* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--tg-theme-bg-color, #ffffff);
  color: var(--tg-theme-text-color, #111111);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

#app {
  padding: 12px 12px 90px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.month-label {
  font-size: 18px;
  font-weight: 600;
}

.nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: none;
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  color: var(--tg-theme-text-color, #111);
  font-size: 20px;
  cursor: pointer;
}

.weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 12px;
  color: var(--tg-theme-hint-color, #888);
  margin-bottom: 4px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.day-cell {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--tg-theme-secondary-bg-color, #f5f5f5);
  font-size: 14px;
  position: relative;
  cursor: pointer;
}

.day-cell.empty {
  background: transparent;
  cursor: default;
}

.day-cell.today {
  outline: 2px solid var(--tg-theme-button-color, #3390ec);
}

.day-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--tg-theme-button-color, #3390ec);
  margin-top: 2px;
}

.day-dot.done {
  background: #8bc34a;
}

.settings-link {
  text-align: center;
  font-size: 12px;
  color: var(--tg-theme-hint-color, #999);
  margin-top: 18px;
  padding: 8px;
  cursor: pointer;
}

.fab {
  position: fixed;
  right: 20px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: var(--tg-theme-button-color, #3390ec);
  color: var(--tg-theme-button-text-color, #fff);
  font-size: 28px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  cursor: pointer;
}

.sheet-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: flex-end;
  z-index: 10;
}

.sheet-overlay.hidden {
  display: none;
}

.hidden {
  display: none !important;
}

.sheet {
  background: var(--tg-theme-bg-color, #fff);
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  border-radius: 16px 16px 0 0;
  padding: 8px 16px 20px;
}

.sheet-handle {
  width: 36px;
  height: 4px;
  border-radius: 2px;
  background: var(--tg-theme-hint-color, #ccc);
  margin: 6px auto 12px;
}

.sheet-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.task-item {
  background: var(--tg-theme-secondary-bg-color, #f5f5f5);
  border-radius: 10px;
  padding: 10px 12px;
}

.task-item .task-text {
  font-size: 14px;
  margin-bottom: 4px;
}

.task-item .task-meta {
  font-size: 12px;
  color: var(--tg-theme-hint-color, #888);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.task-item .status-done {
  color: #4caf50;
}

.task-item .status-pending {
  color: var(--tg-theme-hint-color, #888);
}

.delete-btn {
  border: none;
  background: none;
  color: #e53935;
  font-size: 13px;
  cursor: pointer;
}

.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--tg-theme-secondary-bg-color, #f5f5f5);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
}

.switch-row input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--tg-theme-button-color, #3390ec);
}

.empty-hint {
  font-size: 14px;
  color: var(--tg-theme-hint-color, #888);
  padding: 8px 0;
}

.field-label {
  display: block;
  font-size: 12px;
  color: var(--tg-theme-hint-color, #888);
  margin: 10px 0 4px;
}

.field {
  width: 100%;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--tg-theme-hint-color, #ddd);
  background: var(--tg-theme-bg-color, #fff);
  color: var(--tg-theme-text-color, #111);
  font-size: 14px;
}

.primary-btn {
  width: 100%;
  margin-top: 16px;
  padding: 12px;
  border-radius: 10px;
  border: none;
  background: var(--tg-theme-button-color, #3390ec);
  color: var(--tg-theme-button-text-color, #fff);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

.text-btn {
  width: 100%;
  margin-top: 8px;
  padding: 10px;
  border: none;
  background: none;
  color: var(--tg-theme-hint-color, #888);
  font-size: 14px;
  cursor: pointer;
}