/* ── Design tokens ─────────────────────────────────────────────────────────── */
:root {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-text: #111827;
  --color-muted: #6b7280;
  --color-primary: #1d4ed8;
  --color-primary-hover: #1e40af;
  --color-primary-contrast: #ffffff;
  --color-border: #e5e7eb;
  --color-nav-bg: #0f172a;
  --color-cta: #0ea5e9;
  --color-cta-hover: #0284c7;

  --radius: 6px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.18);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --space-6: 64px;

  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;

  --header-height: 64px;
  --max-width: 1280px;
}

/* ── Reset ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; font-family: inherit; font-size: inherit; border: none; background: none; }
a { text-decoration: none; color: inherit; }

/* ── Header ────────────────────────────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-nav-bg);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo-img {
  height: 28px;
  width: auto;
  display: block;
}
.shop-name {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-2);
  padding-left: var(--space-4);
  margin-left: var(--space-4);
  border-left: 1px solid rgba(255,255,255,0.6);
  flex-shrink: 0;
}
.daehlie-logo-img {
  height: 28px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
}
.shop-name-text {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: #ffffff;
  white-space: nowrap;
}
.nav { display: flex; align-items: center; gap: 2px; }
.nav-link {
  color: rgba(255,255,255,0.75);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.08); }
.header-actions { display: flex; align-items: center; gap: var(--space-3); margin-left: auto; }

.cart-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: rgba(255,255,255,0.75);
  border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
}
.cart-btn:hover { color: #fff; background: rgba(255,255,255,0.08); }
.cart-icon { width: 22px; height: 22px; }
.cart-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 18px;
  height: 18px;
  background: var(--color-cta);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  border-radius: 99px;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  line-height: 1;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background 0.15s, box-shadow 0.15s;
  white-space: nowrap;
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--color-primary); color: var(--color-primary-contrast); }
.btn-primary:hover { background: var(--color-primary-hover); box-shadow: 0 2px 8px rgba(29,78,216,0.3); }
.btn-cta { background: var(--color-cta); color: #fff; font-weight: 600; }
.btn-cta:hover { background: var(--color-cta-hover); box-shadow: 0 2px 8px rgba(14,165,233,0.4); }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: var(--color-primary-contrast); }
.btn-full { width: 100%; }

/* ── Main / Collection ─────────────────────────────────────────────────────── */
.main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-5) var(--space-5) var(--space-6);
}
.collection-header { margin-bottom: var(--space-4); }
.collection-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

/* ── Filter bar ────────────────────────────────────────────────────────────── */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.category-tabs { display: flex; gap: var(--space-1); }
.tab {
  padding: 8px 18px;
  border-radius: 99px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-muted);
  background: transparent;
  border: 1.5px solid transparent;
  transition: all 0.15s;
}
.tab:hover { color: var(--color-text); border-color: var(--color-border); }
.tab.active {
  color: var(--color-text);
  background: var(--color-surface);
  border-color: var(--color-border);
  box-shadow: var(--shadow);
  font-weight: 600;
}
.filter-controls { display: flex; gap: var(--space-2); align-items: center; }
.filter-select {
  padding: 8px 32px 8px 12px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-family: var(--font-sans);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 16px;
  transition: border-color 0.15s;
}
.filter-select:focus { outline: none; border-color: var(--color-primary); }

/* ── Product grid ──────────────────────────────────────────────────────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

/* ── Product card ──────────────────────────────────────────────────────────── */
.product-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.2s;
}
.product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product-card:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.product-card-img-wrap { aspect-ratio: 3/4; overflow: hidden; background: #eaecf0; }
.product-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.product-card:hover .product-card-img { transform: scale(1.04); }
.product-card-body {
  padding: var(--space-3);
  border-top: 1px solid var(--color-border);
}
.product-card-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.product-card-price {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.product-card-view {
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-muted);
  letter-spacing: 0.03em;
}
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-6) var(--space-4);
  color: var(--color-muted);
  font-size: var(--font-size-lg);
}

/* ── Modal ─────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.6);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }
.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}
.modal-close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-muted);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: background 0.15s, color 0.15s;
}
.modal-close:hover { background: var(--color-border); color: var(--color-text); }
.modal-inner { display: grid; grid-template-columns: 1fr 1fr; }
.modal-img-col { background: #eaecf0; border-radius: var(--radius-lg) 0 0 var(--radius-lg); overflow: hidden; }
.modal-img { width: 100%; height: 100%; min-height: 400px; object-fit: cover; display: block; }
.modal-detail-col {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.modal-category {
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.modal-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.modal-price { font-size: var(--font-size-xl); font-weight: 700; color: var(--color-text); }
.modal-color { font-size: var(--font-size-sm); color: var(--color-muted); }
.modal-description { font-size: var(--font-size-sm); color: var(--color-muted); line-height: 1.7; }

/* ── Size selector ─────────────────────────────────────────────────────────── */
.size-label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-2);
}
.size-options { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.size-btn {
  min-width: 44px;
  height: 44px;
  padding: 0 var(--space-2);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  background: transparent;
  transition: all 0.15s;
}
.size-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.size-btn.selected {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-primary-contrast);
}
.modal-actions { display: flex; flex-direction: column; gap: var(--space-2); margin-top: auto; padding-top: var(--space-2); }

/* ── Cart overlay ──────────────────────────────────────────────────────────── */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.5);
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.cart-overlay.open { opacity: 1; pointer-events: auto; }

/* ── Cart drawer ───────────────────────────────────────────────────────────── */
.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 420px;
  height: 100%;
  background: var(--color-surface);
  box-shadow: -4px 0 32px rgba(0,0,0,0.12);
  z-index: 200;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.cart-drawer.open { transform: translateX(0); }
.cart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.cart-title { font-size: var(--font-size-lg); font-weight: 700; color: var(--color-text); }
.cart-close-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: background 0.15s, color 0.15s;
}
.cart-close-btn:hover { background: var(--color-border); color: var(--color-text); }
.cart-items { flex: 1; overflow-y: auto; padding: var(--space-2) var(--space-4); }
.cart-empty {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  color: var(--color-muted);
  font-size: var(--font-size-base);
}
.cart-item {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}
.cart-item-img {
  width: 64px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius);
  background: #eaecf0;
}
.cart-item-info { min-width: 0; }
.cart-item-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
}
.cart-item-size { font-size: var(--font-size-xs); color: var(--color-muted); margin-bottom: var(--space-2); }
.cart-item-line-total { font-size: var(--font-size-sm); font-weight: 700; }
.cart-item-controls {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-1);
}
.qty-btn {
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-base);
  color: var(--color-text);
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  background: transparent;
}
.qty-btn:hover { border-color: var(--color-primary); color: var(--color-primary); background: rgba(29,78,216,0.05); }
.qty-value { font-size: var(--font-size-sm); font-weight: 600; min-width: 20px; text-align: center; }
.remove-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  font-size: 13px;
  transition: color 0.15s, background 0.15s;
  background: transparent;
}
.remove-btn:hover { color: #ef4444; background: rgba(239,68,68,0.08); }
.cart-footer { padding: var(--space-4); border-top: 1px solid var(--color-border); flex-shrink: 0; }
.cart-total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
  font-size: var(--font-size-base);
}
.cart-total-amount { font-size: var(--font-size-xl); font-weight: 700; }

/* ── Checkout form ─────────────────────────────────────────────────────────── */
.checkout-form-wrap { padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-3); flex: 1; overflow-y: auto; }
.checkout-intro { font-size: var(--font-size-sm); color: var(--color-muted); }
.checkout-form { display: flex; flex-direction: column; gap: var(--space-3); }
.form-field { display: flex; flex-direction: column; gap: var(--space-1); }
.form-label { font-size: var(--font-size-xs); font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-muted); }
.form-input {
  padding: 10px var(--space-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.15s;
}
.form-input:focus { outline: none; border-color: var(--color-primary); }
.form-input::placeholder { color: var(--color-muted); }
.form-error { font-size: var(--font-size-xs); color: #ef4444; min-height: 16px; }
.checkout-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3);
  background: var(--color-bg);
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  border: 1px solid var(--color-border);
}
.checkout-total { font-size: var(--font-size-base); font-weight: 700; color: var(--color-text); }

/* ── Order confirmation ────────────────────────────────────────────────────── */
.order-confirmation {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-4);
}
.order-check {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #dcfce7;
  color: #16a34a;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.order-confirmation h3 { font-size: var(--font-size-xl); font-weight: 700; }
.order-number {
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-bg);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  letter-spacing: 0.05em;
}
.order-note { font-size: var(--font-size-sm); color: var(--color-muted); }

/* ── Toast ─────────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #1f2937;
  color: #fff;
  padding: 10px var(--space-4);
  border-radius: 99px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  z-index: 500;
  opacity: 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
  pointer-events: none;
  white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ── Scroll lock ───────────────────────────────────────────────────────────── */
body.modal-open,
body.cart-open { overflow: hidden; }

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 1200px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 960px) {
  .header-inner { padding: 0 var(--space-4); }
  .main { padding: var(--space-4) var(--space-4) var(--space-5); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .collection-title { font-size: var(--font-size-2xl); }
  .modal-inner { grid-template-columns: 1fr; }
  .modal-img-col { border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
  .modal-img { min-height: 260px; max-height: 300px; }
  .modal-detail-col { padding: var(--space-4); }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .btn-cta { display: none; }
  .filter-bar { flex-direction: column; align-items: flex-start; gap: var(--space-2); }
  .filter-controls { width: 100%; }
  .filter-select { flex: 1; min-width: 0; }

  .cart-drawer {
    width: 100%;
    height: 88vh;
    top: auto;
    bottom: 0;
    right: 0;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    transform: translateY(100%);
  }
  .cart-drawer.open { transform: translateY(0); }
}

@media (max-width: 480px) {
  .modal-overlay { align-items: flex-end; padding: 0; }
  .modal { border-radius: var(--radius-lg) var(--radius-lg) 0 0; max-height: 95vh; }
  .product-grid { gap: var(--space-3); }
}

@media (max-width: 360px) {
  .product-grid { grid-template-columns: 1fr; }
}