/* ─────────────────────────────────────────────
   Voice Deepfake Detector — Main Stylesheet
   ───────────────────────────────────────────── */

:root {
  --brand-dark:   #1e2235;
  --brand-mid:    #2b3058;
  --brand-accent: #4f6ef7;
  --brand-purple: #7c3aed;
  --brand-green:  #16a34a;
  --brand-red:    #dc2626;
  --brand-yellow: #d97706;

  /* Light theme (default) */
  --bg:           #f0f2f8;
  --surface:      #ffffff;
  --surface-alt:  #f8f9fe;
  --border:       #d1d5db;
  --text:         #111827;
  --text-muted:   #6b7280;
  --text-on-dark: #ffffff;

  /* Theme-specific colors */
  --ethics-bg:    #fef3c7;
  --ethics-border:#fcd34d;
  --upload-hover-bg: #f0f4ff;
  --result-real-bg:  #dcfce7;
  --result-fake-bg:  #fee2e2;
  --result-uncertain-bg: #fff7d6;
  --result-error-bg: #fef3c7;
  --result-info-bg:  #eff6ff;
  --demo-notice-bg:  #fffbeb;
  --table-header-bg: var(--brand-dark);
  --table-header-text: #ffffff;
  --overlay-bg:      rgba(255,255,255,.75);
  --code-bg:         #1e1e2e;
  --code-text:       #cdd6f4;

  --radius:       8px;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow:       0 4px 12px rgba(0,0,0,.08);
  --transition:   0.18s ease;
}

/* Dark theme */
[data-theme="dark"] {
  --bg:           #0f1115;
  --surface:      #1a1d26;
  --surface-alt:  #252a36;
  --border:       #374151;
  --text:         #f3f4f6;
  --text-muted:   #9ca3af;
  --text-on-dark: #f3f4f6;

  --ethics-bg:    #451a03;
  --ethics-border:#d97706;
  --upload-hover-bg: #1e3a5f;
  --result-real-bg:  #064e3b;
  --result-fake-bg:  #450a0a;
  --result-uncertain-bg: #4a3b0a;
  --result-error-bg: #451a03;
  --result-info-bg:  #1e3a5f;
  --demo-notice-bg:  #451a03;
  --table-header-bg: #374151;
  --table-header-text: #f3f4f6;
  --overlay-bg:      rgba(0,0,0,.75);
  --code-bg:         #0f1115;
  --code-text:       #e5e7eb;

  --shadow-sm:    0 1px 3px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
  --shadow:       0 4px 12px rgba(0,0,0,.4);
}

/* Dark theme */
[data-theme="dark"] {
  --bg:           #0f1115;
  --surface:      #1a1d26;
  --surface-alt:  #252a36;
  --border:       #374151;
  --text:         #f3f4f6;
  --text-muted:   #9ca3af;
  --text-on-dark: #f3f4f6;

  --ethics-bg:    #451a03;
  --ethics-border:#d97706;
  --upload-hover-bg: #1e3a5f;
  --result-real-bg:  #064e3b;
  --result-fake-bg:  #450a0a;
  --result-uncertain-bg: #4a3b0a;
  --result-error-bg: #451a03;
  --result-info-bg:  #1e3a5f;
  --demo-notice-bg:  #451a03;
  --table-header-bg: #374151;
  --table-header-text: #f3f4f6;
  --overlay-bg:      rgba(0,0,0,.75);
  --code-bg:         #0f1115;
  --code-text:       #e5e7eb;

  --shadow-sm:    0 1px 3px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
  --shadow:       0 4px 12px rgba(0,0,0,.4);
}

/* ── RESET & BASE ───────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--brand-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── ETHICS BANNER ──────────────────────────── */
#ethics-banner {
  background: var(--ethics-bg);
  border-bottom: 2px solid var(--ethics-border);
  color: var(--text);
  padding: .6rem 1.2rem;
  display: flex;
  align-items: center;
  gap: .8rem;
  font-size: .85rem;
  flex-wrap: wrap;
}
#ethics-dismiss {
  margin-left: auto;
  background: var(--brand-yellow);
  color: white;
  border: none;
  border-radius: 4px;
  padding: .3rem .8rem;
  cursor: pointer;
  font-size: .8rem;
  font-weight: 600;
  white-space: nowrap;
}
#ethics-dismiss:hover { opacity: .88; }

/* ── HEADER ─────────────────────────────────── */
header {
  background: linear-gradient(135deg, var(--brand-dark), var(--brand-mid));
  color: var(--text-on-dark);
  padding: 1.5rem 1.2rem 1rem;
}
.header-inner { max-width: 900px; margin: 0 auto; }
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
header h1 {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -.02em;
}
.tagline { color: #a5b4fc; font-size: .85rem; margin-top: .3rem; }

/* ── THEME TOGGLE ───────────────────────────── */
.theme-toggle {
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius);
  padding: .5rem;
  cursor: pointer;
  color: var(--text-on-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition);
}
.theme-toggle:hover {
  background: rgba(255,255,255,.25);
  transform: translateY(-1px);
}
.theme-toggle .icon-sun { display: block; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* ── THEME TOGGLE ───────────────────────────── */
.theme-toggle {
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius);
  padding: .5rem;
  cursor: pointer;
  color: var(--text-on-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition);
}
.theme-toggle:hover {
  background: rgba(255,255,255,.25);
  transform: translateY(-1px);
}
.theme-toggle .icon-sun { display: block; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* ── API STATUS BAR ─────────────────────────── */
#api-status-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: .45rem 1.2rem;
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .82rem;
  color: var(--text-muted);
}
.status-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}
.status-unknown { background: var(--text-muted); }
.status-ok      { background: var(--brand-green); }
.status-error   { background: var(--brand-red); }
.status-demo    { background: var(--brand-yellow); }

#api-config-btn {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .2rem .6rem;
  cursor: pointer;
  font-size: .8rem;
  color: var(--text-muted);
}
#api-config-btn:hover { background: var(--surface-alt); }

/* ── MODAL ──────────────────────────────────── */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
}
.modal[hidden] { display: none; }
.modal-box {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.8rem;
  max-width: 480px; width: 100%;
  box-shadow: var(--shadow);
}
.modal-box h2 { font-size: 1.15rem; margin-bottom: .6rem; }
.modal-box p  { font-size: .88rem; color: var(--text-muted); margin-bottom: 1rem; }
.modal-box label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: .3rem; }
.modal-box input[type="url"] {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .5rem .75rem;
  font-size: .9rem;
  outline: none;
}
.modal-box input[type="url"]:focus { border-color: var(--brand-accent); }
.modal-actions {
  display: flex; gap: .6rem; flex-wrap: wrap; margin-top: 1rem;
}

/* ── MAIN ───────────────────────────────────── */
main {
  max-width: 900px;
  margin: 1.5rem auto;
  width: 100%;
  padding: 0 1rem;
  flex: 1;
}

/* ── TABS ───────────────────────────────────── */
.tab-bar {
  display: flex;
  gap: .25rem;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.tab {
  padding: .55rem 1.1rem;
  border: none;
  background: none;
  cursor: pointer;
  font-size: .9rem;
  color: var(--text-muted);
  border-radius: var(--radius) var(--radius) 0 0;
  transition: background var(--transition), color var(--transition);
}
.tab:hover  { background: var(--surface-alt); color: var(--text); }
.tab.active {
  background: var(--surface);
  color: var(--brand-accent);
  border-bottom: 2px solid var(--brand-accent);
  font-weight: 600;
}

/* ── TAB PANELS ─────────────────────────────── */
.tab-content {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.8rem;
  box-shadow: var(--shadow-sm);
}
.tab-content h2 { font-size: 1.25rem; margin-bottom: .75rem; color: var(--brand-dark); }
.tab-content h3 { font-size: 1rem; margin: 1.2rem 0 .4rem; color: var(--brand-dark); }
.hint { font-size: .88rem; color: var(--text-muted); margin-bottom: 1.2rem; }

/* ── UPLOAD AREA ────────────────────────────── */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  margin-bottom: 1rem;
}
.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--brand-accent);
  background: var(--upload-hover-bg);
}
.upload-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  cursor: pointer;
  font-size: .9rem;
  color: var(--text-muted);
}
.upload-label.has-file { color: var(--brand-green); }

/* ── AUDIO PREVIEW ──────────────────────────── */
.audio-preview {
  margin-bottom: 1rem;
}
.audio-preview audio {
  width: 100%;
  border-radius: var(--radius);
}

/* ── TEXTAREA ───────────────────────────────── */
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .6rem .75rem;
  font-size: .9rem;
  resize: vertical;
  outline: none;
  font-family: inherit;
}
textarea:focus { border-color: var(--brand-accent); }

/* ── FORMAT NOTE ────────────────────────────── */
.format-note {
  font-size: .8rem;
  color: var(--text-muted);
  background: var(--surface-alt);
  border-left: 3px solid var(--border);
  padding: .5rem .75rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 1rem;
}

/* ── BUTTONS ────────────────────────────────── */
.btn-primary, .btn-secondary, .btn-ghost, .btn-purple {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1.2rem;
  border: none;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}
.btn-primary  { background: var(--brand-accent);  color: white; }
.btn-purple   { background: var(--brand-purple);  color: white; }
.btn-secondary{ background: var(--surface-alt);   color: var(--text); border: 1px solid var(--border); }
.btn-ghost    { background: none;                  color: var(--text-muted); }
.btn-primary:hover, .btn-purple:hover { opacity: .88; transform: translateY(-1px); }
.btn-secondary:hover { background: var(--border); }
.btn-ghost:hover { background: var(--surface-alt); }
button:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }

/* ── RESULT BOX ─────────────────────────────── */
.result-box {
  margin-top: 1.2rem;
  padding: 1.1rem 1.3rem;
  border-radius: var(--radius);
  font-size: .95rem;
  animation: fadeIn .25s ease;
}
.result-real { background: var(--result-real-bg); border-left: 4px solid var(--brand-green); }
.result-fake { background: var(--result-fake-bg); border-left: 4px solid var(--brand-red);   }
.result-uncertain { background: var(--result-uncertain-bg); border-left: 4px solid var(--brand-yellow); }
.result-error{ background: var(--result-error-bg); border-left: 4px solid var(--brand-yellow); }
.result-info { background: var(--result-info-bg); border-left: 4px solid var(--brand-accent); }

.result-label { font-size: 1.3rem; font-weight: 700; margin-bottom: .4rem; }
.result-confidence { font-size: .85rem; color: var(--text-muted); }
.result-meta { font-size: .8rem; color: var(--text-muted); margin-top: .5rem; }

/* ── AUDIO OUTPUT ───────────────────────────── */
.generated-audio-box {
  margin-top: 1rem;
}
.generated-audio-box audio { width: 100%; }

/* ── DEMO MODE NOTICE ───────────────────────── */
.demo-mode-notice {
  background: var(--demo-notice-bg);
  border: 1px solid var(--ethics-border);
  color: var(--text);
  border-radius: var(--radius);
  padding: .75rem 1rem;
  font-size: .85rem;
  margin-bottom: 1.2rem;
}

/* ── ETHICS WARNING ─────────────────────────── */
.ethics-warning {
  background: var(--ethics-bg);
  border: 1px solid var(--ethics-border);
  color: var(--text);
  border-radius: var(--radius);
  padding: .75rem 1rem;
  font-size: .85rem;
  margin-bottom: 1.2rem;
}

/* ── ENGINE INFO ────────────────────────────── */
.engine-info {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .5rem .9rem;
  font-size: .82rem;
  margin-bottom: 1rem;
}

/* ── CONSENT CHECKBOX ───────────────────────── */
.consent-check {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  margin: .8rem 0 1rem;
  font-size: .85rem;
}
.consent-check input { margin-top: .2rem; flex-shrink: 0; }

/* ── CODE BLOCK ─────────────────────────────── */
.code-block {
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: var(--radius);
  padding: 1rem;
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: .82rem;
  overflow-x: auto;
  white-space: pre;
  margin-top: .8rem;
}

/* ── METRICS TABLE ──────────────────────────── */
.metrics-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .88rem;
  margin-top: 1rem;
}
.metrics-table th {
  background: var(--table-header-bg);
  color: var(--table-header-text);
  padding: .6rem .9rem;
  text-align: left;
  font-weight: 600;
}
.metrics-table td {
  padding: .5rem .9rem;
  border-bottom: 1px solid var(--border);
}
.metrics-table tr:nth-child(even) { background: var(--surface-alt); }
.metrics-table tr.best-row { background: #dcfce7 !important; font-weight: 600; }
.metric-badge {
  display: inline-block;
  padding: .15rem .45rem;
  border-radius: 12px;
  font-size: .75rem;
  font-weight: 700;
}
.badge-green  { background: #bbf7d0; color: #15803d; }
.badge-yellow { background: #fef9c3; color: #854d0e; }
.badge-red    { background: #fee2e2; color: #991b1b; }

/* ── DIAGRAM ────────────────────────────────── */
.mermaid-container {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  overflow-x: auto;
  margin-top: .8rem;
}
.diagram-pre {
  font-size: .78rem;
  color: var(--text-muted);
  font-family: monospace;
  white-space: pre;
}

/* ── LOADING OVERLAY ────────────────────────── */
.overlay {
  position: fixed; inset: 0;
  background: var(--overlay-bg);
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}
.overlay.hidden { display: none; }
.spinner {
  width: 44px; height: 44px;
  border: 4px solid var(--border);
  border-top-color: var(--brand-accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.loading-msg { font-size: .9rem; color: var(--text-muted); }
.loading-msg.loading-msg { display: block; }
#results-loading { font-size: .9rem; color: var(--text-muted); }

/* ── CHAR COUNT ─────────────────────────────── */
#char-count { font-size: .78rem; color: var(--text-muted); display: block; margin-top: .2rem; }

/* ── FOOTER ─────────────────────────────────── */
footer {
  text-align: center;
  padding: 1rem;
  font-size: .78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: var(--surface);
  margin-top: auto;
}

/* ── RECORDING CONTROLS ─────────────────────── */
.recording-controls { margin-bottom: 1rem; }
.recording-row {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
}
.btn-record, .btn-stop {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1.2rem;
  border: none;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}
.btn-record {
  background: var(--brand-red);
  color: white;
}
.btn-stop {
  background: var(--brand-dark);
  color: white;
}
.btn-record:hover, .btn-stop:hover { opacity: .88; transform: translateY(-1px); }
.btn-record:disabled, .btn-stop:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }
.record-icon, .stop-icon {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: white;
}
.stop-icon {
  border-radius: 2px;
}
.recording-status {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .85rem;
  color: var(--brand-red);
  font-weight: 600;
}
.recording-dot {
  width: 10px;
  height: 10px;
  background: var(--brand-red);
  border-radius: 50%;
  animation: pulse 1s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}
.recording-timer {
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  background: var(--bg);
  padding: .25rem .6rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.recording-hint {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: .4rem;
}

/* ── UTILITIES ──────────────────────────────── */
.hidden { display: none !important; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; } }
@keyframes spin   { to { transform: rotate(360deg); } }

/* ── HISTORY SECTION ─────────────────────────── */
.history-section {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: .75rem;
}

.history-header h3 {
  font-size: 1rem;
  color: var(--brand-dark);
  margin: 0;
}

.btn-sm {
  padding: .3rem .8rem;
  font-size: .8rem;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.history-empty {
  font-size: .85rem;
  color: var(--text-muted);
  text-align: center;
  padding: 1rem;
  font-style: italic;
}

.history-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .75rem 1rem;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.history-item:hover {
  background: var(--bg);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.history-timestamp {
  font-size: .75rem;
  color: var(--text-muted);
  white-space: nowrap;
  font-family: 'Cascadia Code', 'Fira Code', monospace;
}

.history-filename {
  flex: 1;
  font-size: .85rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.history-badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .25rem .6rem;
  border-radius: 12px;
  font-size: .75rem;
  font-weight: 600;
  white-space: nowrap;
}

.history-badge.real {
  background: var(--result-real-bg);
  color: var(--brand-green);
}

.history-badge.fake {
  background: var(--result-fake-bg);
  color: var(--brand-red);
}

.history-badge.uncertain {
  background: var(--result-uncertain-bg);
  color: var(--brand-yellow);
}

.history-confidence {
  font-size: .75rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.history-model {
  font-size: .7rem;
  color: var(--text-muted);
  background: var(--surface);
  padding: .15rem .4rem;
  border-radius: 4px;
  white-space: nowrap;
}

/* ── CONFUSION MATRIX ───────────────────────── */
.confusion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.confusion-matrix {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow-sm);
}

.confusion-matrix h4 {
  margin: 0 0 0.75rem 0;
  font-size: 1rem;
  color: var(--text);
  text-align: center;
}

.confusion-matrix h4 .best-badge {
  color: var(--brand-green);
  font-size: 0.85rem;
}

.confusion-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.confusion-table th,
.confusion-table td {
  padding: 0.6rem;
  text-align: center;
  border: 1px solid var(--border);
}

.confusion-table th {
  background: var(--surface-alt);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.confusion-table .label-cell {
  background: var(--surface-alt);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.confusion-table .tp {
  background: rgba(22, 163, 74, 0.15);
  color: var(--brand-green);
  font-weight: 600;
}

.confusion-table .tn {
  background: rgba(22, 163, 74, 0.15);
  color: var(--brand-green);
  font-weight: 600;
}

.confusion-table .fp {
  background: rgba(220, 38, 38, 0.15);
  color: var(--brand-red);
  font-weight: 600;
}

.confusion-table .fn {
  background: rgba(220, 38, 38, 0.15);
  color: var(--brand-red);
  font-weight: 600;
}

.confusion-table td.heat-cell {
  color: var(--text);
  font-weight: 700;
}

.confusion-table td .cm-count {
  display: block;
  font-size: .95rem;
  line-height: 1.1;
}

.confusion-table td .cm-rate {
  display: block;
  font-size: .72rem;
  line-height: 1.1;
  color: var(--text-muted);
  margin-top: .15rem;
}

.confusion-legend {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.confusion-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.confusion-legend .dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

.confusion-legend .dot.correct {
  background: rgba(22, 163, 74, 0.3);
}

.confusion-legend .dot.incorrect {
  background: rgba(220, 38, 38, 0.3);
}

.heat-scale {
  margin-top: .55rem;
  display: flex;
  align-items: center;
  gap: .45rem;
  font-size: .72rem;
  color: var(--text-muted);
}

.heat-scale-bar {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(22, 163, 74, 0.15), rgba(22, 163, 74, 0.85));
}

/* ── RESPONSIVE ─────────────────────────────── */
@media (max-width: 600px) {
  header h1 { font-size: 1.1rem; }
  .tab-bar  { gap: 0; }
  .tab      { padding: .45rem .7rem; font-size: .8rem; }
  .tab-content { padding: 1.2rem; }
  .modal-box { padding: 1.2rem; }
  .history-item { flex-wrap: wrap; }
  .history-filename { width: 100%; order: -1; }
  .confusion-grid { grid-template-columns: 1fr; }
}