:root {
  --bg-primary: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #253449;
  --bg-input: #0f172a;
  --border: #334155;
  --border-hover: #475569;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --green: #4ade80;
  --green-bg: #14532d;
  --orange: #f97316;
  --orange-bg: #7c2d12;
  --red: #f87171;
  --red-bg: #7f1d1d;
  --yellow: #fbbf24;
  --yellow-bg: #854d0e;
  --purple: #a78bfa;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---- NAV ---- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}
.nav-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.nav-brand span { color: var(--text-secondary); font-weight: 400; }
.nav-links { display: flex; gap: 0.5rem; }
.nav-link {
  padding: 0.4rem 1rem;
  border-radius: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}
.nav-link:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.nav-link.active { background: var(--accent); color: var(--bg-primary); font-weight: 600; }

/* ---- VIEWS ---- */
.view { display: none; padding: 2rem; max-width: 1200px; margin: 0 auto; }
.view.active { display: block; }

/* ---- PERSONA SELECT ---- */
.page-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 0.25rem; }
.page-subtitle { color: var(--text-secondary); margin-bottom: 2rem; font-size: 0.9rem; }
.persona-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1rem;
}
.persona-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}
.persona-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.persona-name { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.25rem; }
.persona-title { color: var(--text-secondary); font-size: 0.85rem; margin-bottom: 0.75rem; }
.persona-desc { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.5; margin-bottom: 1rem; }
.persona-meta { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.tag {
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.tag-quadrant { background: #1e3a5f; color: var(--accent); }
.tag-difficulty-easy { background: var(--green-bg); color: var(--green); }
.tag-difficulty-medium { background: var(--yellow-bg); color: var(--yellow); }
.tag-difficulty-hard { background: var(--orange-bg); color: var(--orange); }
.tag-difficulty-very-hard { background: var(--red-bg); color: var(--red); }

/* ---- PRACTICE VIEW ---- */
.practice-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1.5rem;
  min-height: calc(100vh - 120px);
}
@media (max-width: 900px) {
  .practice-layout { grid-template-columns: 1fr; }
}

.call-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
}

.call-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.call-lead-name { font-weight: 600; font-size: 1rem; }
.call-lead-title { color: var(--text-secondary); font-size: 0.8rem; }
.call-stats {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}
.call-stat { text-align: center; }
.call-stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.call-stat-label { font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase; }

.call-status {
  padding: 0.6rem 1.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  text-align: center;
}
.call-status.idle { background: var(--bg-primary); color: var(--text-muted); }
.call-status.connecting { background: var(--yellow-bg); color: var(--yellow); }
.call-status.connected { background: var(--green-bg); color: var(--green); }
.call-status.speaking { background: #1e3a5f; color: var(--accent); }
.call-status.error { background: var(--red-bg); color: var(--red); }

.call-transcript {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.5rem;
  min-height: 300px;
  max-height: 500px;
}
.msg { padding: 0.6rem 0; font-size: 0.85rem; line-height: 1.5; }
.msg + .msg { border-top: 1px solid #1e293b; }
.msg-label {
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.15rem;
}
.msg-agent .msg-label { color: var(--green); }
.msg-lead .msg-label { color: var(--orange); }
.msg-system { color: var(--text-muted); font-style: italic; font-size: 0.8rem; }

.call-controls {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 0.75rem;
}

/* Text input fallback */
.text-input-row {
  display: flex;
  gap: 0.5rem;
  padding: 0 1.5rem 1rem;
}
.text-input {
  flex: 1;
  padding: 0.6rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
}
.text-input:focus { border-color: var(--accent); }
.text-input::placeholder { color: var(--text-muted); }

.btn {
  padding: 0.7rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  flex: 1;
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: #2563eb; color: white; }
.btn-primary:hover:not(:disabled) { background: #1d4ed8; }
.btn-danger { background: #dc2626; color: white; }
.btn-danger:hover:not(:disabled) { background: #b91c1c; }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  flex: 0;
  white-space: nowrap;
}
.btn-ghost:hover:not(:disabled) { border-color: var(--text-secondary); color: var(--text-primary); }

/* ---- SCORING SIDEBAR ---- */
.scoring-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.score-total-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
}
.score-total-value {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.25rem;
}
.score-total-label { color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; }

.score-categories {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}
.score-category {
  margin-bottom: 1rem;
}
.score-category:last-child { margin-bottom: 0; }
.score-cat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}
.score-cat-name { font-size: 0.8rem; font-weight: 600; }
.score-cat-value { font-size: 0.8rem; font-weight: 700; color: var(--accent); }
.score-bar-bg {
  height: 6px;
  background: var(--bg-primary);
  border-radius: 3px;
  overflow: hidden;
}
.score-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.6s ease, background-color 0.6s ease;
  width: 0%;
}

.score-techniques {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}
.score-techniques h4 {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}
.technique-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.technique-item.used { color: var(--green); }
.technique-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}
.technique-item.used .technique-dot { background: var(--green); }

/* ---- SCORECARD MODAL ---- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 100;
  justify-content: center;
  align-items: flex-start;
  padding: 2rem;
  overflow-y: auto;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  max-width: 700px;
  width: 100%;
  padding: 2rem;
  position: relative;
  margin-top: 2rem;
}
.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}
.modal h2 { margin-bottom: 1.5rem; }
.scorecard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.scorecard-item {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 1rem;
}
.scorecard-item h4 { font-size: 0.85rem; margin-bottom: 0.25rem; }
.scorecard-item .score { font-size: 1.5rem; font-weight: 800; margin-bottom: 0.5rem; }
.scorecard-item p { font-size: 0.8rem; color: var(--text-secondary); line-height: 1.4; }
.scorecard-section {
  margin-bottom: 1.5rem;
}
.scorecard-section h3 {
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  color: var(--accent);
}
.scorecard-list {
  list-style: none;
  padding: 0;
}
.scorecard-list li {
  padding: 0.4rem 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}
.scorecard-list li::before {
  margin-right: 0.5rem;
  font-size: 0.8rem;
}
.highlight-list li::before { content: '+'; color: var(--green); font-weight: bold; }
.improve-list li::before { content: '>'; color: var(--orange); font-weight: bold; }

.overall-feedback {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 1.25rem;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary);
  border-left: 3px solid var(--accent);
}

/* ---- HISTORY VIEW ---- */
.history-list { display: flex; flex-direction: column; gap: 0.75rem; }
.history-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: all 0.2s;
}
.history-item:hover { border-color: var(--accent); background: var(--bg-card-hover); }
.history-left { display: flex; flex-direction: column; gap: 0.25rem; }
.history-lead { font-weight: 600; }
.history-date { font-size: 0.8rem; color: var(--text-muted); }
.history-right { display: flex; align-items: center; gap: 1.5rem; }
.history-score {
  font-size: 1.5rem;
  font-weight: 800;
}
.history-duration { font-size: 0.8rem; color: var(--text-muted); }
.history-empty {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}

/* ---- SCORE COLORS ---- */
.score-excellent { color: var(--green); }
.score-good { color: var(--accent); }
.score-average { color: var(--yellow); }
.score-poor { color: var(--orange); }
.score-bad { color: var(--red); }

.bar-excellent { background: var(--green); }
.bar-good { background: var(--accent); }
.bar-average { background: var(--yellow); }
.bar-poor { background: var(--orange); }
.bar-bad { background: var(--red); }

/* ---- AUDIO VISUALIZER ---- */
.visualizer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2px;
  height: 32px;
  padding: 0 1.5rem;
}
.visualizer .bar {
  width: 3px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  transition: height 0.1s;
}