:root {
  --navy: #123A6B;
  --teal: #0FA595;
  --ink: #12233d;
  --bg: #f4f7fa;
  --card-bg: #ffffff;
  --error: #c0392b;
  color-scheme: light;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(180deg, var(--navy) 0%, var(--bg) 220px);
  min-height: 100vh;
  color: var(--ink);
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 20px 12px;
  color: #fff;
}

.app-header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-header .logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.app-header h1 {
  font-size: 20px;
  margin: 0;
  font-weight: 600;
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.55);
  flex-shrink: 0;
}

.app-main {
  max-width: 480px;
  margin: 0 auto;
  padding: 16px 20px 48px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.lang-switch {
  display: flex;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 999px;
  padding: 4px;
  gap: 4px;
  align-self: center;
  box-shadow: 0 4px 16px rgba(18, 58, 107, 0.15);
}

.lang-btn {
  border: none;
  background: transparent;
  padding: 8px 22px;
  border-radius: 999px;
  font-size: 15px;
  color: var(--navy);
  cursor: pointer;
}

.lang-btn.active {
  background: var(--navy);
  color: #fff;
}

.card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 16px 18px;
  box-shadow: 0 6px 20px rgba(18, 58, 107, 0.10);
}

.card-label {
  font-size: 12px;
  color: #6b7a90;
  margin-bottom: 6px;
}

.card-text {
  font-size: 17px;
  line-height: 1.5;
  min-height: 24px;
  word-break: break-word;
  white-space: pre-wrap;
}

.card-thai {
  background: linear-gradient(135deg, var(--navy), var(--teal));
  color: #fff;
}

.card-thai .card-label {
  color: rgba(255, 255, 255, 0.75);
}

.thai-text {
  font-size: 22px;
  font-weight: 600;
}

.mock-badge {
  display: inline-block;
  margin-top: 10px;
  font-size: 11px;
  background: rgba(255, 255, 255, 0.2);
  padding: 3px 10px;
  border-radius: 999px;
}

.mock-badge[hidden] {
  display: none;
}

.text-form {
  display: flex;
  gap: 8px;
}

.text-form input {
  flex: 1;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #d7dee7;
  font-size: 15px;
}

.text-form button {
  padding: 12px 18px;
  border-radius: 12px;
  border: none;
  background: var(--teal);
  color: #fff;
  font-size: 15px;
  cursor: pointer;
}

.controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 8px;
}

.mic-btn {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  box-shadow: 0 8px 24px rgba(18, 58, 107, 0.35);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.mic-btn:active {
  transform: scale(0.94);
}

.mic-btn.recording {
  background: linear-gradient(135deg, #c0392b, #e67e22);
  animation: pulse 1.4s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(192, 57, 43, 0.45); }
  70% { box-shadow: 0 0 0 18px rgba(192, 57, 43, 0); }
  100% { box-shadow: 0 0 0 0 rgba(192, 57, 43, 0); }
}

.mic-icon {
  width: 22px;
  height: 30px;
  border: 3px solid #fff;
  border-radius: 12px;
  position: relative;
  display: block;
}

.mic-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -12px;
  transform: translateX(-50%);
  width: 30px;
  height: 14px;
  border: 3px solid #fff;
  border-top: none;
  border-radius: 0 0 16px 16px;
}

.replay-btn {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid #d7dee7;
  background: #fff;
  font-size: 14px;
  cursor: pointer;
}

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

.status {
  text-align: center;
  font-size: 13px;
  color: #6b7a90;
  min-height: 18px;
}

.error-msg {
  text-align: center;
  color: var(--error);
  background: #fdecea;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 14px;
}

@media (prefers-color-scheme: dark) {
  :root { color-scheme: dark; }
  body { background: linear-gradient(180deg, #0a1c33 0%, #10192a 220px); color: #e7ecf3; }
  .lang-switch { background: rgba(255,255,255,0.08); }
  .lang-btn { color: #d7e0ee; }
  .card { background: #16233b; box-shadow: 0 6px 20px rgba(0,0,0,0.35); }
  .card-label { color: #8b9bb4; }
  .text-form input { background: #16233b; border-color: #2a3a56; color: #e7ecf3; }
  .replay-btn { background: #16233b; border-color: #2a3a56; color: #e7ecf3; }
  .status { color: #8b9bb4; }
}