:root {
  --bg: #070a13;
  --card-bg: rgba(18, 25, 45, 0.7);
  --border: rgba(65, 82, 125, 0.35);
  --border-focus: #5d7aff;
  --text-main: #f0f4fc;
  --text-muted: #8e9bb5;
  --accent-cyan: #00d2ff;
  --accent-blue: #3a7bd5;
  --accent-purple: #7928ca;
  --accent-green: #10b981;
  --accent-crimson: #ff3366;
  --accent-amber: #f59e0b;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  min-height: 100vh;
  background: radial-gradient(circle at 50% 15%, #151d38 0%, #070a13 70%);
  color: var(--text-main);
  font-family: var(--font-body);
  display: flex;
  justify-content: center;
  padding: 24px 16px;
  line-height: 1.5;
}

.app {
  width: min(840px, 100%);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 800;
  letter-spacing: 4px;
  background: linear-gradient(135deg, #00d2ff, #7928ca);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(0, 210, 255, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 210, 255, 0.3);
}

.tagline {
  font-size: 14px;
  color: var(--text-muted);
}

/* Hero & Voice Orb */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px 0 10px;
}

.orb {
  position: relative;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 35% 35%, #1e2a4a, #0d1326);
  border: 2px solid rgba(100, 130, 200, 0.25);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.6);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.orb span {
  font-size: 44px;
  z-index: 2;
  transition: transform 0.2s;
}

.orb-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px dashed rgba(255, 255, 255, 0.1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

/* Orb State Variations */
.orb.idle {
  border-color: rgba(65, 82, 125, 0.4);
}

.orb.listening {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 45px rgba(0, 210, 255, 0.4), inset 0 0 20px rgba(0, 210, 255, 0.2);
  animation: pulse-cyan 1.6s infinite ease-in-out;
}

.orb.listening .orb-ring {
  opacity: 0.8;
  border-color: var(--accent-cyan);
  animation: spin 8s linear infinite;
}

.orb.thinking {
  border-color: var(--accent-purple);
  box-shadow: 0 0 45px rgba(121, 40, 202, 0.45);
  animation: pulse-purple 1.3s infinite ease-in-out;
}

.orb.speaking {
  border-color: var(--accent-green);
  box-shadow: 0 0 50px rgba(16, 185, 129, 0.45), inset 0 0 20px rgba(16, 185, 129, 0.25);
  animation: pulse-green 0.9s infinite ease-in-out;
}

.orb.interrupted {
  border-color: var(--accent-crimson) !important;
  box-shadow: 0 0 60px rgba(255, 51, 102, 0.7), inset 0 0 25px rgba(255, 51, 102, 0.4) !important;
  animation: flash-crimson 0.6s ease-out;
}

@keyframes pulse-cyan {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

@keyframes pulse-purple {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes pulse-green {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

@keyframes flash-crimson {
  0% { transform: scale(1.12); }
  100% { transform: scale(1); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.state {
  margin-top: 18px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-main);
  transition: color 0.2s;
}

.hint {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
  min-height: 22px;
}

/* Controls */
.controls {
  display: flex;
  gap: 14px;
  margin-top: 18px;
}

.btn {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, #f0f4fc, #d5deed);
  color: #0b1020;
  box-shadow: 0 4px 15px rgba(240, 244, 252, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(240, 244, 252, 0.3);
}

.btn-primary.active {
  background: linear-gradient(135deg, #00d2ff, #0088cc);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-danger {
  background: rgba(255, 51, 102, 0.15);
  color: #ff557f;
  border: 1px solid rgba(255, 51, 102, 0.4);
}

.btn-danger:hover {
  background: rgba(255, 51, 102, 0.3);
  transform: translateY(-2px);
}

/* Metrics Card */
.metrics-card {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 20px;
  padding: 10px 20px;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 13px;
}

.metric {
  display: flex;
  align-items: center;
  gap: 8px;
}

.metric-label {
  color: var(--text-muted);
}

.metric-val {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--accent-cyan);
}

.metric-divider {
  width: 1px;
  height: 18px;
  background: var(--border);
}

/* Simulation Panel */
.sim-panel {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 22px;
}

.sim-header {
  margin-bottom: 14px;
}

.sim-header h3 {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
}

.sim-subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

.sim-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 600px) {
  .sim-buttons {
    grid-template-columns: 1fr;
  }
}

.btn-sim {
  flex-direction: column;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(27, 36, 64, 0.6);
  border: 1px solid var(--border);
  color: var(--text-main);
  text-align: left;
}

.btn-sim:hover {
  border-color: var(--accent-blue);
  background: rgba(35, 48, 85, 0.8);
  transform: translateY(-1px);
}

.btn-sim-interrupt:hover {
  border-color: var(--accent-crimson);
  background: rgba(60, 20, 35, 0.8);
}

.step-badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(58, 123, 213, 0.25);
  color: var(--accent-cyan);
  margin-bottom: 6px;
}

.step-interrupt {
  background: rgba(255, 51, 102, 0.25);
  color: var(--accent-crimson);
}

/* Input Panel */
.input-panel {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px 16px;
}

.input-form {
  display: flex;
  gap: 10px;
}

.input-form input {
  flex: 1;
  background: rgba(10, 15, 28, 0.6);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.input-form input:focus {
  border-color: var(--border-focus);
}

.btn-submit {
  background: var(--accent-blue);
  color: #fff;
  border-radius: 10px;
  padding: 0 20px;
}

.btn-submit:hover {
  background: #4b8df0;
}

/* Transcript */
.transcript-section {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.transcript-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.transcript-header h4 {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
}

.btn-clear {
  background: transparent;
  border: 0;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
}

.btn-clear:hover {
  color: var(--text-main);
}

.transcript {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 320px;
  overflow-y: auto;
  padding-right: 4px;
}

.msg {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.5;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.msg-header {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  font-weight: 700;
  opacity: 0.75;
  margin-bottom: 2px;
}

.msg.user {
  align-self: flex-end;
  background: linear-gradient(135deg, #1f315a, #1a2745);
  border: 1px solid rgba(75, 110, 180, 0.35);
  max-width: 82%;
}

.msg.vox {
  align-self: flex-start;
  background: linear-gradient(135deg, #131d36, #0e1526);
  border: 1px solid rgba(60, 80, 125, 0.35);
  max-width: 82%;
}

.msg.interrupted-tag {
  border-color: rgba(255, 51, 102, 0.4);
  background: rgba(45, 15, 25, 0.6);
}

.msg.system {
  align-self: center;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
  max-width: 90%;
}

.error {
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(255, 51, 102, 0.15);
  border: 1px solid rgba(255, 51, 102, 0.35);
  color: #ff99b0;
  font-size: 13px;
}

/* VOX experience refresh */
:root {
  --bg-deep: #050711;
  --surface: rgba(17, 24, 44, 0.78);
  --surface-strong: rgba(24, 34, 61, 0.9);
  --line-soft: rgba(130, 153, 208, 0.2);
  --accent-lime: #c7ff5e;
}

body {
  background:
    radial-gradient(circle at 12% 0%, rgba(0, 210, 255, 0.12), transparent 34%),
    radial-gradient(circle at 88% 14%, rgba(121, 40, 202, 0.14), transparent 30%),
    linear-gradient(145deg, var(--bg-deep), #0b1020 52%, #070a13);
  padding: 20px 18px 42px;
}

.app {
  width: min(1080px, 100%);
  gap: 16px;
}

header {
  padding: 4px 2px 18px;
  border-bottom-color: var(--line-soft);
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.status-pill,
.memory-count {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--text-muted);
  background: rgba(8, 13, 28, 0.55);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .02em;
  white-space: nowrap;
}

.status-pill.online { color: #8cf0c4; border-color: rgba(16, 185, 129, .35); }
.status-pill.offline { color: #ff9ab2; border-color: rgba(255, 51, 102, .35); }
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-amber);
  box-shadow: 0 0 10px currentColor;
}
.status-pill.online .status-dot { background: var(--accent-green); }
.status-pill.offline .status-dot { background: var(--accent-crimson); }

.header-action {
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  padding: 7px 10px;
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  font: 600 11px var(--font-body);
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}
.header-action:hover { color: var(--text-main); border-color: var(--accent-cyan); background: rgba(0, 210, 255, .08); }

.hero {
  position: relative;
  overflow: hidden;
  padding: 32px 24px 24px;
  border: 1px solid var(--line-soft);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(16, 25, 50, .74), rgba(8, 12, 26, .62));
  box-shadow: 0 22px 70px rgba(0, 0, 0, .24);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(115deg, rgba(0, 210, 255, .05), transparent 32%, rgba(121, 40, 202, .06));
}
.hero > * { position: relative; }

.orb { width: 132px; height: 132px; }
.state { margin-top: 16px; font-size: 18px; }
.hint { max-width: 580px; }
.metrics-card { margin-top: 18px; background: rgba(5, 8, 20, .42); }

.memory-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid rgba(199, 255, 94, .2);
  border-radius: 15px;
  background: linear-gradient(90deg, rgba(199, 255, 94, .08), rgba(0, 210, 255, .05));
}
.memory-icon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 9px;
  color: var(--accent-lime);
  background: rgba(199, 255, 94, .1);
  font-size: 22px;
}
.memory-copy { display: flex; flex: 1; flex-direction: column; gap: 2px; min-width: 0; }
.memory-copy strong { color: var(--text-main); font: 700 13px var(--font-heading); }
.memory-copy span { color: var(--text-muted); font-size: 11px; }
.memory-count { color: var(--accent-lime); border-color: rgba(199, 255, 94, .25); }

.voice-settings,
.sim-panel,
.evaluation-panel,
.input-panel,
.transcript-section {
  border-color: var(--line-soft);
  background: linear-gradient(145deg, rgba(18, 26, 49, .78), rgba(10, 15, 30, .78));
  box-shadow: 0 12px 32px rgba(0, 0, 0, .12);
}

.voice-settings { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.voice-settings label { color: var(--text-main); font: 700 12px var(--font-heading); }
.voice-settings select { min-width: 148px; }

.sim-panel, .evaluation-panel { padding: 20px; }
.sim-header { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; }
.btn-sim { min-height: 76px; }

.input-panel { position: sticky; bottom: 14px; z-index: 4; padding: 10px; box-shadow: 0 12px 36px rgba(0, 0, 0, .34); }
.input-form input { background: rgba(5, 9, 20, .76); }
.input-form input::placeholder { color: #71809e; }
.btn-submit { min-width: 84px; justify-content: center; }

.transcript-section { min-height: 320px; padding: 20px; }
.transcript-header h4 { font-size: 16px; }
.transcript { max-height: 410px; padding: 4px 6px 8px 0; }
.msg { box-shadow: 0 8px 18px rgba(0, 0, 0, .12); }
.msg.user { border-color: rgba(0, 210, 255, .26); }
.msg.vox { border-color: rgba(199, 255, 94, .2); }

button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent-lime);
  outline-offset: 3px;
}

@media (max-width: 680px) {
  body { padding: 12px 10px 28px; }
  header { align-items: flex-start; gap: 14px; }
  .header-actions { justify-content: flex-start; }
  .tagline { display: none; }
  .hero { padding: 24px 14px 20px; border-radius: 19px; }
  .controls { width: 100%; flex-direction: column; max-width: 270px; }
  .controls .btn { justify-content: center; }
  .metrics-card { width: 100%; justify-content: center; gap: 10px; padding: 10px; }
  .metric { flex-direction: column; gap: 0; text-align: center; }
  .memory-strip { align-items: flex-start; }
  .memory-count { margin-left: auto; }
  .sim-header { align-items: flex-start; flex-direction: column; gap: 4px; }
  .input-form { gap: 7px; }
  .input-form input { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}

/* Bright multi-color theme */
:root {
  --bg: #f7fbf9;
  --card-bg: rgba(255, 255, 255, 0.84);
  --border: #d7e9e3;
  --border-focus: #59a9d8;
  --text-main: #18324a;
  --text-muted: #60798a;
  --accent-cyan: #42a9cf;
  --accent-blue: #6886e8;
  --accent-purple: #b17adf;
  --accent-green: #48b98a;
  --accent-crimson: #ed7893;
  --accent-amber: #dba64d;
  --bg-deep: #f1f9f6;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --line-soft: #d7e9e3;
  --accent-lime: #79bd72;
}

body {
  color: var(--text-main);
  background:
    radial-gradient(circle at 8% 0%, rgba(171, 235, 202, .62), transparent 32%),
    radial-gradient(circle at 92% 3%, rgba(180, 222, 255, .66), transparent 30%),
    radial-gradient(circle at 84% 88%, rgba(255, 194, 211, .46), transparent 27%),
    linear-gradient(135deg, #f9fdfb 0%, #f2f8ff 48%, #fff7fa 100%);
}

.brand {
  background: linear-gradient(135deg, #278fbd, #74b96f 42%, #dd78a3 78%, #7786dc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.badge {
  color: #3385a7;
  background: #e3f5f4;
  border-color: #b9e2dc;
}
.tagline { color: #668091; }

.hero {
  border-color: #d4e7ee;
  background:
    linear-gradient(140deg, rgba(227, 250, 241, .88), rgba(233, 245, 255, .9) 48%, rgba(255, 238, 245, .88));
  box-shadow: 0 22px 58px rgba(77, 125, 151, .14);
}
.hero::before { background: linear-gradient(115deg, rgba(101, 205, 176, .12), transparent 34%, rgba(238, 130, 165, .12)); }
.orb {
  background: radial-gradient(circle at 35% 30%, #ffffff, #dff1f1 48%, #e3e9ff);
  border-color: #b9d7e4;
  box-shadow: 0 12px 30px rgba(72, 132, 162, .16);
}
.orb.idle { border-color: #b9d7e4; }
.orb.listening { border-color: #4fbfa1; box-shadow: 0 0 45px rgba(75, 191, 161, .34), inset 0 0 20px rgba(75, 191, 161, .16); }
.orb.thinking { border-color: #a979df; box-shadow: 0 0 45px rgba(169, 121, 223, .3); }
.orb.speaking { border-color: #5aaeda; box-shadow: 0 0 50px rgba(90, 174, 218, .34), inset 0 0 20px rgba(90, 174, 218, .16); }
.orb.interrupted { border-color: #ed7893 !important; box-shadow: 0 0 60px rgba(237, 120, 147, .46), inset 0 0 25px rgba(237, 120, 147, .22) !important; }
.state { color: #23445c; }
.hint { color: #668091; }

.btn-primary {
  color: #174056;
  background: linear-gradient(135deg, #c8f2df, #bfe8fa);
  border-color: #a8dcca;
  box-shadow: 0 5px 16px rgba(89, 166, 177, .18);
}
.btn-primary:hover { box-shadow: 0 7px 22px rgba(89, 166, 177, .26); }
.btn-primary.active { color: #164056; background: linear-gradient(135deg, #9fe3c8, #a9d8f5); border-color: #8cc7d5; }
.btn-danger { color: #b84f6b; background: #fff0f3; border-color: #f1b7c6; }
.btn-danger:hover { background: #ffe2e9; }

.metrics-card,
.voice-settings,
.sim-panel,
.evaluation-panel,
.input-panel,
.transcript-section {
  border-color: #d6e8e4;
  background: linear-gradient(145deg, rgba(255, 255, 255, .9), rgba(242, 250, 255, .84));
  box-shadow: 0 12px 32px rgba(79, 119, 142, .1);
}
.metrics-card { color: #557184; background: rgba(255, 255, 255, .68); }
.metric-val { color: #3892b7; }
.metric-divider { background: #d4e6e6; }

.memory-strip { border-color: #cbe6d7; background: linear-gradient(90deg, #ecfbf1, #edf8ff 58%, #fff1f5); }
.memory-icon { color: #4caa76; background: #dcf5e7; }
.memory-count { color: #4c9c6d; border-color: #b8dec5; background: #f1fbf4; }

.sim-subtitle { color: #718897; }
.btn-sim { color: #23445c; background: linear-gradient(135deg, #ffffff, #f3faff); border-color: #d1e4e7; }
.btn-sim:hover { border-color: #78b8d4; background: #f0fbff; }
.btn-sim-interrupt:hover { border-color: #ee9bb0; background: #fff3f6; }
.step-badge { color: #3b88ae; background: #e0f2fa; }
.step-interrupt { color: #c15a76; background: #ffe6ed; }

.input-form input { color: #18324a; background: rgba(255, 255, 255, .9); border-color: #cfe3e4; }
.input-form input::placeholder { color: #8aa0ab; }
.input-form input:focus { border-color: #64acd0; box-shadow: 0 0 0 3px rgba(100, 172, 208, .14); }
.btn-submit { color: #fff; background: linear-gradient(135deg, #5b9ed0, #7185dc); }
.btn-submit:hover { background: linear-gradient(135deg, #4d91c5, #6577d1); }

.transcript-section { background: linear-gradient(145deg, rgba(255,255,255,.94), rgba(248,252,255,.9)); }
.msg.user { color: #21455d; background: linear-gradient(135deg, #e1f5f6, #e8f0ff); border-color: #bcdde4; }
.msg.vox { color: #264755; background: linear-gradient(135deg, #effbef, #fff4f7); border-color: #cce6d8; }
.msg.system { color: #6c8390; background: #f1f7f7; }
.btn-clear, .header-action { color: #6d8492; }
.btn-clear:hover, .header-action:hover { color: #2a617b; border-color: #8cc6d8; background: #effaff; }
.status-pill { color: #6c8390; background: rgba(255,255,255,.74); border-color: #d0e2e4; }
.status-pill.online { color: #38865e; border-color: #b7dfc5; background: #effbf2; }
.status-pill.offline { color: #c35b73; border-color: #efbdc9; background: #fff2f5; }
.status-pill.online .status-dot { background: #48b98a; }
.status-pill.offline .status-dot { background: #ed7893; }
.error { color: #b64d69; background: #fff0f3; border-color: #efb2c2; }

button:focus-visible, input:focus-visible, select:focus-visible { outline-color: #79bd72; }

/* Color-coded workspace panels */
.sim-panel {
  background: linear-gradient(135deg, #eef8ff 0%, #f8fcff 62%, #f1f5ff 100%);
  border-color: #c9e1ed;
}
.evaluation-panel {
  background: linear-gradient(135deg, #fff2f6 0%, #fffaf5 58%, #f7f1ff 100%);
  border-color: #efd4df;
}
.input-panel {
  background: linear-gradient(135deg, #edfbf5 0%, #f4fbff 100%);
  border-color: #c8e6d9;
}
.transcript-section {
  background: linear-gradient(135deg, #f6f1ff 0%, #fff8fb 52%, #f1fbfa 100%);
  border-color: #ded4ec;
}

/* Elegant soft-dark theme: deep blue-gray surfaces instead of pure black. */
html[data-theme="dark"] {
  --bg: #111827;
  --card-bg: rgba(30, 41, 59, .78);
  --border: rgba(148, 163, 184, .22);
  --border-focus: #67c9df;
  --text-main: #edf4f7;
  --text-muted: #a7b7c9;
  --line-soft: rgba(148, 163, 184, .24);
  --accent-lime: #c7e88b;
}

html[data-theme="dark"] body {
  background:
    radial-gradient(circle at 10% 0%, rgba(29, 139, 161, .24), transparent 34%),
    radial-gradient(circle at 90% 4%, rgba(117, 83, 164, .22), transparent 32%),
    linear-gradient(145deg, #111827 0%, #172236 52%, #1c2434 100%);
}
html[data-theme="dark"] .brand {
  background: linear-gradient(135deg, #70d4e4, #b6dc82 48%, #d39cc7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
html[data-theme="dark"] .badge { color: #9ee4e8; background: rgba(71, 178, 193, .14); border-color: rgba(111, 213, 222, .3); }
html[data-theme="dark"] .tagline, html[data-theme="dark"] .hint { color: #a7b7c9; }
html[data-theme="dark"] .hero {
  border-color: rgba(148, 163, 184, .24);
  background: linear-gradient(140deg, rgba(39, 56, 82, .92), rgba(28, 40, 61, .9) 52%, rgba(49, 39, 65, .82));
  box-shadow: 0 22px 70px rgba(4, 10, 24, .3);
}
html[data-theme="dark"] .orb { background: radial-gradient(circle at 35% 30%, #31445f, #22324a 52%, #2d3150); border-color: #6b94aa; }
html[data-theme="dark"] .state { color: #f0f7fa; }
html[data-theme="dark"] .metrics-card,
html[data-theme="dark"] .voice-settings,
html[data-theme="dark"] .sim-panel,
html[data-theme="dark"] .evaluation-panel,
html[data-theme="dark"] .input-panel,
html[data-theme="dark"] .transcript-section {
  background: linear-gradient(145deg, rgba(35, 49, 73, .9), rgba(27, 39, 59, .88));
  border-color: rgba(148, 163, 184, .24);
  box-shadow: 0 12px 32px rgba(4, 10, 24, .2);
}
html[data-theme="dark"] .memory-strip { background: linear-gradient(90deg, rgba(122, 161, 105, .14), rgba(54, 135, 153, .12)); border-color: rgba(164, 209, 132, .25); }
html[data-theme="dark"] .memory-count { color: #c7e88b; background: rgba(160, 203, 125, .12); border-color: rgba(160, 203, 125, .28); }
html[data-theme="dark"] .input-form input { color: #edf4f7; background: rgba(16, 25, 41, .72); border-color: rgba(148, 163, 184, .3); }
html[data-theme="dark"] .input-form input::placeholder { color: #8fa2b8; }
html[data-theme="dark"] .btn-sim { color: #e4eef3; background: linear-gradient(135deg, #2a3a56, #25324b); border-color: rgba(148, 163, 184, .25); }
html[data-theme="dark"] .btn-sim:hover { background: #304462; border-color: #67c9df; }
html[data-theme="dark"] .transcript-section { background: linear-gradient(135deg, rgba(35, 43, 68, .94), rgba(32, 45, 60, .92)); }
html[data-theme="dark"] .msg.user { color: #e5f7fb; background: linear-gradient(135deg, #294866, #30415f); border-color: rgba(103, 201, 223, .35); }
html[data-theme="dark"] .msg.vox { color: #e9f4ed; background: linear-gradient(135deg, #304b49, #3b3d58); border-color: rgba(199, 232, 139, .28); }
html[data-theme="dark"] .msg.system { color: #a7b7c9; background: rgba(255, 255, 255, .06); }
html[data-theme="dark"] .btn-clear, html[data-theme="dark"] .header-action { color: #a7b7c9; }
html[data-theme="dark"] .btn-clear:hover, html[data-theme="dark"] .header-action:hover { color: #edf4f7; background: rgba(103, 201, 223, .1); border-color: #67c9df; }