:root {
  --bg: #0F0F0F;
  --surface: #1a1a1a;
  --surface-2: #232323;
  --border: #2a2a2a;
  --text: #FFFFFF;
  --text-muted: #8F8F8F;
  --text-soft: #CCCACA;
  --accent: #ff8044;
  --accent-hover: #ff6a22;
  --accent-dark: #ae3e09;
  --success: #38a169;
  --success-bg: rgba(56, 161, 105, 0.15);
  --danger: #df3336;
  --danger-bg: rgba(223, 51, 54, 0.15);
}

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

body {
  font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.01em;
}

h1 {
  font-size: 1.75rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
  text-align: center;
}

h2 {
  font-size: 1.25rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 300;
  margin-bottom: 2rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.container {
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.container-listener {
  flex: 1;
}

.card {
  background: var(--surface);
  border-radius: 14px;
  padding: 1.5rem;
  border: 1px solid var(--border);
}

.card-translation {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.status {
  padding: 0.6rem 1rem;
  border-radius: 999px;
  text-align: center;
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

.status:empty {
  display: none;
}

.status-idle {
  background: var(--surface-2);
  color: var(--text-soft);
}

.status-active {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success);
}

.status-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger);
}

button {
  font-family: inherit;
  padding: 0.95rem 1.5rem;
  border: none;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 0.18s ease, transform 0.08s ease, opacity 0.18s ease;
  width: 100%;
}

button:active {
  transform: scale(0.98);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover:not(:disabled) {
  background: #c82a2d;
}

.btn-success {
  background: var(--accent);
  color: #fff;
}

.btn-success:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-group {
  display: flex;
  gap: 0.75rem;
}

.btn-group button {
  flex: 1;
}

.audio-level-container {
  height: 8px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
}

.audio-level-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  width: 0%;
  transition: width 0.1s;
  border-radius: 999px;
}

.vad-status {
  margin-top: 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  padding: 0.3rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

.vad-silent {
  color: var(--text-muted);
}

.transcript-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  min-height: 80px;
  max-height: 150px;
  overflow-y: auto;
  font-size: 1.1rem;
  line-height: 1.5;
}

.transcript-box.translated {
  color: var(--text);
  font-weight: 400;
}

.transcript-box-large {
  min-height: 50vh;
  max-height: 65vh;
  font-size: 1.6rem;
  line-height: 1.55;
  padding: 1.5rem;
  font-weight: 500;
}

.card-translation .transcript-box-large {
  flex: 1;
}

label {
  display: block;
  font-size: 0.7rem;
  color: var(--accent);
  margin-bottom: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 700;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 0.25rem 0.25rem;
}

.info-row :last-child {
  color: var(--text);
  font-weight: 600;
}

/* QR page */
.container-qr {
  align-items: center;
}

.qr-frame {
  background: #FFFFFF;
  border-radius: 24px;
  padding: 1.5rem;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  border: 3px solid var(--accent);
  box-shadow: 0 8px 32px rgba(255, 128, 68, 0.15);
}

.qr-canvas {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
}

.qr-canvas svg {
  width: 100%;
  height: 100%;
  display: block;
}

.qr-url-wrapper {
  text-align: center;
  width: 100%;
}

.qr-url {
  font-family: "Poppins", monospace;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  word-break: break-all;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border-radius: 999px;
  border: 1px solid var(--border);
  display: inline-block;
  max-width: 100%;
}

.qr-warning {
  background: rgba(255, 128, 68, 0.12);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.8rem 1rem;
  border-radius: 10px;
  font-size: 0.85rem;
  text-align: center;
  font-weight: 500;
}

/* Landing page */
.role-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.role-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2rem 1.5rem;
  text-align: center;
  transition: border-color 0.2s, transform 0.1s, background-color 0.2s;
}

.role-card:hover {
  border-color: var(--accent);
  background: var(--surface-2);
  transform: translateY(-2px);
}

.role-card h2 {
  margin-bottom: 0.5rem;
  color: var(--accent);
}

.role-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 300;
}

.select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: inherit;
  font-size: 1rem;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23ff8044' stroke-width='2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
}

.select:focus {
  outline: none;
  border-color: var(--accent);
}

.hint {
  margin-top: 0.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 300;
}