/* ============================================================
   TRAVEL PLANNER — COMPONENTS
   All values reference tokens.css only. No hardcoded values.
   Naming: BEM (block__element--modifier)
   ============================================================ */

/* ----------------------------------------------------------
   BUTTON
---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  font-family: var(--font-family-base);
  font-size: var(--font-size-label-md);
  font-weight: var(--font-weight-label-md);
  letter-spacing: var(--letter-spacing-label-md);
  line-height: 1;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-default);
  border: none;
  cursor: pointer;
  transition: opacity 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}
.btn--primary {
  background-color: var(--color-primary-container); /* #5850ec */
  color: var(--color-on-primary);
}
.btn--primary:hover  { opacity: 0.9; box-shadow: var(--shadow-card); }
.btn--primary:active { opacity: 0.8; }

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-outline-variant);
}
.btn--secondary:hover { background-color: var(--color-surface-container-low); }

.btn--ghost {
  background-color: transparent;
  color: var(--color-on-surface-variant);
}
.btn--ghost:hover { background-color: var(--color-surface-container); }

.btn--sm {
  font-size: var(--font-size-label-sm);
  padding: var(--space-base) var(--space-xs);
}
.btn--lg {
  font-size: var(--font-size-body-md);
  padding: var(--space-sm) var(--space-md);
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ----------------------------------------------------------
   INPUT & SELECT
---------------------------------------------------------- */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-base);
}
.input-group__label {
  font-size: var(--font-size-label-md);
  font-weight: var(--font-weight-label-md);
  color: var(--color-on-surface-variant);
  letter-spacing: var(--letter-spacing-label-md);
}
.input-group__field {
  font-family: var(--font-family-base);
  font-size: var(--font-size-body-md);
  color: var(--color-on-surface);
  background-color: var(--color-surface-container-low);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-default);
  padding: var(--space-xs) var(--space-sm);
  width: 100%;
  outline: none;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.input-group__field:focus {
  border-color: var(--color-primary);
  background-color: var(--color-input-fill);
}
.input-group__field::placeholder {
  color: var(--color-outline);
}
.input-group__field--error {
  border-color: var(--color-error);
}
.input-group__hint {
  font-size: var(--font-size-label-sm);
  color: var(--color-outline);
}
.input-group__hint--error {
  color: var(--color-error);
}

/* ----------------------------------------------------------
   CARD — Base
---------------------------------------------------------- */
.card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--layout-card-safe-area);
}
.card--flat {
  box-shadow: none;
  border: 1px solid var(--color-outline-variant);
}
.card--overlay {
  box-shadow: var(--shadow-overlay);
}

/* ----------------------------------------------------------
   CARD — Itinerary Day card
---------------------------------------------------------- */
.day-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.day-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--layout-card-safe-area);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface-container-low);
}
.day-card__title {
  font-size: var(--font-size-headline-sm);
  font-weight: var(--font-weight-headline-sm);
  color: var(--color-on-surface);
}
.day-card__body {
  padding: var(--layout-card-safe-area);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.day-card__divider {
  height: 1px;
  background-color: var(--color-border);
  margin: var(--space-xs) 0;
}
.day-card__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-xs) 0;
}

/* ----------------------------------------------------------
   SEGMENTED CONTROL (Manual / AI toggle)
---------------------------------------------------------- */
.segmented {
  display: inline-flex;
  background-color: var(--color-surface-container);
  border-radius: var(--radius-full);
  padding: var(--space-base);
  gap: var(--space-base);
}
.segmented__option {
  font-family: var(--font-family-base);
  font-size: var(--font-size-label-md);
  font-weight: var(--font-weight-label-md);
  color: var(--color-on-surface-variant);
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  padding: var(--space-base) var(--space-sm);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}
.segmented__option--active {
  background-color: var(--color-primary-container);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-card);
}

/* ----------------------------------------------------------
   STATUS BADGE
---------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-base);
  font-size: var(--font-size-label-sm);
  font-weight: var(--font-weight-label-md);
  padding: var(--space-base) var(--space-xs);
  border-radius: var(--radius-full);
  line-height: 1;
}
.badge--success {
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
}
.badge--error {
  background-color: var(--color-error-container);
  color: var(--color-on-error-container);
}
.badge--warning {
  background-color: var(--color-tertiary-container);
  color: var(--color-on-tertiary-container);
}
.badge--info {
  background-color: var(--color-primary-fixed);
  color: var(--color-on-primary-fixed);
}

/* ----------------------------------------------------------
   TOAST NOTIFICATION
---------------------------------------------------------- */
.toast {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--layout-card-safe-area);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-overlay);
  font-size: var(--font-size-body-md);
  min-width: 280px;
  max-width: 420px;
}
.toast--success {
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  border-left: 4px solid var(--color-secondary);
}
.toast--error {
  background-color: var(--color-error-container);
  color: var(--color-on-error-container);
  border-left: 4px solid var(--color-error);
}
.toast--warning {
  background-color: var(--color-tertiary-fixed);
  color: var(--color-on-tertiary-fixed);
  border-left: 4px solid var(--color-tertiary);
}

/* ----------------------------------------------------------
   PAGE LAYOUT — Itinerary split-pane
---------------------------------------------------------- */
.page-layout {
  min-height: 100vh;
  background-color: var(--color-canvas);
}
.page-layout__main {
  width: 100%;
  max-width: var(--layout-container-max);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-gutter);
}
.itinerary-pane {
  /* 2/3 + 1/3 split — see .split-pane in utilities.css */
}
.itinerary-pane__timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.itinerary-pane__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

@media (max-width: 768px) {
  .page-layout__main {
    padding: var(--space-sm) var(--space-margin-mobile);
  }
}