* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--tg-theme-bg-color, #14151a);
  color: var(--tg-theme-text-color, #f0f0f0);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

#app {
  max-width: 480px;
  margin: 0 auto;
  padding: 24px 20px 40px;
  min-height: 100vh;
}

.screen {
  display: none;
}

.screen.active {
  display: block;
  animation: fade-in 0.15s ease-out;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.title {
  font-size: 28px;
  text-align: center;
  margin: 40px 0 4px;
}

.subtitle {
  text-align: center;
  color: var(--tg-theme-hint-color, #8a8a8a);
  margin-bottom: 40px;
}

.menu-buttons {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.btn {
  display: block;
  width: 100%;
  padding: 16px;
  border-radius: 14px;
  border: none;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background: var(--tg-theme-button-color, #3390ec);
  color: var(--tg-theme-button-text-color, #fff);
}

.btn-secondary {
  background: #2a2b33;
  color: #f0f0f0;
}

.btn-outline {
  background: transparent;
  border: 1px solid #3a3b45;
  color: #f0f0f0;
}

.btn-back {
  background: none;
  border: none;
  color: var(--tg-theme-hint-color, #8a8a8a);
  font-size: 15px;
  padding: 8px 0;
  margin-bottom: 20px;
  cursor: pointer;
}

h2 {
  text-align: center;
  margin-bottom: 24px;
}

.room-code {
  font-size: 42px;
  font-weight: 700;
  letter-spacing: 6px;
  text-align: center;
  background: #1f2027;
  border-radius: 16px;
  padding: 24px 0;
  margin: 20px 0;
}

.hint {
  text-align: center;
  color: var(--tg-theme-hint-color, #8a8a8a);
  font-size: 14px;
  margin-bottom: 24px;
}

#screen-create .btn {
  margin-bottom: 12px;
}

.waiting {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 24px;
  color: var(--tg-theme-hint-color, #8a8a8a);
  font-size: 14px;
}

.spinner {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid #3a3b45;
  border-top-color: #3390ec;
  animation: spin 0.8s linear infinite;
}

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

.code-input {
  display: block;
  width: 100%;
  font-size: 32px;
  letter-spacing: 8px;
  text-align: center;
  text-transform: uppercase;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid #3a3b45;
  background: #1f2027;
  color: #f0f0f0;
  margin-bottom: 20px;
}

.code-input:focus {
  outline: none;
  border-color: #3390ec;
}

.error {
  color: #ff6b6b;
  text-align: center;
  font-size: 14px;
  min-height: 18px;
}

h3 {
  font-size: 15px;
  color: var(--tg-theme-hint-color, #8a8a8a);
  margin: 20px 0 10px;
}

.swatch-row {
  display: flex;
  gap: 12px;
}

.swatch {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 3px solid transparent;
  cursor: pointer;
}

.swatch.selected {
  border-color: #3390ec;
}