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

:root {
  --bg: #faf9f6;
  --card-bg: #ffffff;
  --primary: #4a7c59;
  --primary-hover: #3d6649;
  --accent: #e8a838;
  --danger: #c0392b;
  --text: #2c3e50;
  --text-light: #7f8c8d;
  --border: #e0ddd5;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

header {
  background: var(--primary);
  color: white;
  text-align: center;
  padding: 2rem 1rem 1.5rem;
  position: relative;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
}

.subtitle {
  opacity: 0.9;
  font-size: 1.1rem;
  margin-top: 0.25rem;
}

.locale-switcher {
  position: absolute;
  top: 1rem;
  right: 1rem;
}

.locale-switcher select {
  padding: 0.35rem 0.7rem;
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 8px;
  background: rgba(255,255,255,0.15);
  color: white;
  font-size: 0.9rem;
  cursor: pointer;
}

.locale-switcher select option {
  color: var(--text);
  background: white;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

/* Controls */
.controls {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}

.generate-form {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.generate-form label {
  font-weight: 600;
}

.generate-form select {
  padding: 0.5rem 1rem;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  background: white;
}

.btn {
  padding: 0.6rem 1.4rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--primary);
  color: white;
}

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

.btn-small {
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

/* Week plan cards */
.plans-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.week-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.week-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: var(--primary);
  color: white;
  cursor: pointer;
}

.week-header h2 {
  font-size: 1.2rem;
}

.week-header-actions {
  display: flex;
  gap: 0.5rem;
}

.week-body {
  padding: 1rem 1.25rem;
}

.day-row {
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

.day-row:last-child {
  border-bottom: none;
}

.day-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 0.6rem;
}

.meal-boxes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
}

.meal-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem;
  min-height: 80px;
}

.meal-box-header {
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.4rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border);
}

.meal-snack_10 .meal-box-header { color: #b7791f; }
.meal-lunch .meal-box-header { color: var(--primary); }
.meal-afternoon .meal-box-header { color: #6b46c1; }

.meal-note {
  font-weight: 400;
  font-size: 0.75rem;
  color: var(--text-light);
}

.meal-box-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.item-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

.item-tag[data-category="bread"] {
  background: #fef3e2;
  color: #b7791f;
}

.item-tag[data-category="protein"] {
  background: #fee2e2;
  color: #991b1b;
}

.item-tag[data-category="vegetable"] {
  background: #d1fae5;
  color: #065f46;
}

.item-tag[data-category="fruit"] {
  background: #ede9fe;
  color: #5b21b6;
}

.item-tag[data-category="snack"] {
  background: #fef9c3;
  color: #854d0e;
}

.item-tag[data-category="treat"] {
  background: #6b3a2a;
  color: #fff;
}

.item-tag.off-season {
  opacity: 0.55;
  border: 1px dashed var(--text-light);
}

/* Shopping list */
.shopping-section {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-top: 1.5rem;
}

.shopping-section h2 {
  margin-bottom: 1rem;
  color: var(--primary);
}

.shopping-list {
  columns: 2;
  column-gap: 2rem;
}

.shopping-category {
  break-inside: avoid;
  margin-bottom: 1rem;
}

.shopping-category h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  margin-bottom: 0.3rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.2rem;
}

.shopping-category ul {
  list-style: none;
  padding: 0;
}

.shopping-category li {
  padding: 0.3rem 0;
  font-size: 0.95rem;
  transition: opacity 0.2s;
}

.shopping-category li label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.shopping-category li input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

.shopping-category li.checked span {
  text-decoration: line-through;
  opacity: 0.5;
}

.shopping-days {
  color: var(--text-light);
  font-size: 0.8rem;
}

/* Loading state */
.loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-light);
}

.spinner {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-light);
}

.empty-state p {
  font-size: 1.1rem;
  margin-top: 0.5rem;
}

/* Responsive */
@media (max-width: 600px) {
  header {
    padding: 1.25rem 0.75rem 1rem;
  }

  header h1 {
    font-size: 1.3rem;
  }

  .subtitle {
    font-size: 0.9rem;
  }

  .locale-switcher {
    position: static;
    margin-top: 0.6rem;
    text-align: center;
  }

  .locale-switcher select {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
  }

  main {
    padding: 0.75rem 0.4rem;
  }

  .controls {
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 1rem;
  }

  .generate-form {
    flex-direction: column;
    align-items: stretch;
    gap: 0.6rem;
  }

  .generate-form label {
    font-size: 0.95rem;
  }

  .generate-form select {
    width: 100%;
    padding: 0.6rem 1rem;
    font-size: 1rem;
  }

  .btn {
    width: 100%;
    text-align: center;
    padding: 0.7rem 1rem;
    min-height: 44px;
    font-size: 0.95rem;
  }

  .plans-container {
    gap: 1rem;
  }

  .week-card {
    border-radius: 8px;
  }

  .week-header {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.4rem;
    padding: 0.7rem 0.75rem;
    align-items: center;
  }

  .week-header h2 {
    font-size: 1rem;
    flex: 1;
    min-width: 0;
  }

  .week-header-actions {
    display: flex;
    gap: 0.4rem;
    flex-shrink: 0;
  }

  .week-header-actions .btn {
    width: auto;
    min-width: 44px;
    min-height: 36px;
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
  }

  .week-body {
    padding: 0.5rem 0.6rem;
  }

  .week-body.collapsed {
    display: none;
  }

  .day-row {
    padding: 0.6rem 0;
  }

  .day-name {
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
  }

  .meal-boxes {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .meal-box {
    padding: 0.5rem;
    min-height: auto;
    border-radius: 6px;
  }

  .meal-box-header {
    font-size: 0.8rem;
    margin-bottom: 0.3rem;
    padding-bottom: 0.2rem;
  }

  .meal-note {
    font-size: 0.7rem;
  }

  .meal-box-items {
    gap: 0.25rem;
  }

  .item-tag {
    font-size: 0.78rem;
    padding: 0.2rem 0.5rem;
    border-radius: 16px;
  }

  .shopping-section {
    padding: 0.75rem;
    margin-top: 1rem;
    border-radius: 8px;
  }

  .shopping-section h2 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
  }

  .shopping-list {
    columns: 1;
  }

  .shopping-category li {
    padding: 0.4rem 0;
    font-size: 0.9rem;
  }

  .shopping-category li label {
    gap: 0.6rem;
    min-height: 40px;
    align-items: center;
  }

  .shopping-category li input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
  }

  .shopping-days {
    font-size: 0.75rem;
    display: block;
    margin-top: 0.1rem;
  }

  .empty-state {
    padding: 2rem 0.5rem;
  }

  .empty-state p {
    font-size: 1rem;
  }
}

@media (min-width: 601px) and (max-width: 900px) {
  .meal-boxes {
    grid-template-columns: repeat(2, 1fr);
  }

  .shopping-list {
    columns: 2;
  }
}