/* ============================================
   Common / Utility Styles
   ============================================ */

/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.container-fluid {
  width: 100%;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* Section */
.section {
  width: 100%;
}

/* Typography Utilities */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-md { font-size: var(--font-size-md); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-4xl { font-size: var(--font-size-4xl); }

.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-light { color: var(--color-text-light); }
.text-accent { color: var(--color-accent); }

/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

/* Grid Utilities */
.grid { display: grid; }

/* Spacing Utilities */
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-light);
}

.btn-primary:hover {
  background-color: #333333;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text-light);
  border: 1px solid var(--color-text-light);
}

.btn-outline:hover {
  background-color: var(--color-text-light);
  color: var(--color-primary);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: var(--font-size-base);
}

/* Section Title */
.section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-sm);
}

/* Slider Navigation Arrows */
.slider-arrow {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: opacity var(--transition-fast);
  background: none;
  box-shadow: none;
  border: none;
  z-index: 10;
}

.slider-arrow:hover {
  opacity: 0.6;
}

.slider-arrow svg {
  width: 52px;
  height: 52px;
  stroke: #fff;
  stroke-width: 2.5;
  fill: none;
}

.slider-arrow--dark svg {
  stroke: var(--color-text-light);
}

/* Star Rating */
.star-rating {
  display: flex;
  gap: 2px;
}

.star-rating svg {
  width: 14px;
  height: 14px;
}

.star-rating .star-filled {
  fill: var(--color-primary);
}

.star-rating .star-empty {
  fill: var(--color-border);
}

/* Color Swatches */
.color-swatches {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.color-swatch {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--transition-fast);
}

.color-swatch:hover,
.color-swatch.active {
  border-color: var(--color-primary);
}

/* Image hover zoom */
.img-zoom {
  overflow: hidden;
}

.img-zoom img {
  transition: transform var(--transition-slow);
}

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

/* Link underline effect */
.link-underline {
  position: relative;
}

.link-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: currentColor;
  transition: width var(--transition-base);
}

.link-underline:hover::after {
  width: 100%;
}

/* Hide scrollbar but keep functionality */
.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

/* Full width */
.w-full { width: 100%; }

/* Text alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }