/* ========================================
   咖啡店官網 - Mobile-first RWD
   ======================================== */

:root {
  --color-primary: #5C3D2E;
  --color-primary-light: #B85C38;
  --color-secondary: #E0C097;
  --color-accent: #2D6A4F;
  --color-bg: #FDF8F0;
  --color-bg-card: #FFFFFF;
  --color-text: #2C2C2C;
  --color-text-light: #6B6B6B;
  --color-border: #E8DDD3;
  --color-success: #2D6A4F;
  --color-error: #C0392B;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --radius: 8px;
  --max-width: 1100px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary-light);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---- Header / Nav ---- */
.site-header {
  background: var(--color-primary);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.85);
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #fff;
}

.cart-link {
  position: relative;
}

.cart-badge {
  position: absolute;
  top: -8px;
  right: -12px;
  background: var(--color-primary-light);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cart-badge:empty,
.cart-badge[data-count="0"] {
  display: none;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 640px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-primary);
    flex-direction: column;
    padding: 1rem;
    gap: 1rem;
    box-shadow: var(--shadow-md);
  }

  .nav-links.open {
    display: flex;
  }
}

/* ---- Main content ---- */
main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1rem;
  width: 100%;
}

/* ---- Hero section ---- */
.hero {
  text-align: center;
  padding: 3rem 1rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  border-radius: var(--radius);
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  letter-spacing: 0.08em;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 500px;
  margin: 0 auto 1.5rem;
}

.hero .btn {
  background: #fff;
  color: var(--color-primary);
}

/* ---- About section ---- */
.about-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
  padding: 2rem 0;
}

.about-section h2 {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.about-section p {
  color: var(--color-text-light);
  line-height: 1.8;
}

.feature-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.feature-list li {
  padding: 1rem;
  background: var(--color-bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border-left: 3px solid var(--color-primary-light);
}

@media (min-width: 640px) {
  .feature-list {
    grid-template-columns: 1fr 1fr;
  }

  .hero h1 {
    font-size: 2.5rem;
  }
}

/* ---- Product Grid ---- */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 480px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.product-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, transform 0.2s;
}

.product-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.product-card .product-image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--color-border);
}

.product-card .product-info {
  padding: 1rem;
}

.product-card .product-name {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.product-card .product-desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.product-card .product-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

.product-card .product-meta .roast-tag {
  background: var(--color-secondary);
  color: var(--color-primary);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.product-card .product-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-card .product-price {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.25rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

.btn:hover {
  opacity: 0.9;
}

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

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}

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

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.cart-table {
  width: 100%;
  border-collapse: collapse;
}

.cart-table th {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 2px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.cart-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.cart-item-name {
  font-weight: 600;
}

.cart-item-meta {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.quantity-control {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.quantity-control button {
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: #fff;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.quantity-control span {
  min-width: 1.5rem;
  text-align: center;
}

.cart-remove-btn {
  background: none;
  border: none;
  color: var(--color-error);
  cursor: pointer;
  font-size: 0.85rem;
}

.cart-summary {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: var(--color-bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.cart-summary .total-row {
  display: flex;
  justify-content: space-between;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

/* Responsive cart - stack on mobile */
@media (max-width: 640px) {
  .cart-table thead {
    display: none;
  }

  .cart-table tr {
    display: flex;
    flex-wrap: wrap;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
    gap: 0.5rem;
    align-items: center;
  }

  .cart-table td {
    border: none;
    padding: 0.25rem 0.5rem;
  }

  .cart-table td:first-child {
    flex: 1 1 100%;
  }
}

/* ---- Checkout form ---- */
.checkout-section {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.checkout-section h2 {
  font-size: 1.15rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--color-text);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(92, 61, 46, 0.15);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

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

/* Payment method radio */
.payment-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.payment-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.2s;
}

.payment-option:hover {
  border-color: var(--color-primary-light);
}

.payment-option.selected {
  border-color: var(--color-primary);
  background: rgba(92, 61, 46, 0.04);
}

.payment-option input[type="radio"] {
  accent-color: var(--color-primary);
}

/* Store picker */
.store-picker-btn {
  margin-top: 0.5rem;
}

.selected-store {
  margin-top: 0.75rem;
  padding: 0.75rem;
  background: rgba(45, 106, 79, 0.06);
  border: 1px solid var(--color-accent);
  border-radius: 6px;
  font-size: 0.9rem;
}

.selected-store .store-name {
  font-weight: 600;
  color: var(--color-accent);
}

.selected-store .store-address {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

/* ---- Order complete ---- */
.order-result {
  text-align: center;
  padding: 3rem 1rem;
}

.order-result .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.order-result h1 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.order-result .order-no {
  font-size: 1.1rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.7);
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.85rem;
  margin-top: auto;
}

/* ---- Utilities ---- */
.page-title {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }

.alert {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.alert-error {
  background: rgba(192, 57, 43, 0.08);
  color: var(--color-error);
  border: 1px solid rgba(192, 57, 43, 0.2);
}

.alert-success {
  background: rgba(45, 106, 79, 0.08);
  color: var(--color-success);
  border: 1px solid rgba(45, 106, 79, 0.2);
}

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

/* ---- Admin ---- */
.admin-login {
  max-width: 360px;
  margin: 3rem auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.admin-table th {
  text-align: left;
  padding: 0.6rem;
  background: var(--color-bg);
  border-bottom: 2px solid var(--color-border);
  font-size: 0.8rem;
}

.admin-table td {
  padding: 0.6rem;
  border-bottom: 1px solid var(--color-border);
}

.admin-table tr:hover {
  background: rgba(92, 61, 46, 0.03);
}

.status-badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-pending { background: #FEF3C7; color: #92400E; }
.status-paid { background: #D1FAE5; color: #065F46; }
.status-shipped { background: #DBEAFE; color: #1E40AF; }
.status-completed { background: #E0E7FF; color: #3730A3; }
.status-cancelled { background: #FEE2E2; color: #991B1B; }