:root {
  --bg: #0a0e18;
  --panel: rgba(14, 20, 36, 0.86);
  --panel-border: rgba(255, 180, 80, 0.22);
  --text: #f4f7ff;
  --muted: #9aa8c4;
  --accent: #ff6b3d;
  --accent-2: #3ecf8e;
  --primary: #3b82f6;
  --shark: #f59e0b;
  --glow: rgba(245, 158, 11, 0.35);
  --radius: 16px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  font-family: "Nunito", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: radial-gradient(1100px 700px at 70% 15%, #1a2440 0%, var(--bg) 50%, #05070e 100%);
  color: var(--text);
}

#app {
  position: relative;
  width: 100%;
  height: 100%;
}

#c {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

a {
  color: #7dd3fc;
  text-decoration: none;
}

.top-bar {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  pointer-events: none;
  z-index: 5;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(12px);
  padding: 12px 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  pointer-events: auto;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 1.35rem;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  box-shadow: 0 0 24px var(--glow);
}

.brand h1 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.12rem;
  letter-spacing: 0.02em;
}

.brand p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.load-status {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(12px);
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--muted);
  box-shadow: var(--shadow);
  pointer-events: auto;
  max-width: min(360px, 48vw);
}

.load-status.ready {
  color: #b7f7d4;
  border-color: rgba(62, 207, 142, 0.4);
}

.hud {
  position: absolute;
  left: 16px;
  bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 5;
  max-width: min(420px, calc(100vw - 32px));
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(14px);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px;
}

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

.btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font: 700 0.92rem "Nunito", system-ui, sans-serif;
  padding: 12px 14px;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease, box-shadow 0.12s ease;
}

.btn:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.12);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn.primary {
  background: linear-gradient(135deg, #2563eb, #38bdf8);
  border-color: transparent;
  color: #041018;
}

.btn.accent {
  background: linear-gradient(135deg, #ff6b3d, #fbbf24);
  border-color: transparent;
  color: #1a0b04;
  box-shadow: 0 0 24px rgba(255, 107, 61, 0.35);
}

.btn.accent.talking {
  animation: pulse 1.2s ease-in-out infinite;
}

.btn.ghost {
  background: transparent;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 12px rgba(255, 107, 61, 0.25);
  }
  50% {
    box-shadow: 0 0 28px rgba(255, 107, 61, 0.55);
  }
}

.tips {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.35;
}

.tips strong {
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.scale-note {
  color: #ffe0b2;
}

.ask-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ask-label {
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: "Space Grotesk", sans-serif;
}

.ask-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.ask-input {
  flex: 1;
  min-width: 0;
  background: rgba(0, 0, 0, 0.4);
  color: var(--text);
  border: 1px solid rgba(255, 200, 80, 0.25);
  border-radius: 12px;
  padding: 12px 14px;
  font: 600 0.92rem "Nunito", system-ui, sans-serif;
  outline: none;
}

.ask-input:focus {
  border-color: rgba(245, 158, 11, 0.65);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

.ask-input::placeholder {
  color: rgba(157, 168, 196, 0.75);
  font-weight: 500;
}

.ask-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.knowledge-stats {
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 600;
}

.speech-bubble {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: min(440px, calc(100vw - 32px));
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 244, 230, 0.96));
  color: #1a1408;
  border-radius: 20px 20px 6px 20px;
  padding: 16px 18px 14px;
  box-shadow: var(--shadow), 0 0 0 1px rgba(80, 40, 10, 0.08);
  z-index: 6;
  animation: pop-in 0.25s ease;
}

.speech-bubble::after {
  content: "";
  position: absolute;
  right: 28px;
  bottom: -12px;
  border-width: 12px 10px 0 10px;
  border-style: solid;
  border-color: rgba(255, 244, 230, 0.96) transparent transparent transparent;
}

@keyframes pop-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.speech-name {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #b45309;
  margin-bottom: 6px;
}

.speech-text {
  font-size: 0.98rem;
  line-height: 1.45;
  min-height: 3.2em;
}

.speech-progress {
  margin-top: 12px;
  height: 4px;
  border-radius: 999px;
  background: rgba(40, 20, 5, 0.1);
  overflow: hidden;
}

.speech-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #ff6b3d, #f59e0b, #3ecf8e);
  transition: width 0.12s linear;
}

.chunk-index {
  margin-top: 8px;
  font-size: 0.75rem;
  color: #8a6a40;
  font-weight: 700;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 50% 40%, rgba(28, 36, 64, 0.94), rgba(5, 7, 14, 0.97));
  z-index: 20;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-card {
  text-align: center;
  width: min(380px, 90vw);
  padding: 28px 24px;
  border-radius: 20px;
  background: rgba(12, 18, 32, 0.75);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
}

.loader-card h2 {
  margin: 16px 0 6px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.25rem;
}

.loader-card p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

.spinner {
  width: 48px;
  height: 48px;
  margin: 0 auto;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.12);
  border-top-color: #f59e0b;
  animation: spin 0.8s linear infinite;
}

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

.progress-track {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #f59e0b, #ff6b3d);
  transition: width 0.2s ease;
}

@media (max-width: 720px) {
  .top-bar {
    flex-direction: column;
  }

  .speech-bubble {
    left: 16px;
    right: 16px;
    width: auto;
    bottom: auto;
    top: 110px;
  }

  .hud {
    max-width: calc(100vw - 32px);
  }
}