:root {
  --bg: #f6f7fb;
  --card-bg: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --accent: #f59e0b;
  --border: #e5e7eb;
  --success: #16a34a;
  --radius: 14px;
  font-family: "Hiragino Sans", "Yu Gothic", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.app-header {
  text-align: center;
  margin-bottom: 24px;
}

.app-header h1 {
  font-size: 28px;
  margin: 0 0 4px;
}

.subtitle {
  color: var(--muted);
  margin: 0;
  font-size: 14px;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
}

.card h2 {
  font-size: 17px;
  margin: 0 0 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 18px;
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

.form-grid input,
.form-grid select {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  color: var(--text);
  background: #fff;
}

.form-grid input:focus,
.form-grid select:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

.primary-btn {
  width: 100%;
  padding: 13px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
}

.primary-btn:hover { background: var(--primary-dark); }

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.summary-item {
  background: #f0f4ff;
  border-radius: 10px;
  padding: 14px;
}

.summary-item .label {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}

.summary-item .value {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
}

.summary-item.highlight {
  background: #fff7ed;
}
.summary-item.highlight .value {
  color: var(--accent);
}

.itinerary-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.day-block {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}

.day-block .day-title {
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--primary-dark);
}

.day-block textarea {
  width: 100%;
  min-height: 54px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13px;
  resize: vertical;
  font-family: inherit;
}

.checklist-add {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.checklist-add input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
}

.checklist-add button {
  padding: 10px 16px;
  border: none;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

.checklist-items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.checklist-items li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  background: #f9fafb;
  font-size: 14px;
}

.checklist-items li.checked {
  color: var(--muted);
  text-decoration: line-through;
}

.checklist-items li input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--success);
  cursor: pointer;
}

.checklist-items li .item-text {
  flex: 1;
  cursor: pointer;
}

.checklist-items li .remove-btn {
  border: none;
  background: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 2px 6px;
}

.checklist-items li .remove-btn:hover { color: #dc2626; }

.checklist-progress {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.app-footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  margin-top: 24px;
}

@media (max-width: 480px) {
  .form-grid { grid-template-columns: 1fr; }
  .summary-grid { grid-template-columns: 1fr; }
}