:root {
  --tg-theme-bg-color: #ffffff;
  --tg-theme-text-color: #000000;
  --tg-theme-button-color: #2481cc;
  --tg-theme-button-text-color: #ffffff;
  --radius: 14px;
  --padding: 18px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin: 0;
  padding: var(--padding);
  background: var(--tg-theme-bg-color);
  color: var(--tg-theme-text-color);
  min-height: 100vh;
}

#app {
  max-width: 400px;
  margin: 0 auto;
}

.hidden { display: none !important; }

#loading {
  text-align: center;
  padding: 60px 20px;
  color: var(--tg-theme-hint-color, #999);
}
.loader {
  width: 40px;
  height: 40px;
  border: 3px solid #eee;
  border-top-color: var(--tg-theme-button-color, #2481cc);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

.step h1, .step h2 {
  margin: 0 0 8px;
  font-size: 1.4rem;
}

.subtitle {
  color: var(--tg-theme-hint-color, #666);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.back {
  background: none;
  border: none;
  color: var(--tg-theme-button-color);
  font-size: 1rem;
  padding: 0 0 12px;
  cursor: pointer;
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-card {
  background: var(--tg-theme-secondary-bg-color, #f5f5f5);
  padding: 18px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow);
}

.service-card:active {
  opacity: 0.8;
}

.service-card .name {
  font-weight: 600;
}

.service-card .meta {
  font-size: 0.9rem;
  color: var(--tg-theme-hint-color, #666);
  margin-top: 4px;
}

.dates-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.date-btn {
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--tg-theme-button-color);
  background: var(--tg-theme-bg-color);
  color: var(--tg-theme-text-color);
  font-size: 0.95rem;
  cursor: pointer;
}

.date-btn.available {
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  border-color: transparent;
}

.date-btn.unavailable {
  opacity: 0.5;
  cursor: not-allowed;
}

.slots-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.slot-btn {
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--tg-theme-button-color);
  background: var(--tg-theme-bg-color);
  color: var(--tg-theme-text-color);
  font-size: 0.9rem;
  cursor: pointer;
}

.slot-btn:active, .slot-btn.selected {
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

input {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid #ddd;
  font-size: 1rem;
  margin-bottom: 12px;
}

.btn-primary {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius);
  border: none;
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.success-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4caf50, #43a047);
  color: white;
  font-size: 2.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  box-shadow: var(--shadow);
}

.step h1 { font-size: 1.5rem; }
#masterName { color: var(--tg-theme-button-color, #2481cc); }

.error-msg {
  color: #d32f2f;
  margin-bottom: 16px;
}