/* === FONTS === */
:root {
  --font-main: 'Plus Jakarta Sans', sans-serif;
  
  /* Telegram System Colors (Defaults if not in TWA) */
  --tg-bg: var(--tg-theme-bg-color, #ffffff);
  --tg-secondary-bg: var(--tg-theme-secondary-bg-color, #f4f4f7);
  --tg-text: var(--tg-theme-text-color, #000000);
  --tg-hint: var(--tg-theme-hint-color, #999999);
  --tg-link: var(--tg-theme-link-color, #248bed);
  --tg-button: var(--tg-theme-button-color, #248bed);
  --tg-button-text: var(--tg-theme-button-text-color, #ffffff);
  
  --accent: #ff4757;
  --success: #2ed573;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  
  --radius: 12px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === GLOBAL === */
* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-main);
  background-color: var(--tg-bg);
  color: var(--tg-text);
  line-height: 1.5;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.icon {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* === LAYOUT === */
#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-bottom: 70px; /* space for tab bar */
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--tg-bg);
  border-bottom: 1px solid var(--tg-secondary-bg);
  padding: var(--space-sm) var(--space-md);
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo {
  font-weight: 700;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-dot {
  width: 10px;
  height: 10px;
  background: var(--tg-button);
  border-radius: 50%;
}

.cart-badge-link {
  position: relative;
  display: flex;
  align-items: center;
}

.cart-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--accent);
  color: white;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

.content {
  padding: var(--space-md);
  flex: 1;
}

.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--tg-secondary-bg);
  display: flex;
  justify-content: space-around;
  align-items: center;
  border-top: 1px solid rgba(0,0,0,0.05);
  backdrop-filter: blur(10px);
  z-index: 1000;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 0.7rem;
  color: var(--tg-hint);
  transition: var(--transition);
  flex: 1;
}

.tab-item.active {
  color: var(--tg-button);
}

.tab-item span {
  margin-top: 4px;
}

/* === COMPONENTS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  font-size: 1rem;
}

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

.btn-primary:active {
  transform: scale(0.98);
  opacity: 0.9;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Category Grid */
.category-scroll {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  padding-bottom: var(--space-sm);
  scrollbar-width: none;
}

.category-scroll::-webkit-scrollbar {
  display: none;
}

.category-card {
  flex: 0 0 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.category-image {
  width: 64px;
  height: 64px;
  background: var(--tg-secondary-bg);
  border-radius: 50%;
  padding: 12px;
  object-fit: contain;
}

.category-name {
  font-size: 0.8rem;
  font-weight: 600;
  text-align: center;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.product-card {
  background: var(--tg-secondary-bg);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.product-card:active {
  transform: translateY(-4px);
}

.product-card__image {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
}

.product-card__content {
  padding: var(--space-sm);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card__title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card__price {
  font-weight: 700;
  color: var(--tg-button);
  margin-top: auto;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.4s ease forwards;
}

/* module: catalog */
.hero {
  position: relative;
  width: 100%;
  height: 180px;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: white;
}

.hero-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
}

.category-header {
  margin-bottom: var(--space-lg);
}

/* module: product */
.product-detail__image {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: var(--space-md);
}

.product-detail__price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--tg-button);
  margin-bottom: var(--space-sm);
}

.product-detail__desc {
  color: var(--tg-hint);
  margin-bottom: var(--space-lg);
}

/* module: cart */
.cart-item {
  display: flex;
  gap: var(--space-sm);
  background: var(--tg-secondary-bg);
  padding: var(--space-sm);
  border-radius: var(--radius);
  margin-bottom: var(--space-sm);
}

.cart-item__image {
  width: 60px;
  height: 60px;
  border-radius: 8px;
  object-fit: cover;
}

.cart-item__info {
  flex: 1;
}

.cart-item__qty {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
}

.qty-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--tg-hint);
  background: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--tg-text);
}

/* module: checkout */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.85rem;
  color: var(--tg-hint);
}

.form-input {
  width: 100%;
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--tg-secondary-bg);
  background: var(--tg-secondary-bg);
  color: var(--tg-text);
  font-family: inherit;
  font-size: 1rem;
}

.form-input:focus {
  outline: none;
  border-color: var(--tg-button);
}