/* =====================================================
   app.css — BookHaven Custom Styles
   Extends Tailwind CSS via CDN
   ===================================================== */

/* ── NAV LINKS ──────────────────────────────────────── */
.nav-link {
  position: relative;
  color: #475569; /* slate-600 */
  transition: color 0.2s;
  padding-bottom: 2px;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.25s ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* ── PRODUCT CARD ───────────────────────────────────── */
.product-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,.12);
}
.product-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.product-card:hover img {
  transform: scale(1.04);
}

/* ── BADGE ──────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.badge-discount {
  background: #FEF3C7;
  color: #92400E;
}
.badge-out-of-stock {
  background: #FEE2E2;
  color: #991B1B;
}
.badge-new {
  background: #D1FAE5;
  color: #065F46;
}
.badge-featured {
  background: var(--color-primary);
  color: #fff;
}

/* ── BUTTONS ────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-weight: 600;
  border-radius: 8px;
  padding: 10px 24px;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(30,64,175,.4);
}
.btn-secondary {
  background: #fff;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary);
  color: #fff;
}
.btn-accent {
  background: var(--color-accent);
  color: #fff;
}
.btn-accent:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}
.btn-danger {
  background: #EF4444;
  color: #fff;
}
.btn-danger:hover {
  background: #DC2626;
}
.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}
.btn-lg {
  padding: 14px 36px;
  font-size: 1rem;
}

/* ── FORM INPUTS ────────────────────────────────────── */
.form-input {
  width: 100%;
  border: 1.5px solid #E2E8F0;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.875rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #fff;
  color: #0F172A;
}
.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30,64,175,.15);
}
.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 5px;
}
.form-group {
  margin-bottom: 16px;
}

/* ── BREADCRUMB ─────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: #64748B;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
  transition: opacity 0.2s;
}
.breadcrumb a:hover { opacity: 0.75; }
.breadcrumb-sep { color: #CBD5E1; }

/* ── SECTION HEADING ────────────────────────────────── */
.section-heading {
  position: relative;
  display: inline-block;
  font-size: 1.75rem;
  font-weight: 800;
  color: #0F172A;
}
.section-heading::after {
  content: '';
  display: block;
  margin-top: 6px;
  height: 4px;
  width: 48px;
  border-radius: 999px;
  background: var(--color-accent);
}

/* ── HERO ───────────────────────────────────────────── */
.hero-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

/* ── CART TABLE ─────────────────────────────────────── */
.cart-table { width: 100%; border-collapse: collapse; }
.cart-table th {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #64748B;
  padding: 12px 16px;
  border-bottom: 1px solid #E2E8F0;
  text-align: left;
}
.cart-table td {
  padding: 16px;
  border-bottom: 1px solid #F1F5F9;
  vertical-align: middle;
}

/* ── POLICY PAGE ────────────────────────────────────── */
.policy-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #0F172A;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}
.policy-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #1E293B;
  margin-top: 1.25rem;
  margin-bottom: 0.35rem;
}
.policy-content p  { color: #475569; line-height: 1.75; margin-bottom: 0.75rem; font-size: 0.9rem; }
.policy-content ul { list-style: disc; padding-left: 1.5rem; color: #475569; font-size: 0.9rem; margin-bottom: 0.75rem; }
.policy-content ul li { margin-bottom: 0.3rem; }

/* ── STAR RATING ────────────────────────────────────── */
.stars { color: #F59E0B; letter-spacing: 2px; }

/* ── SKELETON PLACEHOLDER (for JS-filtered items) ───── */
.skeleton {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── QUANTITY INPUT ─────────────────────────────────── */
.qty-input {
  width: 56px;
  text-align: center;
  border: 1.5px solid #E2E8F0;
  border-radius: 6px;
  padding: 6px;
  font-size: 0.9rem;
  font-weight: 600;
}
.qty-input:focus { outline: none; border-color: var(--color-primary); }

/* ── STEP INDICATOR (checkout) ──────────────────────── */
.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.step-circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  background: #E2E8F0;
  color: #94A3B8;
  transition: all 0.3s;
}
.step.active .step-circle {
  background: var(--color-primary);
  color: #fff;
}
.step.done .step-circle {
  background: #22C55E;
  color: #fff;
}
.step-line {
  flex: 1;
  height: 2px;
  background: #E2E8F0;
  margin-bottom: 20px;
}
.step-line.done { background: #22C55E; }

/* ── FAQ ACCORDION ──────────────────────────────────── */
.faq-item { border-bottom: 1px solid #E2E8F0; }
.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 0;
  font-weight: 600;
  font-size: 0.95rem;
  color: #0F172A;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-answer {
  display: none;
  padding-bottom: 16px;
  color: #475569;
  font-size: 0.875rem;
  line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-icon { transition: transform 0.3s; font-size: 1.25rem; color: var(--color-primary); }

/* ── CATEGORY PILL ──────────────────────────────────── */
.cat-pill {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1.5px solid #E2E8F0;
  color: #475569;
  cursor: pointer;
  transition: all 0.2s;
  background: #fff;
}
.cat-pill:hover,
.cat-pill.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* ── MISC UTILITIES ─────────────────────────────────── */
.text-primary   { color: var(--color-primary); }
.text-accent    { color: var(--color-accent); }
.bg-primary     { background: var(--color-primary); }
.line-through-price { text-decoration: line-through; color: #94A3B8; }