:root {
  --color-primary: #8B4513;
  --color-primary-light: #c69c6d;
  --color-bg: #fbf7f2;
  --color-card: #ffffff;
  --color-text: #2a2118;
  --color-muted: #7a6a58;
  --color-border: #e7ddd0;
  --color-error: #b3261e;
  --radius: 12px;
  --shadow: 0 2px 8px rgba(60, 40, 20, 0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
[hidden] { display: none !important; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--color-primary);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}
.header h1 { margin: 0; font-size: 18px; }

.cart-badge button {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 14px;
  cursor: pointer;
}

main {
  padding: 16px;
  max-width: 720px;
  margin: 0 auto;
}

.step h2 { font-size: 18px; margin: 8px 0 16px; }

.calendar {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow);
}
.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.calendar-header span {
  font-weight: bold;
  font-size: 16px;
}
.cal-nav {
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 999px;
  font-size: 20px;
  cursor: pointer;
  color: var(--color-primary);
}
.cal-nav:disabled { opacity: 0.3; cursor: not-allowed; }
.weekday-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 6px;
}
.weekday-header span {
  text-align: center;
  font-size: 12px;
  color: var(--color-muted);
  padding: 4px 0;
  font-weight: bold;
}
.weekday-header span.sun { color: #c0504d; }
.weekday-header span.sat { color: #4a72b8; }
.date-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}
.date-cell {
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  font-size: 14px;
  color: var(--color-text);
  user-select: none;
}
.date-cell:not(.disabled):not(.empty):hover {
  border-color: var(--color-primary);
  background: #fff7ee;
}
.date-cell .day-num { font-weight: bold; font-size: 16px; }
.date-cell .day-tag { font-size: 10px; color: var(--color-muted); margin-top: 2px; }
.date-cell.empty {
  background: transparent;
  border-color: transparent;
  cursor: default;
}
.date-cell.other-month {
  color: #c8c0b1;
  background: #faf6ef;
  cursor: not-allowed;
}
.date-cell.disabled {
  background: #f0ebe2;
  color: #b9ad9c;
  cursor: not-allowed;
}
.date-cell.closed .day-tag { color: #b9ad9c; }
.date-cell.sun:not(.disabled):not(.other-month) { color: #c0504d; }
.date-cell.sat:not(.disabled):not(.other-month) { color: #4a72b8; }

.hint { color: var(--color-muted); font-size: 13px; }

.selected-date {
  background: var(--color-card);
  padding: 10px 14px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
}

.category-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 12px;
}
.category-tabs button {
  flex-shrink: 0;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
  font-size: 14px;
}
.category-tabs button.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.item-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
@media (min-width: 600px) {
  .item-grid { grid-template-columns: repeat(3, 1fr); }
}
.item-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  cursor: pointer;
}
.item-card.sold-out { opacity: 0.5; cursor: not-allowed; }
.item-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #eee;
}
.item-card .item-body { padding: 8px 10px; }
.item-card .item-name { font-weight: bold; font-size: 14px; margin: 0; }
.item-card .item-price { color: var(--color-primary); font-weight: bold; margin: 4px 0 0; }
.item-card .item-stock { font-size: 11px; color: var(--color-error); margin: 2px 0 0; }

.cart-list, #cart-modal-list {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 8px 0;
  margin-bottom: 12px;
}
.cart-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  padding: 8px 14px;
  gap: 12px;
}
.cart-row + .cart-row { border-top: 1px solid var(--color-border); }
.cart-row .qty-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}
.cart-row .qty-controls button {
  width: 28px; height: 28px;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
}
.cart-row .qty-controls input { width: 36px; text-align: center; border: 1px solid var(--color-border); border-radius: 6px; }
.cart-row .remove { background: none; border: none; color: var(--color-error); cursor: pointer; }

.cart-total { text-align: right; font-size: 16px; margin: 12px 0; }
.cart-total strong { color: var(--color-primary); font-size: 20px; }

.field {
  display: block;
  margin-bottom: 14px;
}
.field span {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
  color: var(--color-muted);
}
.field span em { color: var(--color-error); font-style: normal; font-size: 11px; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 16px;
  background: var(--color-card);
}

.actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
button.primary {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: bold;
  cursor: pointer;
  flex: 1;
}
button.primary:disabled { opacity: 0.5; cursor: wait; }
button.ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 15px;
  cursor: pointer;
  flex: 1;
}

.error { color: var(--color-error); font-size: 14px; margin-top: 8px; }

.modal {
  border: none;
  border-radius: 16px;
  padding: 20px;
  max-width: 420px;
  width: calc(100% - 32px);
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}
.modal::backdrop { background: rgba(0, 0, 0, 0.4); }
.modal img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 8px; }
.modal h3 { margin: 12px 0 4px; }
.modal-price { color: var(--color-primary); font-weight: bold; font-size: 20px; }
.modal-stock { color: var(--color-error); font-size: 12px; }
.modal-close {
  position: absolute;
  top: 8px; right: 12px;
  background: rgba(0,0,0,0.05);
  border: none;
  width: 32px; height: 32px;
  border-radius: 999px;
  font-size: 20px;
  cursor: pointer;
}
.quantity-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 14px 0;
}
.quantity-row button {
  width: 40px; height: 40px;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 999px;
  font-size: 20px;
  cursor: pointer;
}
.quantity-row input {
  width: 60px;
  height: 40px;
  text-align: center;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 18px;
}

.loading {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--color-primary);
  z-index: 100;
}