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

body {
  background: #0a0a0a;
  color: #e0e0e0;
  font-family: "JetBrains Mono", SFMono-Regular, Consolas, monospace;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.site-header {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  font-family: inherit;
  font-size: 13px;
  display: flex;
  align-items: center;
}

.site-breadcrumb {
  color: #777;
  text-decoration: none;
}

.site-breadcrumb:hover {
  color: #ccc;
}

.site-breadcrumb-sep {
  color: #333;
  margin: 0 0.35em;
}

.site-breadcrumb-current {
  color: #555;
}

#demo-toggle {
  margin-left: auto;
  background: none;
  border: none;
  color: #333;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  transition: color 0.2s;
}

#demo-toggle:hover {
  color: #888;
}

#demo-settings-toggle {
  background: none;
  border: none;
  color: #333;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  margin-left: 8px;
  transition: color 0.2s;
}

#demo-settings-toggle:hover {
  color: #888;
}

.demo-settings-panel {
  position: absolute;
  top: 100%;
  right: 0;
  width: 320px;
  background: #141414;
  border: 1px solid #222;
  border-radius: 8px;
  padding: 16px;
  z-index: 200;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
}

.demo-settings-label {
  display: block;
  font-size: 10px;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.demo-settings-label + .demo-settings-label {
  margin-top: 14px;
}

.demo-settings-textarea {
  width: 100%;
  background: #0e0e0e;
  border: 1px solid #222;
  border-radius: 6px;
  color: #ccc;
  font-family: inherit;
  font-size: 12px;
  padding: 8px 10px;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s;
  margin-bottom: 2px;
}

.demo-settings-textarea:focus {
  border-color: #444;
}

.demo-tools-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2px;
}

.demo-tools-header .demo-settings-label {
  margin-bottom: 0;
}

.demo-tool-row-all {
  padding: 0;
}

.demo-tools-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.demo-tool-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
}

.demo-tool-toggle {
  position: relative;
  width: 28px;
  height: 16px;
  background: #222;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.2s;
}

.demo-tool-toggle::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  background: #555;
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}

.demo-tool-toggle.on {
  background: #1a3a2a;
}

.demo-tool-toggle.on::after {
  transform: translateX(12px);
  background: #4ade80;
}

.demo-tool-name {
  font-size: 12px;
  color: #888;
}

.demo-tool-row.off .demo-tool-name {
  color: #444;
}

.app-shell {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.25rem;
  overflow-x: hidden;
}

/* ── Orb Section ── */

.orb-section {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.orb-wrap {
  position: relative;
  width: 400px;
  height: 400px;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.orb-wrap:hover {
  transform: scale(1.03);
}

.orb-wrap:active {
  transform: scale(0.97);
  transition-duration: 0.1s;
}

.orb-wrap.orb-active {
  transform: scale(1.01);
}

.orb-wrap.orb-active:hover {
  transform: scale(0.98);
}

.orb-wrap.orb-active:active {
  transform: scale(0.95);
  transition-duration: 0.1s;
}

.orb-wrap.orb-connecting {
  animation: orb-pulse 1.5s ease-in-out infinite;
  cursor: wait;
}

@keyframes orb-pulse {
  0%, 100% { transform: scale(1.0); }
  50% { transform: scale(1.04); }
}

.orb-wrap canvas {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: block;
}

.orb-glow {
  position: absolute;
  inset: -20%;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(40px);
  opacity: 0.3;
  z-index: -1;
  background: radial-gradient(
    circle,
    rgba(56, 189, 248, 0.4),
    rgba(16, 185, 129, 0.2),
    transparent 70%
  );
  transition: opacity 0.4s ease, filter 0.4s ease;
}

.orb-wrap:hover .orb-glow {
  opacity: 0.45;
  filter: blur(50px);
}

.orb-wrap.orb-active .orb-glow {
  opacity: 0.5;
  filter: blur(45px);
}

.orb-ring {
  display: none;
}

#session-status {
  margin-top: 10px;
  font-size: 12px;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-align: center;
  transition: color 0.2s ease;
}

.orb-wrap:hover ~ #session-status {
  color: #888;
}

#ttfa-timer {
  font-size: 28px;
  font-weight: 600;
  color: #555;
  text-align: center;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.5px;
  margin-top: 4px;
  opacity: 0;
  height: 0;
  overflow: hidden;
  transition: opacity 0.4s ease, height 0.3s ease, color 0.3s ease;
}

#ttfa-timer.visible {
  opacity: 1;
  height: 2.2em;
  color: #888;
}

#ttfa-timer.stopped {
  animation: ttfa-flash 0.4s ease-out;
  color: #4ade80;
}

@keyframes ttfa-flash {
  0% { color: #fff; }
  40% { color: #fff; }
  100% { color: #4ade80; }
}

/* ── Controls Row ── */

/* ── Controls ── */

.controls {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 24px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-label {
  font-size: 10px;
  color: #444;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-family: inherit;
}

/* Scenario pills */

.pill-group {
  display: flex;
  gap: 4px;
}

.pill {
  background: transparent;
  border: 1px solid #222;
  color: #555;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}

.pill:hover {
  border-color: #333;
  color: #888;
}

.pill.active {
  background: #1a1a1a;
  border-color: #333;
  color: #ccc;
}

.pill:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* TTS model segmented control */

.segmented {
  display: flex;
  position: relative;
  background: #111;
  border: 1px solid #222;
  border-radius: 8px;
  padding: 2px;
}

.seg-btn {
  position: relative;
  z-index: 1;
  background: transparent;
  border: none;
  color: #555;
  padding: 5px 14px;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  border-radius: 6px;
  transition: color 0.2s;
  white-space: nowrap;
}

.seg-btn:hover {
  color: #888;
}

.seg-btn.active {
  color: #ddd;
}

.seg-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.seg-indicator {
  position: absolute;
  top: 2px;
  height: calc(100% - 4px);
  background: #1e1e1e;
  border-radius: 6px;
  transition: left 0.25s cubic-bezier(0.4, 0, 0.2, 1), width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Voice select */

.controls select {
  background: #111;
  border: 1px solid #222;
  color: #aaa;
  border-radius: 8px;
  padding: 5px 10px;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}

.controls select:hover {
  border-color: #333;
}

.controls select:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Call buttons */

.call-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 16px;
}

#start-session-btn,
#end-session-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  padding: 0;
}

#start-session-btn {
  background: #e8e8e8;
  color: #222;
  border: none;
}

#start-session-btn:hover:not(:disabled) {
  background: #fff;
  color: #111;
}

#start-session-btn:active:not(:disabled) {
  transform: scale(0.93);
  transition-duration: 0.1s;
}

#end-session-btn {
  background: #181818;
  color: #666;
  border: 1px solid #282828;
}

#end-session-btn:hover:not(:disabled) {
  background: #1e1e1e;
  color: #f87171;
  border-color: #3a2a2a;
}

#end-session-btn:active:not(:disabled) {
  transform: scale(0.93);
  transition-duration: 0.1s;
}

#start-session-btn:disabled,
#end-session-btn:disabled {
  opacity: 0.15;
  cursor: not-allowed;
}

/* ── Error ── */

#session-error {
  margin-top: 8px;
  color: #f87171;
  font-size: 13px;
  text-align: center;
  min-height: 1.25rem;
}

#session-error[data-tone="neutral"] {
  color: #94a3b8;
}

/* ── Two-column Panels ── */

.panels {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 1px;
  min-height: 300px;
  margin-top: 0;
  background: #1a1a1a;
  border-radius: 8px;
  overflow: hidden;
}

.panel {
  background: #111;
  padding: 16px;
}

.panel h2 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #555;
  margin-bottom: 8px;
}

.panel-scroll {
  overflow-y: auto;
  max-height: 400px;
}

/* ── Transcript entries ── */

.message {
  padding: 6px 0;
}

.message + .message {
  border-top: 1px solid #1a1a1a;
}

.message-role {
  display: inline-block;
  font-size: 11px;
  font-family: inherit;
  min-width: 40px;
  margin-right: 8px;
}

.message[data-role="user"] .message-role {
  color: #888;
}

.message[data-role="assistant"] .message-role {
  color: #6b9fff;
}

.message-text {
  font-size: 13px;
  color: #ccc;
  line-height: 1.5;
}

/* ── Background entries ── */

.bg-entry {
  padding: 8px 0;
}

.bg-entry + .bg-entry {
  border-top: 1px solid #1a1a1a;
}

.bg-entry-label {
  font-size: 12px;
  color: #555;
}

.bg-entry[data-status="in_progress"] .bg-entry-label {
  color: #888;
}

.bg-entry-detail {
  font-size: 11px;
  color: #555;
  margin-top: 2px;
}

.bg-tool-call {
  padding: 4px 0;
}

.bg-tool-call + .bg-tool-call {
  padding-top: 6px;
}

.bg-tool-name {
  font-family: inherit;
  font-size: 12px;
  color: #ccc;
}

.bg-tool-arrow {
  color: #444;
  margin: 0 4px;
}

.bg-tool-result {
  font-size: 11px;
  color: #666;
  margin-top: 2px;
  line-height: 1.4;
}

.bg-tool-err {
  color: #ef4444;
}

.bg-action {
  font-size: 10px;
  font-family: inherit;
  color: #777;
  padding: 2px 0;
}

.bg-action-ok {
  color: #4ade80;
}

.bg-action-err {
  color: #ef4444;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.4;
  }
  50% {
    opacity: 1;
  }
}

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

/* ── Gantt Section ── */

.gantt-section {
  margin-top: 24px;
  border-top: 1px solid #1a1a1a;
  padding-top: 16px;
}

.gantt-section h2 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #555;
  margin-bottom: 8px;
}

.gantt-turn {
  margin-bottom: 32px;
}

.gantt-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 16px;
  padding-left: 100px;
}

.gantt-turn-label {
  font-family: inherit;
  font-size: 11px;
  color: #888;
  font-weight: 600;
}

.gantt-stats {
  font-family: inherit;
  font-size: 10px;
  color: #6B7280;
}

.gantt-stat-value {
  font-weight: 600;
  color: #999;
}

.gantt-chart {
  position: relative;
  margin-left: 100px;
  height: 96px;
  margin-bottom: 18px;
}

.gantt-lane {
  position: relative;
  height: 24px;
  display: flex;
  align-items: center;
}

.gantt-lane-label {
  position: absolute;
  left: -100px;
  width: 92px;
  text-align: right;
  font-family: inherit;
  font-size: 10px;
  color: #555;
  white-space: nowrap;
}

.gantt-bar {
  position: absolute;
  height: 60%;
  top: 20%;
  border-radius: 0;
  min-width: 2px;
}

.gantt-bar.confirm-eot { background: #64748B; }
.gantt-bar.llm-ttft { background: #818CF8; }
.gantt-bar.llm-stream { background: #6366F1; }
.gantt-bar.tts-buffer { background: #EBD59C; opacity: 0.5; }
.gantt-bar.tts-process { background: #FBBF24; }
.gantt-bar.tts-stream { background: #F59E0B; }
.gantt-bar.play-delivery { background: #86EFAC; opacity: 0.7; }
.gantt-bar.play-active { background: #22C55E; }

.gantt-bar:hover {
  opacity: 1 !important;
  filter: brightness(1.2);
}

.gantt-float-tip {
  display: none;
  position: fixed;
  background: #1c1c1c;
  border: 1px solid #333;
  border-radius: 6px;
  padding: 6px 10px;
  font-family: inherit;
  font-size: 10px;
  color: #ccc;
  white-space: nowrap;
  max-width: 240px;
  line-height: 1.5;
  z-index: 100;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.gantt-float-tip strong {
  color: #fff;
}

.gantt-tooltip-dur {
  color: #888;
}

.gantt-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 0;
  z-index: 10;
  pointer-events: none;
}

.gantt-marker.marker-eot { border-left: 1.5px dotted #475569; }
.gantt-marker.marker-eager-eot { border-left: 1.2px dotted #64748B; }
.gantt-marker.marker-ttft { border-left: 1.5px dashed #818CF8; }
.gantt-marker.marker-audio { border-left: 1.5px dashed #F59E0B; }

.gantt-marker-label {
  position: absolute;
  white-space: nowrap;
  font-family: inherit;
  font-size: 9px;
  left: 4px;
}

.marker-eot .gantt-marker-label { color: #475569; top: -12px; }
.marker-eager-eot .gantt-marker-label { color: #64748B; top: -12px; right: 4px; left: auto; }
.marker-ttft .gantt-marker-label { color: #818CF8; bottom: -14px; }
.marker-audio .gantt-marker-label { color: #F59E0B; bottom: -14px; }

.gantt-spec-shade {
  position: absolute;
  top: 0;
  bottom: 0;
  background: rgba(99, 102, 241, 0.12);
  z-index: 0;
  pointer-events: none;
}

/* ── Gantt expand ── */

.gantt-turn.gantt-hidden {
  display: none;
}

.expand-btn {
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  background: transparent;
  border: none;
  color: #444;
  padding: 4px;
  cursor: pointer;
  transition: color 0.2s;
}

.expand-btn:not([hidden]) {
  display: flex;
}

.expand-btn:hover {
  color: #888;
}

/* ── About ── */

.about-section {
  margin-top: 32px;
  border-top: 1px solid #1a1a1a;
  padding-top: 16px;
}

.about-section h2 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #555;
  margin-bottom: 12px;
}

.about-section > p {
  font-size: 13px;
  color: #777;
  line-height: 1.6;
  max-width: 600px;
  margin-bottom: 16px;
}

.about-byline {
  font-size: 13px;
  color: #555;
  margin-top: 16px;
}

.about-byline a {
  color: #777;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.about-byline a:hover {
  color: #ccc;
}

.about-claim {
  position: relative;
  color: #ccc;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 3px;
  cursor: default;
}

.about-claim-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  width: max-content;
  max-width: 260px;
  padding: 8px 12px;
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 6px;
  font-size: 11px;
  color: #999;
  line-height: 1.5;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  white-space: normal;
}

.about-claim:hover .about-claim-tooltip,
.about-claim:focus .about-claim-tooltip {
  opacity: 1;
}

.about-stat {
  color: #999;
  font-weight: 500;
}

.about-bullets {
  font-size: 13px;
  color: #777;
  line-height: 1.6;
  max-width: 1200px;
  margin-bottom: 16px;
  padding-left: 20px;
  list-style: disc;
}

.about-bullets li {
  margin-bottom: 4px;
  text-wrap: pretty;
}

.about-section a {
  color: #888;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.about-section a:hover {
  color: #ccc;
}

.about-stack {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 24px;
}

.about-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 6px 0;
}

.about-label {
  font-family: inherit;
  font-size: 10px;
  color: #444;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.about-value {
  font-size: 12px;
  color: #888;
}

/* ── Demo mode ── */

body.demo-mode {
  scrollbar-width: none;
}

body.demo-mode::-webkit-scrollbar {
  display: none;
}

body.demo-mode .site-breadcrumb,
body.demo-mode .site-breadcrumb-sep,
body.demo-mode .site-breadcrumb-current {
  display: none;
}

body.demo-mode .controls {
  display: none;
}

body.demo-mode .gantt-section {
  display: none;
}

body.demo-mode .about-section {
  display: none;
}

body.demo-mode #session-error:empty {
  display: none;
}

body.demo-mode .call-buttons {
  margin-bottom: 24px;
}

/* ── Desktop layout override (mobile in demo mode) ── */

body.demo-desktop-layout .orb-wrap {
  width: min(400px, 50vh);
  height: min(400px, 50vh);
}

body.demo-desktop-layout .panels {
  grid-template-columns: 3fr 2fr;
}

body.demo-desktop-layout .controls {
  flex-wrap: nowrap;
}

/* ── Responsive ── */

@media (max-width: 640px) {
  .panels {
    grid-template-columns: 1fr;
  }

  .orb-wrap {
    width: 280px;
    height: 280px;
  }

  .controls {
    flex-wrap: wrap;
  }
}