px rgb(217 119 6 / 10%);
}

.sor-chopper-box h4 {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 1.35rem;
  color: #92400e;
  margin: 0 0 0.5rem;
}

.chopper-word-display {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin: 1.75rem 0;
}

.chop-letter-block {
  padding: 0.65rem 1rem;
  background: #ffffff;
  border: 2px solid #cbd5e1;
  border-radius: var(--radius-sm, 10px);
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 2.25rem;
  font-weight: 750;
  color: var(--ink, #0f172a);
  box-shadow: 0 2px 6px rgb(0 0 0 / 4%);
}

.chop-cut-button {
  background: #d97706;
  color: #ffffff;
  border: none;
  border-radius: 8px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgb(217 119 6 / 35%);
}

.chop-cut-button .ico {
  width: 1.25rem;
  height: 1.25rem;
}

.chop-cut-button:hover {
  background: #b45309;
  transform: scale(1.12);
}

.chopper-feedback {
  font-size: 1rem;
  font-weight: 700;
  margin-top: 1.25rem;
  min-height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

/* ── Tab 6: Morphology & Spanish Cognate Matrix ─────────────────────── */
.sor-morphology-studio {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius, 16px);
  padding: 2rem;
  margin-top: 2rem;
}

.morph-generator-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.morph-column h5 {
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 1.125rem;
  color: var(--brand, #1d2b58);
  margin: 0 0 0.85rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--surface-2, #f1f5f9);
}

.morph-item-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  background: #ffffff;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-sm, 10px);
  font-size: 0.9375rem;
  cursor: pointer;
  transition: all 0.18s ease;
  box-shadow: 0 1px 2px rgb(0 0 0 / 2%);
}

.morph-item-btn:hover {
  border-color: var(--ocean-600, #15969a);
  background: #f0fdfa;
}

.morph-item-btn.active {
  background: var(--ocean-900, #075568);
  color: #ffffff;
  border-color: var(--ocean-900, #075568);
  box-shadow: 0 4px 12px -2px rgb(7 85 104 / 25%);
}

.morph-item-btn strong {
  display: block;
  font-size: 1rem;
}

.morph-item-btn small {
  display: block;
  font-size: 0.75rem;
  opacity: 0.85;
  margin-top: 0.2rem;
}

.morph-result-banner {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  border: 1.5px solid #a7f3d0;
  border-radius: var(--radius, 16px);
  padding: 2rem;
  text-align: center;
  box-shadow: 0 4px 14px -3px rgb(5 150 105 / 10%);
}

.morph-constructed-word {
  font-size: clamp(2rem, 1.8rem + 1.2vw, 2.75rem);
  font-weight: 750;
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  color: #065f46;
  margin-bottom: 0.5rem;
}

.morph-constructed-def {
  font-size: 1.0625rem;
  color: #047857;
  max-width: 60ch;
  margin: 0 auto;
  line-height: 1.5;
}

.morph-cognate-bridge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1rem;
  font-size: 0.9375rem;
  font-weight: 700;
  background: #ffffff;
  padding: 0.45rem 1rem;
  border-radius: 9999px;
  color: #065f46;
  box-shadow: 0 2px 6px rgb(0 0 0 / 6%);
}

.morph-cognate-bridge .ico {
  color: #059669;
}

/* ── Linnea Ehri's 4 Phases ────────────────────────────────────────── */
.sor-ehri-section {
  margin-top: 2.25rem;
  padding-top: 1.75rem;
  border-top: 1.5px solid var(--line);
}

.sor-section-sub {
  font-size: 0.9375rem;
  color: var(--ink-2);
  margin: 0 0 1.25rem;
  line-height: 1.5;
}

.sor-ehri-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.ehri-card {
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: var(--r-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: var(--shadow);
}

.ehri-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand-soft);
  box-shadow: var(--shadow-lift);
}

.ehri-phase-badge {
  display: inline-block;
  align-self: flex-start;
  background: #f0fdf4;
  color: #166534;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  margin-bottom: 0.6rem;
  border: 1px solid #bbf7d0;
}

.ehri-title {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 800;
  color: var(--ink);
  font-family: 'Fraunces', Georgia, serif;
}

.ehri-desc {
  font-size: 0.875rem;
  color: var(--ink-2);
  margin: 0 0 0.85rem;
  line-height: 1.45;
  flex: 1;
}

.ehri-target {
  font-size: 0.8125rem;
  background: var(--surface-2);
  border: 1px solid var(--line);
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius);
  color: var(--brand-deep);
  line-height: 1.4;
}

/* ── Responsive Refinements ─────────────────────────────────────────── */
@media (max-width: 860px) {
  .sor-header {
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
  }
  .sor-calc-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .svr-math-op {
    display: none;
  }
}

@media (max-width: 640px) {
  .sor-container {
    padding: 1rem 0.75rem 3rem;
  }
  .sor-panel-section {
    padding: 1.25rem;
  }
  .sor-nav-tabs {
    grid-template-columns: 1fr;
  }
  .elkonin-box {
    width: 76px;
    height: 76px;
  }
  .grapheme-letter {
    font-size: 1.65rem;
  }
}

/* ── Ready-to-teach lesson and practice arcade ─────────────────────── */
.sor-lesson-panel { display: grid; gap: 1.5rem; }
.sor-grade-switch { display: flex; align-items: center; flex-wrap: wrap; gap: .5rem; color: #17324d; font-weight: 700; }
.sor-grade-switch > span { margin-right: .25rem; }
.sor-grade-switch a { min-height: 44px; display: inline-flex; align-items: center; padding: .55rem .9rem; border: 1px solid #cbd5df; border-radius: 999px; color: #17324d; text-decoration: none; background: #fff; }
.sor-grade-switch a.active { color: #fff; background: #17324d; border-color: #17324d; }
.sor-lesson-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 1.5rem; padding: clamp(1.25rem, 3vw, 2rem); border-radius: 20px; color: #17324d; background: linear-gradient(125deg,#f7f4ec,#fff 65%,#eaf5f3); border: 1px solid #dce5e4; }
.sor-lesson-heading h2,.sor-practice-top h2 { font-family: var(--font-display,Georgia,serif); font-size: clamp(1.5rem,2.4vw,2.1rem); line-height: 1.2; margin: .3rem 0 .6rem; color: #17324d; }
.sor-lesson-heading p,.sor-practice-top p { margin: 0; max-width: 65ch; line-height: 1.6; color: #435363; }
.sor-lesson-meta { display: grid; gap: .5rem; min-width: 210px; padding: 1rem; background: #fff; border: 1px solid #dce5e4; border-radius: 14px; font-size: .88rem; font-weight: 650; }
.sor-lesson-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; }
.sor-lesson-step { display: flex; gap: .9rem; padding: 1.2rem; background: #fff; border: 1px solid #dbe3e8; border-radius: 16px; box-shadow: 0 5px 18px rgb(23 50 77 / 5%); }
.sor-step-number { flex: 0 0 2.1rem; height: 2.1rem; display: grid; place-items: center; border-radius: 50%; background: #d9f0ed; color: #145e5b; font-weight: 850; }
.sor-lesson-step h3 { margin: .15rem 0 .55rem; color: #17324d; font-size: 1.08rem; }
.sor-lesson-step p { margin: 0 0 .8rem; line-height: 1.65; color: #354655; }
.sor-teacher-move,.sor-teacher-note,.sor-sentence-frame { padding: .7rem .85rem; background: #f4f7f7; border-left: 3px solid #1fa6a2; border-radius: 0 9px 9px 0; line-height: 1.55; }
.sor-word-build,.sor-word-clues { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin: .85rem 0; }
.sor-word-build span,.sor-word-build strong,.sor-word-clues span { padding: .42rem .65rem; border: 1px solid #cedbdc; border-radius: 8px; background: #f8fbfa; color: #17324d; }
.sor-word-build strong { background: #d9f0ed; border-color: #98d4cf; }
.sor-passage { padding: 1rem; border-radius: 12px; background: #fbf8f1; font-size: 1.02rem; }
.sor-practice-zone { padding: clamp(1.15rem,3vw,1.75rem); border-radius: 20px; background: #f4f8f7; border: 1px solid #cfe2df; }
.sor-practice-top { display:flex; align-items:flex-start; justify-content:space-between; gap:1rem; }
.sor-secondary-button,.sor-primary-button { min-height:44px; display:inline-flex; align-items:center; justify-content:center; gap:.5rem; padding:.65rem 1rem; border-radius:10px; font:inherit; font-weight:750; cursor:pointer; }
.sor-secondary-button { border:1px solid #b9c8ce; background:#fff; color:#17324d; }
.sor-primary-button { border:1px solid #17324d; background:#17324d; color:#fff; }
.sor-game-modes { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:.75rem; margin:1.2rem 0; }
.sor-game-modes button { min-height:75px; display:grid; grid-template-columns:1.5rem 1fr; align-content:center; align-items:center; column-gap:.6rem; padding:.8rem 1rem; text-align:left; border:1px solid #cbd8da; border-radius:12px; background:#fff; color:#17324d; font:inherit; font-weight:800; cursor:pointer; }
.sor-game-modes button .ico { grid-row:span 2; width:1.35rem;height:1.35rem;color:#168b87; }
.sor-game-modes button small { grid-column:2; font-size:.82rem; font-weight:500; color:#536675; }
.sor-game-modes button.active { border:2px solid #168b87; background:#e4f3f1; }
.sor-game-card { padding:clamp(1rem,2.5vw,1.5rem); border:1px solid #d5dfe1; border-radius:16px; background:#fff; }
.sor-game-progress { display:flex; justify-content:space-between; gap:1rem; color:#465867; font-size:.9rem; font-weight:700; }
.sor-progress-track { height:8px; margin:.65rem 0 1.25rem; overflow:hidden; border-radius:99px; background:#e5ebec; }
.sor-progress-track span { display:block; height:100%; min-width:5px; background:#1fa6a2; transition:width .2s ease; }
.sor-game-wordline { display:flex; flex-wrap:wrap; gap:.65rem; align-items:center; margin:.5rem 0; }
.sor-game-wordline strong { font-size:1.45rem; color:#17324d; }
.sor-game-wordline span { padding:.3rem .6rem; border-radius:999px; background:#f7f4ec; color:#455766; font-size:.9rem; }
.sor-game-question { margin:.8rem 0; color:#17324d; font-size:1.15rem; line-height:1.45; }
.sor-answer-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:.65rem; }
.sor-answer { min-height:48px; padding:.75rem; border:1px solid #cbd5dc; border-radius:10px; color:#243746; background:#fff; font:inherit; text-align:left; cursor:pointer; }
.sor-answer:hover:not(:disabled) { border-color:#1fa6a2; background:#f2faf9; }
.sor-answer.is-correct,.sor-answer.show-correct { border-color:#32856d; background:#e7f4ed; }
.sor-answer.is-wrong { border-color:#b7793c; background:#fff4e5; }
.sor-answer-feedback { display:flex; align-items:center; flex-wrap:wrap; gap:.5rem .75rem; margin-top:1rem; padding:.85rem; border-radius:12px; line-height:1.55; }
.sor-answer-feedback.positive { background:#e8f4ee; color:#24553f; }
.sor-answer-feedback.coaching { background:#fff5e6; color:#664719; }
.sor-answer-feedback .sor-primary-button { margin-left:auto; }
.sor-game-hint,.sor-privacy-note { color:#526675; font-size:.9rem; line-height:1.5; }
.sor-game-complete { display:flex; align-items:center; gap:1rem; padding:1.2rem; border-radius:14px; background:#fff; border:1px solid #d5dfe1; }
.sor-game-complete h3,.sor-game-complete p { margin:.2rem 0; }
.sor-complete-mark { display:grid; place-items:center; flex:0 0 2.75rem;height:2.75rem;border-radius:50%;background:#d9f0ed;color:#126b68; }
.sor-activity-library { display:grid; gap:1rem; }
.sor-activity-cards { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:.8rem; }
.sor-activity-cards button { min-height:170px; display:flex; flex-direction:column; align-items:flex-start; gap:.45rem; padding:1rem; text-align:left; color:#17324d; border:1px solid #d7e0e4; border-radius:14px; background:#fff; font:inherit; cursor:pointer; }
.sor-activity-cards button:hover { border-color:#1fa6a2; box-shadow:0 7px 20px rgb(23 50 77 / 8%); transform:translateY(-2px); }
.sor-activity-icon { display:grid; place-items:center; width:2.25rem;height:2.25rem;border-radius:10px;background:#e4f3f1;color:#157672; }
.sor-activity-cards strong { font-size:1rem; }
.sor-activity-cards small { flex:1; color:#536675; line-height:1.45; }
.sor-activity-cards button > span:last-child { color:#126e6a; font-size:.88rem; font-weight:750; }
.sor-morph-family { display:grid; grid-template-columns:repeat(5,minmax(0,1fr)); gap:.75rem; margin:1rem 0; }
.sor-morph-root,.sor-morph-word { display:flex; flex-direction:column; justify-content:center; min-height:145px; padding:1rem; border:1px solid #d6e0e3; border-radius:14px; background:#fff; }
.sor-morph-root { background:#17324d;color:#fff; }
.sor-morph-root span { font-size:.7rem;letter-spacing:.08em;font-weight:800; }
.sor-morph-root strong { font-size:2rem; }
.sor-morph-root em { color:#c7e5e2; }
.sor-morph-word > strong { color:#167c78; }
.sor-morph-word h4 { margin:.5rem 0 .25rem;font-size:1.2rem;color:#17324d; }
.sor-morph-word p { margin:0;color:#536675;line-height:1.45; }
.sor-cognate-note,.sor-extension-row { padding:1rem;border-radius:12px;background:#f7f4ec;line-height:1.55;color:#354655; }
.sor-extension-row { display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;margin-top:.75rem; }
.sor-container :focus-visible { outline:3px solid #d28b28; outline-offset:3px; }
@media(max-width:900px) { .sor-activity-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.sor-morph-family{grid-template-columns:repeat(2,minmax(0,1fr))}.sor-morph-root{grid-column:1/-1;min-height:auto} }
@media(max-width:640px) { .sor-lesson-heading,.sor-practice-top{flex-direction:column}.sor-lesson-grid,.sor-game-modes,.sor-answer-grid,.sor-activity-cards,.sor-morph-family{grid-template-columns:1fr}.sor-lesson-meta{min-width:0;width:100%}.sor-practice-top .sor-secondary-button{width:100%}.sor-game-progress{font-size:.82rem}.sor-answer-feedback .sor-primary-button{width:100%;margin-left:0}.sor-activity-cards button{min-height:140px} }
@media(prefers-reduced-motion:reduce) { .sor-container *, .sor-container *::before,.sor-container *::after{scroll-behavior:auto!important;transition:none!important;animation:none!important} }
@media print { .sor-nav-tabs,.sor-practice-zone,.sor-activity-library,.sor-evidence-badge{display:none!important}.sor-lesson-step,.sor-lesson-heading{break-inside:avoid;box-shadow:none} }