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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--tg-theme-bg-color, #fff);
  color: var(--tg-theme-text-color, #000);
  padding: 16px;
  font-size: 15px;
}

#app {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

label {
  font-weight: 500;
  display: block;
}

.required {
  color: var(--tg-theme-destructive-text-color, #e53935);
}

textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--tg-theme-hint-color, #ccc);
  border-radius: 10px;
  background: var(--tg-theme-secondary-bg-color, #f5f5f5);
  color: var(--tg-theme-text-color, #000);
  font-size: 15px;
  resize: none;
  outline: none;
}

textarea:focus {
  border-color: var(--tg-theme-button-color, #2196f3);
}

#date-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.date-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--tg-theme-secondary-bg-color, #f5f5f5);
  border-radius: 8px;
  padding: 8px 12px;
}

.date-item span {
  font-size: 14px;
}

.date-item button {
  background: none;
  border: none;
  color: var(--tg-theme-destructive-text-color, #e53935);
  cursor: pointer;
  font-size: 16px;
  padding: 0 4px;
  line-height: 1;
}

.date-input-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.date-input-row #date-input {
  flex: 1;
  padding: 9px 12px;
  border: 1px solid var(--tg-theme-hint-color, #ccc);
  border-radius: 10px;
  background: var(--tg-theme-secondary-bg-color, #f5f5f5);
  color: var(--tg-theme-text-color, #000);
  font-size: 15px;
  outline: none;
}

.date-input-row #date-input:focus {
  border-color: var(--tg-theme-button-color, #2196f3);
}

#add-date {
  background: var(--tg-theme-button-color, #2196f3);
  border: none;
  border-radius: 8px;
  color: var(--tg-theme-button-text-color, #fff);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  padding: 9px 16px;
  white-space: nowrap;
}

#half-day-options {
  background: var(--tg-theme-secondary-bg-color, #f5f5f5);
  border-radius: 10px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.section-label {
  font-weight: 600;
  font-size: 13px;
  color: var(--tg-theme-hint-color, #888);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: normal;
  cursor: pointer;
}

#submit-btn {
  width: 100%;
  padding: 14px;
  background: var(--tg-theme-button-color, #2196f3);
  color: var(--tg-theme-button-text-color, #fff);
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 4px;
}

#submit-btn:active {
  opacity: 0.85;
}

#error-msg {
  background: #fdecea;
  color: #c62828;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
}

.hidden {
  display: none !important;
}