/* ===== Material 3 Base Variables ===== */
:root {
  --m3-color-primary: #6750A4;
  --m3-color-on-primary: #FFFFFF;
  --m3-color-surface: #FFFFFF;
  --m3-color-surface-variant: #F3EDF7;
  --m3-color-outline: #79747E;
  --m3-color-on-surface: #1C1B1F;
  --m3-color-secondary: #625B71;
  --m3-color-error: #B3261E;

  --m3-radius: 12px;
  --m3-spacing: 1rem;
  --m3-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
  --m3-font: "Roboto", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

/* ===== Itinerary Card ===== */
.itinerary-card {
  background: var(--m3-color-surface);
  border-radius: var(--m3-radius);
  padding: calc(var(--m3-spacing) * 1.5);
  margin: var(--m3-spacing) auto;
  box-shadow: var(--m3-shadow);
  font-family: var(--m3-font);
  max-width: 900px;
}

.itinerary-card.m3-elevated {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* ===== Typography ===== */
.itinerary-title {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: var(--m3-spacing);
  color: var(--m3-color-on-surface);
}

.itinerary-content {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--m3-color-on-surface);
}

/* ===== Meta Chips ===== */
.itinerary-meta {
  margin-bottom: var(--m3-spacing);
}

.meta-chip {
  display: inline-block;
  background: var(--m3-color-surface-variant);
  color: var(--m3-color-on-surface);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 500;
  margin-right: 0.5rem;
}

/* ===== Buttons ===== */
.m3-button {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: var(--m3-radius);
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease;
}

.m3-button.primary {
  background: var(--m3-color-primary);
  color: var(--m3-color-on-primary);
}

.m3-button.primary:hover {
  background: #5b4498;
}

.m3-button.secondary {
  background: var(--m3-color-surface-variant);
  color: var(--m3-color-on-surface);
}

.m3-button.secondary:hover {
  background: #e6e0eb;
}

/* ===== Day-by-Day Accordion ===== */
.itinerary-days {
  margin-top: calc(var(--m3-spacing) * 2);
}

.itinerary-day {
  border: 1px solid var(--m3-color-outline);
  border-radius: var(--m3-radius);
  margin-bottom: 1rem;
  overflow: hidden;
  background: var(--m3-color-surface-variant);
}

.itinerary-day summary {
  cursor: pointer;
  padding: 1rem 1.2rem;
  font-weight: 600;
  color: var(--m3-color-on-surface);
  background: var(--m3-color-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.itinerary-day summary::after {
  content: "▾";
  font-size: 1rem;
  transition: transform 0.2s ease;
}

.itinerary-day[open] summary::after {
  transform: rotate(180deg);
}

.itinerary-day-content {
  padding: 1rem 1.2rem;
  font-size: 0.95rem;
  line-height: 1.6;
  background: var(--m3-color-surface-variant);
  color: var(--m3-color-on-surface);
}

.itinerary-day-content img {
  margin-top: 0.8rem;
  max-width: 100%;
  border-radius: var(--m3-radius);
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .itinerary-card {
    padding: var(--m3-spacing);
  }

  .itinerary-title {
    font-size: 1.4rem;
  }

  .itinerary-day summary {
    font-size: 0.95rem;
  }
}