frontend/src/App.css

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

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
}

.app-layout {
  display: flex;
  height: 100vh;
}

.sidebar {
  width: 320px;
  background: var(--sidebar-bg);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  overflow-y: auto;
  border-right: 1px solid var(--border);
}

.app-title {
  font-family: var(--heading);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.3px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.app-logo {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
  text-transform: none;
  letter-spacing: normal;
}

.toggle-label input[type="checkbox"] {
  accent-color: var(--accent);
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.persona-selector {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: normal;
  text-transform: none;
}

select,
input[type="text"] {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 9px 12px;
  font-size: 14px;
  font-family: var(--sans);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

select:focus,
input[type="text"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

select:hover,
input[type="text"]:hover {
  border-color: var(--text-faint);
}

.webcam-container {
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
}

.webcam-placeholder,
.webcam-error {
  padding: 24px;
  text-align: center;
  color: var(--text-faint);
  font-size: 13px;
}

.webcam-error {
  color: var(--fail);
}

.sensing-off {
  color: var(--text-faint);
  font-size: 13px;
}

.sensing-status {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.sensing-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

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

.sensing-value {
  color: var(--text);
  font-weight: 500;
}

.gaze-zone-map {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin: 2px 0 4px;
}

.gaze-zone-row {
  display: flex;
  gap: 3px;
}

.gaze-zone {
  flex: 1;
  padding: 4px 6px;
  font-size: 11px;
  text-align: center;
  border-radius: 5px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--surface);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.gaze-zone--active {
  background: var(--accent, #4f8ef7);
  color: #fff;
  border-color: var(--accent, #4f8ef7);
  font-weight: 600;
}

.section-title {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 6px;
  font-weight: 600;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  padding: 2px 0;
  color: var(--text);
}

.metric-row.sub {
  padding-left: 12px;
  font-size: 11px;
  color: var(--text-muted);
}

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

.metric-value {
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
}

.metric-value.pass {
  color: var(--pass);
}

.metric-value.fail {
  color: var(--fail);
}

.no-metrics {
  color: var(--text-faint);
  font-size: 13px;
  font-style: italic;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.chat-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.chat-header {
  padding: 18px 28px;
  font-family: var(--heading);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.2px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chat-bubble {
  max-width: 72%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 15px;
  line-height: 1.55;
}

.chat-bubble.partner {
  align-self: flex-end;
  background: var(--accent);
  color: #ffffff;
  border-bottom-right-radius: 6px;
}

.chat-bubble.partner .chat-role {
  color: rgba(255, 255, 255, 0.85);
}

.chat-bubble.aac_user {
  align-self: flex-start;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-bottom-left-radius: 6px;
}

.chat-bubble.loading {
  background: var(--surface);
  border: 1px solid var(--border);
}

.chat-bubble.loading p {
  display: inline-block;
  background: linear-gradient(
    90deg,
    var(--text-muted) 0%,
    var(--accent) 45%,
    var(--accent) 55%,
    var(--text-muted) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shimmer 1.8s ease-in-out infinite;
  font-weight: 500;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .chat-bubble.loading p {
    animation: none;
    background: none;
    -webkit-text-fill-color: var(--text-muted);
    color: var(--text-muted);
  }
}

.chat-role {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.chat-bubble p {
  margin: 0;
}

.chat-input-row {
  display: flex;
  gap: 10px;
  padding: 18px 28px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.chat-input-row input {
  flex: 1;
  padding: 11px 14px;
  font-size: 15px;
}

.chat-input-row button {
  background: var(--accent);
  color: #ffffff;
  border: none;
  border-radius: 10px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--sans);
  cursor: pointer;
  transition: background 0.15s;
}

.chat-input-row button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.chat-input-row button:hover:not(:disabled) {
  background: var(--accent-hover);
}

.error {
  color: var(--fail);
  font-size: 13px;
}

.sensing-debug {
  font-family: var(--mono, monospace);
  font-size: 11px;
  opacity: 0.7;
}

.calibrate-btn {
  margin-top: 8px;
  width: 100%;
  padding: 8px 12px;
  font-size: 13px;
  font-family: var(--sans);
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 8px;
  cursor: pointer;
}

.calibrate-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.calibrate-btn:hover:not(:disabled) {
  background: var(--accent);
  color: #ffffff;
}

.chat-bubble.rephrased p {
  opacity: 0.6;
  text-decoration: line-through;
}

.chat-bubble.turnaround {
  border-left: 3px solid var(--accent);
}

.badge {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 6px;
  font-size: 11px;
  font-weight: 500;
  border-radius: 10px;
  vertical-align: middle;
}

.badge-rephrased {
  background: rgba(0, 0, 0, 0.08);
  color: var(--fail);
}

.badge-turnaround {
  background: var(--accent);
  color: #ffffff;
}

.badge-picker {
  background: rgba(0, 0, 0, 0.08);
  color: var(--text);
}

.badge-picked {
  background: rgba(46, 160, 67, 0.18);
  color: #2ea043;
}

.chat-bubble.picker {
  background: transparent;
  padding: 4px 0 0 0;
  max-width: 85%;
}

.candidate-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 6px;
}

.candidate-card {
  text-align: left;
  background: var(--surface);
  color: var(--text);
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease, transform 80ms ease;
}

.candidate-card:hover {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.05);
}

.candidate-card:active {
  transform: scale(0.995);
}

.candidate-strategy {
  font-size: 11px;
  color: rgba(0, 0, 0, 0.55);
  margin-bottom: 4px;
  text-transform: lowercase;
  letter-spacing: 0.02em;
}

.candidate-text {
  font-size: 14px;
  line-height: 1.4;
}

.candidate-list.rejected-round {
  opacity: 0.55;
  margin-bottom: 4px;
}

.rejected-round-label {
  font-size: 10px;
  color: rgba(0, 0, 0, 0.45);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.candidate-card.rejected {
  cursor: default;
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
}

.candidate-card.rejected .candidate-text {
  text-decoration: line-through;
  color: rgba(0, 0, 0, 0.55);
}

.candidate-card.rejected:hover {
  border-color: rgba(0, 0, 0, 0.08);
  background: rgba(0, 0, 0, 0.03);
}

.candidate-card.try-again {
  border-style: dashed;
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.03);
}

.candidate-card.try-again .candidate-strategy {
  color: var(--accent);
}

.candidate-card.try-again:hover:not(:disabled) {
  background: rgba(59, 130, 246, 0.09);
}

.candidate-card:disabled {
  opacity: 0.5;
  cursor: wait;
}

.turnaround-btn {
  background: transparent !important;
  color: var(--accent) !important;
  border: 1px solid var(--accent) !important;
}

.turnaround-btn:hover:not(:disabled) {
  background: var(--accent) !important;
  color: #ffffff !important;
}

.mic-btn {
  background: transparent !important;
  color: var(--accent) !important;
  border: 1px solid var(--accent) !important;
}

.mic-btn.listening {
  background: var(--accent) !important;
  color: #ffffff !important;
  animation: mic-pulse 1.1s ease-in-out infinite;
}

@keyframes mic-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.voice-status {
  padding: 4px 12px;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--sans);
}

.eval-panel {
  margin-top: 10px;
  border-top: 1px solid var(--border);
  padding-top: 8px;
}

.eval-toggle {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-family: var(--sans);
  cursor: pointer;
  padding: 2px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.eval-toggle:hover {
  color: var(--text);
}

.slo-badge {
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.slo-badge.pass {
  background: var(--pass-bg);
  color: var(--pass);
}

.slo-badge.fail {
  background: var(--fail-bg);
  color: var(--fail);
}

.eval-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.eval-pill {
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.2px;
  white-space: nowrap;
  border: 1px solid transparent;
}

.eval-pill.good {
  background: var(--pass-bg);
  color: var(--pass);
}

.eval-pill.mid {
  background: var(--border);
  color: var(--text-muted);
}

.eval-pill.bad {
  background: var(--fail-bg);
  color: var(--fail);
}

.eval-pill.muted {
  background: transparent;
  color: var(--text-faint);
  border-color: var(--border);
}

.tip {
  position: relative;
  display: inline-flex;
  cursor: help;
}

.tip::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  background: #1f2937;
  color: #f9fafb;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0.1px;
  white-space: pre-line;
  width: max-content;
  max-width: 320px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.08s ease-in 0.5s;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.tip::before {
  content: "";
  position: absolute;
  bottom: calc(100% + 2px);
  left: 12px;
  border: 6px solid transparent;
  border-top-color: #1f2937;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.08s ease-in 0.5s;
  z-index: 100;
}

.tip:hover::after,
.tip:hover::before {
  opacity: 1;
}

.eval-details {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 10px;
}

.eval-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.eval-na {
  font-size: 11px;
  color: var(--text-faint);
  font-style: italic;
}

.score-bar {
  height: 4px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.score-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.3s ease;
}

.star-rating {
  display: flex;
  align-items: center;
  gap: 2px;
}

.star-rating .star {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--border-strong);
  padding: 0;
  line-height: 1;
  transition: color 0.15s;
}

.star-rating .star.active {
  color: var(--accent);
}

.star-rating .star:hover {
  color: var(--accent-hover);
}

.star-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 6px;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-faint);
}

.calibration-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.calibration-card {
  background: var(--bg, #fff);
  color: var(--text, #111);
  padding: 28px 32px;
  border-radius: 12px;
  max-width: 420px;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border, #ddd);
}

.calibration-card h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

.calibration-instructions {
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 18px;
  opacity: 0.85;
}

.calibration-bar {
  height: 8px;
  background: rgba(127, 127, 127, 0.2);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 10px;
}

.calibration-bar-fill {
  height: 100%;
  background: var(--accent, #4a8af4);
  transition: width 120ms linear;
}

.calibration-countdown {
  font-size: 12px;
  opacity: 0.65;
  margin-bottom: 14px;
}

.calibration-cancel {
  background: transparent;
  border: 1px solid var(--border, #ccc);
  color: inherit;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}

.calibration-cancel:hover {
  background: rgba(127, 127, 127, 0.1);
}

.recalibrate-btn {
  margin-left: 8px;
  padding: 2px 8px;
  font-size: 11px;
  background: transparent;
  border: 1px solid var(--border, #ccc);
  border-radius: 4px;
  color: inherit;
  cursor: pointer;
}

.recalibrate-btn:hover {
  background: rgba(127, 127, 127, 0.1);
}