:root {
  --primary: #ee4d2d;
  --primary-dark: #d93a1c;
  --primary-light: #ff6a3d;
  --dark: #1b1b1b;
  --text: #333;
  --muted: #6b6b6b;
  --bg: #f6f6f6;
  --card-bg: #ffffff;
  --border: #e6e6e6;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 14px 34px rgba(238, 77, 45, 0.22);
  --radius: 16px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============ HEADER ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header.scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  color: var(--primary);
  font-size: 1.05rem;
  white-space: nowrap;
}

.brand-icon {
  font-size: 1.35rem;
  line-height: 1;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.main-nav a:not(.btn-nav) {
  font-weight: 600;
  color: var(--text);
  transition: color 0.2s ease;
  white-space: nowrap;
}

.main-nav a:not(.btn-nav):hover {
  color: var(--primary);
}

.btn-nav,
.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: 999px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow: 0 4px 14px rgba(238, 77, 45, 0.35);
  white-space: nowrap;
}

.btn-nav:hover,
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(238, 77, 45, 0.45);
  filter: brightness(1.05);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
}

.menu-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ============ HERO ============ */
.hero {
  background: linear-gradient(135deg, #ff8a50 0%, var(--primary) 55%, var(--primary-dark) 100%);
  color: #fff;
  text-align: center;
  padding: 80px 0 90px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "🛒";
  position: absolute;
  font-size: 180px;
  opacity: 0.08;
  top: -20px;
  right: -30px;
  transform: rotate(15deg);
  line-height: 1;
}

.hero::after {
  content: "✨";
  position: absolute;
  font-size: 120px;
  opacity: 0.08;
  bottom: -30px;
  left: -20px;
  transform: rotate(-15deg);
  line-height: 1;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero h1 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.hero p {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  opacity: 0.95;
  margin-bottom: 30px;
}

.btn-hero {
  background: #fff;
  color: var(--primary);
  font-size: 1.05rem;
  padding: 14px 32px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.btn-hero:hover {
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
  filter: brightness(1);
  transform: translateY(-3px);
}

/* ============ FILTERS ============ */
.filters {
  padding: 28px 0 8px;
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.filter-btn {
  background: #fff;
  border: 2px solid var(--border);
  color: var(--text);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 18px;
  border-radius: 999px;
  transition: all 0.25s ease;
}

.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 14px rgba(238, 77, 45, 0.35);
}

.filter-count {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 14px;
}

/* ============ CATEGORY SECTIONS ============ */
.category-section {
  padding: 30px 0 10px;
}

.category-section h2 {
  font-size: clamp(1.35rem, 3.5vw, 1.8rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.section-desc {
  color: var(--muted);
  margin-bottom: 24px;
  max-width: 560px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* ============ PRODUCT CARD ============ */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.card-img-wrap {
  background: #f0f0f0;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  position: relative;
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.card:hover .card-img {
  transform: scale(1.05);
}

.card-body {
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 12px;
}

.card-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: calc(0.92rem * 1.35 * 3);
  flex: 1;
}

.card-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 11px 14px;
  border-radius: 12px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow: 0 4px 12px rgba(238, 77, 45, 0.3);
}

.card-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(238, 77, 45, 0.4);
  filter: brightness(1.05);
}

/* ============ FOOTER ============ */
.site-footer {
  background: var(--dark);
  color: #cfcfcf;
  margin-top: 50px;
  padding: 40px 0 30px;
  text-align: center;
}

.footer-brand {
  color: #fff;
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.footer-copy {
  font-size: 0.82rem;
  color: #999;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 18px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.3s ease;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .main-nav a {
    padding: 12px 8px;
    border-radius: 10px;
  }

  .main-nav a:not(.btn-nav):hover {
    background: #fff5f2;
  }

  .btn-nav {
    text-align: center;
    margin-top: 6px;
  }

  .menu-toggle.open span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
  }

  .menu-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.open span:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
  }

  .grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .card-title {
    font-size: 0.85rem;
    min-height: calc(0.85rem * 1.35 * 3);
  }

  .card-btn {
    font-size: 0.88rem;
    padding: 10px 12px;
  }

  .hero {
    padding: 60px 0 70px;
  }
}

@media (max-width: 420px) {
  .container {
    padding: 0 14px;
  }

  .grid {
    gap: 12px;
  }

  .brand-name {
    font-size: 0.95rem;
  }

  .filter-tabs {
    gap: 8px;
  }

  .filter-btn {
    font-size: 0.82rem;
    padding: 8px 14px;
  }
}