:root {
  --bg-page: #f8f9fa;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f3f4;
  --bg-subtle: #f1f3f4;
  --border-color: #dadce0;
  --text-main: #202124;
  --text-secondary: #5f6368;
  --text-muted: #5f6368;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Official Google 4-color Palette */
  --google-blue: #1a73e8;
  --google-blue-bg: #e8f0fe;
  --google-green: #137333;
  --google-green-bg: #e6f4ea;
  --google-yellow: #b06000;
  --google-yellow-bg: #fef7e0;
  --google-red: #c5221f;
  --google-red-bg: #fce8e6;
  --google-purple: #7627bb;
  --google-purple-bg: #f3e8fd;

  --shadow-sm: 0 1px 2px 0 rgba(60,64,67,0.08), 0 1px 3px 1px rgba(60,64,67,0.05);
  --shadow-md: 0 1px 3px 0 rgba(60,64,67,0.14), 0 4px 8px 3px rgba(60,64,67,0.08);
  --shadow-lg: 0 8px 24px rgba(60,64,67,0.18);
}

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

body {
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: 'Google Sans', 'Plus Jakarta Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.hidden {
  display: none !important;
}

/* Google Top Navigation Header */
.top-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 3px rgba(60,64,67,0.06);
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  font-size: 18px;
  font-weight: 700;
  color: #202124;
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge-vertex {
  background: var(--google-green-bg);
  border: 1px solid #ceead6;
  color: var(--google-green);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  background: #34A853;
  border-radius: 50%;
  box-shadow: 0 0 6px rgba(52,168,83,0.6);
}

/* Segmented Mode Tabs */
.mode-tabs {
  display: flex;
  background: #f1f3f4;
  padding: 4px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  gap: 4px;
}

.mode-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.mode-tab:hover {
  color: var(--text-main);
  background: rgba(255,255,255,0.7);
}

.mode-tab.active {
  background: var(--google-blue);
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(26,115,232,0.3);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.warm-chip {
  background: var(--google-yellow-bg);
  border: 1px solid #fde293;
  color: var(--google-yellow);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-mono);
}

.btn-cdp-drawer {
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-cdp-drawer:hover {
  background: var(--bg-card-hover);
  border-color: #bdc1c6;
}

/* Main Container */
.main-container {
  max-width: 1540px;
  margin: 0 auto;
  padding: 20px 28px 60px;
}

/* Scenario Deck Grid */
.scenario-bar {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.sample-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px 16px;
  cursor: pointer;
  transition: all 0.18s ease;
  box-shadow: var(--shadow-sm);
}

.sample-card:hover {
  border-color: #8ab4f8;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.sample-card.active {
  border: 2px solid var(--google-blue);
  background: #f8fbff;
  box-shadow: 0 2px 8px rgba(26, 115, 232, 0.15);
}

.sample-badge {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--google-blue);
  margin-bottom: 6px;
}

.sample-title {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.sample-lang {
  font-size: 11.5px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Action & Audio Control Strip */
.control-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 12px 18px;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 14px;
  box-shadow: var(--shadow-sm);
}

.player-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-run-primary {
  background: var(--google-blue);
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 1px 3px rgba(26, 115, 232, 0.3);
  transition: all 0.18s;
}
.btn-run-primary:hover {
  background: #1557b0;
}

.btn-mic-live {
  background: #ffffff;
  color: var(--google-red);
  border: 1px solid #f28b82;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}
.btn-mic-live:hover {
  background: var(--google-red-bg);
}
.btn-mic-live.recording {
  background: var(--google-red);
  color: #ffffff;
}

.audio-player-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

audio {
  height: 36px;
  width: 280px;
}

/* 4-KPI Telemetry Strip */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.kpi-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px 18px;
  box-shadow: var(--shadow-sm);
}

.kpi-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11.5px;
  color: var(--text-secondary);
  font-weight: 700;
  margin-bottom: 6px;
}

.kpi-value {
  font-size: 26px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--google-blue);
  margin-bottom: 4px;
}

.kpi-sub {
  font-size: 11.5px;
  color: var(--text-secondary);
}

/* Slide 13 Segmentation Controls Header */
.iphone-section-header {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-left: 5px solid var(--google-blue);
  border-radius: 12px;
  padding: 14px 20px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.slider-controls {
  display: flex;
  align-items: center;
  gap: 18px;
}

.slider-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-subtle);
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-main);
}

input[type="range"] {
  accent-color: var(--google-blue);
  cursor: pointer;
}

/* ============================================================================
   TAB 1: DUAL iPHONE 16 PRO SIMULATOR (WHITE / SILVER TITANIUM GOOGLE THEME)
   ============================================================================ */
.iphone-arena {
  display: grid;
  grid-template-columns: 410px 410px 1fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 1360px) {
  .iphone-arena {
    grid-template-columns: 1fr 1fr;
  }
}

.iphone-frame {
  width: 410px;
  height: 750px;
  background: #ffffff;
  border-radius: 48px;
  border: 10px solid #e0e3e7;
  box-shadow: 0 10px 28px rgba(60, 64, 67, 0.14), inset 0 0 0 1.5px #ffffff;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.iphone-statusbar {
  height: 40px;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  font-size: 12px;
  font-weight: 700;
  color: #202124;
  border-bottom: 1px solid #f1f3f4;
  position: relative;
}

.iphone-notch {
  width: 90px;
  height: 22px;
  background: #202124;
  border-radius: 999px;
}

.iphone-app-header {
  padding: 12px 18px;
  background: #ffffff;
  border-bottom: 1px solid #e8eaed;
}

.iphone-app-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
  font-weight: 700;
  color: #202124;
  margin-bottom: 4px;
}

.iphone-app-sub {
  font-size: 11.5px;
  color: #5f6368;
}

.iphone-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  background: #f8f9fa;
}

.unsegmented-wall {
  background: #fff8f7;
  border: 1.5px solid #f28b82;
  border-radius: 14px;
  padding: 16px;
  color: #202124;
  font-size: 14px;
  line-height: 1.75;
  word-break: break-all;
}

.seg-row {
  background: #ffffff;
  border: 1px solid #dadce0;
  border-radius: 12px;
  padding: 11px 14px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 1px 2px rgba(60,64,67,0.04);
}

.seg-row:hover {
  border-color: var(--google-blue);
  background: #f8fbff;
  transform: translateX(2px);
}

.seg-row.playing {
  border: 2px solid var(--google-green);
  background: #f2fbf5;
}

.seg-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 5px;
}

.spk-badge {
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-mono);
  padding: 2px 8px;
  border-radius: 6px;
}

.spk-badge.spk-1 {
  background: var(--google-blue-bg);
  color: var(--google-blue);
}

.spk-badge.spk-2 {
  background: var(--google-purple-bg);
  color: var(--google-purple);
}

.seg-reason-tag {
  font-size: 10.5px;
  color: #5f6368;
  font-family: var(--font-mono);
  background: #f1f3f4;
  padding: 2px 6px;
  border-radius: 4px;
}

.seg-text {
  font-size: 14px;
  color: #202124;
  font-weight: 500;
  line-height: 1.55;
}

.iphone-footer-bar {
  padding: 10px 16px;
  background: #ffffff;
  border-top: 1px solid #e8eaed;
  font-size: 11.5px;
  font-weight: 600;
  text-align: center;
}

.slide15-explainer {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.explainer-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
}

.explainer-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================================
   TAB 2: LIVE STREAMING + VERTEX AI ACOUSTIC RADAR & SPEECH-TO-INTENT
   ============================================================================ */
.live-arena-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.panel-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid #f1f3f4;
}

.panel-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}

.stream-box {
  border-radius: 10px;
  padding: 14px;
  min-height: 82px;
  margin-bottom: 14px;
  line-height: 1.6;
}

.stream-box.interim-text {
  background: #f8fbff;
  border: 1.5px dashed #8ab4f8;
  font-size: 14.5px;
  color: var(--google-blue);
  font-weight: 600;
}

.stream-box.final-smart-text {
  background: #f2fbf5;
  border: 1.5px solid #81c995;
  font-size: 15.5px;
  color: #0d4620;
  font-weight: 700;
}

.radar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.radar-item {
  background: var(--bg-page);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 12px 14px;
}

.radar-item-label {
  font-size: 11.5px;
  color: var(--text-secondary);
  margin-bottom: 4px;
  font-weight: 600;
}

.radar-item-val {
  font-size: 14px;
  font-weight: 700;
}

.media-poster-card {
  background: #f8fbff;
  border: 1px solid #aecbfa;
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 14px;
}

.action-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.action-chip {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-main);
  box-shadow: 0 1px 2px rgba(60,64,67,0.05);
}

/* ============================================================================
   TAB 3: MATRIX TABLE
   ============================================================================ */
.matrix-table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.matrix-table th {
  background: #f1f3f4;
  color: var(--text-main);
  text-align: left;
  padding: 14px 18px;
  font-size: 13px;
  font-weight: 700;
  border-bottom: 2px solid var(--border-color);
}

.matrix-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  font-size: 13.5px;
  color: var(--text-main);
}

/* ============================================================================
   CDP TELEMETRY DRAWER (GOOGLE CLOUD INSPECTOR LIGHT STYLE)
   ============================================================================ */
.cdp-drawer {
  position: fixed;
  top: 64px;
  right: -540px;
  width: 500px;
  max-height: 82vh;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: right 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.cdp-drawer.open {
  right: 20px;
}

.cdp-drawer-header {
  padding: 12px 18px;
  background: #f8f9fa;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cdp-log-list {
  padding: 12px;
  overflow-y: auto;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: #ffffff;
}

.log-entry {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 8px 10px;
  border-radius: 6px;
  background: #f8f9fa;
  border-left: 3px solid var(--google-blue);
  color: #202124;
  word-break: break-all;
}