/* ====================================================
   DESIGN SYSTEM - TELA TIKTOK SHOP
   ==================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  --color-primary: #FF6600;
  --color-action: #FF4081;
  --color-accent: #FFEB3B;
  --color-bg: #FFFFFF;
  --color-divider: #EEEEEE;
  --color-text: #000000;
  --color-text-secondary: #666666;
  --color-blue: #0066CC;
  --color-green: #00C853;
  --color-gray-light: #F5F5F5;
  --color-gray-border: #E0E0E0;

  --font-family: 'Inter', sans-serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 4px rgba(0,0,0,0.08);
  --shadow-md: 0 2px 12px rgba(0,0,0,0.12);
  --shadow-lg: 0 4px 24px rgba(0,0,0,0.18);
  --shadow-top: 0 -2px 8px rgba(0,0,0,0.10);

  --transition-fast: 200ms ease-in-out;
  --transition-normal: 300ms ease-in-out;

  /* Spacing */
  --pad-section: 16px;
  --pad-card: 12px;
  --pad-btn-v: 12px;
  --pad-btn-h: 12px;
  --pad-icon: 8px;

  /* Typography */
  --font-title: 18px;
  --font-subtitle: 16px;
  --font-body: 14px;
  --font-label: 12px;
  --font-price: 32px;

  /* Header */
  --header-height: 56px;
  --bottom-bar-height: 60px;
}

@media (min-width: 600px) {
  :root {
    --pad-section: 20px;
    --pad-card: 16px;
    --pad-btn-v: 14px;
    --pad-btn-h: 16px;
    --pad-icon: 12px;
    --font-title: 20px;
    --font-subtitle: 18px;
    --font-body: 16px;
    --font-label: 12px;
    --font-price: 40px;
    --header-height: 64px;
    --bottom-bar-height: 70px;
  }
}

@media (min-width: 1024px) {
  :root {
    --pad-section: 24px;
    --pad-card: 20px;
    --pad-btn-v: 16px;
    --pad-btn-h: 20px;
    --pad-icon: 16px;
    --font-title: 24px;
    --font-subtitle: 20px;
    --font-body: 18px;
    --font-label: 14px;
    --font-price: 48px;
    --header-height: 72px;
    --bottom-bar-height: 80px;
  }
}

/* ====================================================
   RESET & BASE
   ==================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

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

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

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

button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

input {
  font-family: var(--font-family);
  outline: none;
}

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

ul {
  list-style: none;
}

/* ====================================================
   UTILITY CLASSES
   ==================================================== */
.text-action { color: var(--color-action); }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-blue { color: var(--color-blue); }
.text-green { color: var(--color-green); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.text-sm { font-size: 12px; }
.text-xs { font-size: 11px; }
.strike { text-decoration: line-through; color: var(--color-text-secondary); }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: 4px; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.w-full { width: 100%; }
.hidden { display: none !important; }
.relative { position: relative; }
.section-divider { height: 8px; background: var(--color-divider); }

/* Buttons */
.btn-action {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--color-action);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  border-radius: var(--radius-full);
  min-height: 44px;
  padding: 10px 20px;
  width: 100%;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-action:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(255,64,129,0.35);
}

.btn-action:active {
  transform: scale(0.98);
}

.btn-outline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: #fff;
  color: var(--color-action);
  font-weight: 700;
  font-size: 15px;
  border-radius: var(--radius-full);
  min-height: 44px;
  padding: 10px 20px;
  width: 100%;
  border: 2px solid var(--color-action);
  transition: background var(--transition-fast);
}

.btn-outline:hover {
  background: rgba(255,64,129,0.06);
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast);
  flex-shrink: 0;
}

.icon-btn:hover {
  background: var(--color-divider);
}

/* Stars */
.stars { color: #FFB300; font-size: 14px; }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
}

.badge-orange { background: var(--color-primary); color: #fff; }
.badge-green { background: #E8F5E9; color: #2E7D32; }
.badge-pink { background: rgba(255,64,129,0.12); color: var(--color-action); }

/* Overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* Modal */
.modal-sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #fff;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  z-index: 300;
  transform: translateY(100%);
  transition: transform var(--transition-normal);
  max-height: 90vh;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.modal-sheet.active {
  transform: translateY(0);
}

@media (min-width: 600px) {
  .modal-sheet { max-height: 75vh; }
}

@media (min-width: 1024px) {
  .modal-sheet {
    max-width: 520px;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    max-height: 80vh;
  }
  .modal-sheet.active {
    transform: translateX(-50%) translateY(0);
  }
}

.modal-handle {
  width: 40px;
  height: 4px;
  background: var(--color-gray-border);
  border-radius: var(--radius-full);
  margin: 12px auto 0;
}

/* ====================================================
   HEADER (shared)
   ==================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: #fff;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-section);
  z-index: 100;
}

.header-logo {
  display: flex;
  align-items: center;
}

.header-logo-img {
  height: 28px;
  width: auto;
  display: block;
  object-fit: contain;
}

@media (min-width: 600px) {
  .header-logo-img { height: 32px; }
}

@media (min-width: 1024px) {
  .header-logo-img { height: 36px; }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.cart-badge {
  position: relative;
}

.cart-badge-dot {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-action);
  border: 2px solid #fff;
}

/* ====================================================
   PAGE WRAPPER
   ==================================================== */
.page {
  min-height: 100vh;
  padding-top: var(--header-height);
  padding-bottom: calc(var(--bottom-bar-height) + 8px);
}

/* ====================================================
   BOTTOM BAR (shared)
   ==================================================== */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bottom-bar-height);
  background: #fff;
  box-shadow: var(--shadow-top);
  display: flex;
  align-items: center;
  padding: 8px 12px;
  gap: 8px;
  z-index: 99;
}

@media (min-width: 600px) {
  .bottom-bar { padding: 12px 16px; }
}

.bottom-bar-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-width: 40px;
  min-height: 40px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
  flex-shrink: 0;
  font-size: 10px;
  color: var(--color-text-secondary);
}

.bottom-bar-icon:hover { background: var(--color-divider); }

.bottom-bar-icon svg { display: block; }

.bottom-bar-spacer { width: 1px; background: var(--color-divider); height: 30px; }

.btn-add-cart {
  background: var(--color-gray-light);
  color: var(--color-text);
  font-weight: 700;
  font-size: 13px;
  border-radius: var(--radius-md);
  min-height: 44px;
  padding: 8px 12px;
  flex: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  transition: background var(--transition-fast);
  border: 1.5px solid var(--color-gray-border);
}

.btn-add-cart:hover { background: var(--color-gray-border); }

.btn-buy-now {
  background: var(--color-action);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  border-radius: var(--radius-md);
  min-height: 44px;
  padding: 8px 12px;
  flex: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-buy-now:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(255,64,129,0.35);
}

.btn-buy-now small {
  font-size: 10px;
  font-weight: 400;
  opacity: 0.85;
}

/* ====================================================
   REDUCED MOTION
   ==================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}