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

:root {
  --black: #151719;
  --dark: #222426;
  --gray: #777;
  --light: #f4f4f2;
  --line: #dededb;
  --white: #fff;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", Arial, sans-serif;
  background: var(--white);
  color: var(--black);
  font-size: 12px;
}

button, input, select {
  font: inherit;
}

button, a {
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
}

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

.topbar {
  height: 70px;
  background: #fafaf9;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid #e9e9e7;
}

.brand {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 7px;
  margin-left: 45px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 22px;
}

.icon-btn,
.cart-button {
  border: 0;
  background: transparent;
  color: var(--black);
  font-size: 19px;
}

.menu-btn {
  font-size: 17px;
}

.cart-button {
  position: relative;
  font-size: 16px;
}

.cart-button span {
  position: absolute;
  top: -8px;
  right: -10px;
  background: var(--black);
  color: white;
  border-radius: 50%;
  min-width: 16px;
  height: 16px;
  display: grid;
  place-items: center;
  font-size: 9px;
}

.hero {
  min-height: 300px;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  background: #262724;
  overflow: hidden;
}

.hero-content {
  padding: 52px 8%;
  color: white;
  background:
    linear-gradient(100deg, rgba(20, 22, 20, .96), rgba(45, 47, 43, .72)),
    url("https://images.unsplash.com/photo-1509631179647-0177331693ae?auto=format&fit=crop&w=1200&q=80") center/cover;
}

.eyebrow {
  font-size: 8px;
  letter-spacing: 3px;
  margin-bottom: 15px;
  color: #b5b5b1;
}

.hero h1 {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 400;
  line-height: 1.28;
  letter-spacing: 4px;
}

.hero-subtitle {
  margin: 12px 0 20px;
  color: #d0d0cc;
  font-size: 10px;
}

.outline-btn {
  display: inline-block;
  border: 1px solid #eee;
  padding: 12px 22px;
  font-size: 9px;
  letter-spacing: 2px;
  transition: .2s;
}

.outline-btn:hover {
  background: white;
  color: black;
}

.hero-image {
  min-height: 300px;
  background:
    linear-gradient(90deg, rgba(28, 30, 27, .15), rgba(0, 0, 0, .05)),
    url("https://images.unsplash.com/photo-1551488831-00ddcb6c6bd3?auto=format&fit=crop&w=1200&q=85") center/cover;
  filter: grayscale(100%);
}

.catalog {
  padding: 32px 36px 40px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 17px;
}

.section-heading h2 {
  font-size: 10px;
  letter-spacing: 3px;
}

.section-heading label {
  font-size: 9px;
  letter-spacing: 1px;
}

select {
  border: 0;
  background: transparent;
  margin-left: 7px;
  outline: none;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px 16px;
}

.product-image {
  height: 185px;
  background: #eee;
  position: relative;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(75%);
  transition: transform .3s;
}

.product-card:hover img {
  transform: scale(1.04);
}

.product-info {
  padding-top: 10px;
}

.product-name {
  font-size: 10px;
  margin-bottom: 7px;
}

.product-price {
  font-size: 10px;
  margin-bottom: 10px;
}

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

.add-btn {
  border: 0;
  background: var(--black);
  color: white;
  padding: 8px 13px;
  font-size: 8px;
  letter-spacing: .6px;
}

.add-btn:hover {
  background: #444;
}

.favorite {
  border: 0;
  background: transparent;
  font-size: 18px;
  color: #555;
}

.about {
  padding: 70px 10%;
  background: #f1f1ee;
}

.about h2 {
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 400;
  letter-spacing: 2px;
  line-height: 1.3;
  margin-bottom: 20px;
}

.about p:last-child {
  max-width: 410px;
  line-height: 1.8;
  color: #666;
}

footer {
  padding: 25px;
  text-align: center;
  font-size: 8px;
  letter-spacing: 1px;
}

.cart-panel {
  position: fixed;
  z-index: 50;
  top: 0;
  right: -390px;
  width: min(390px, 100%);
  height: 100vh;
  background: white;
  display: flex;
  flex-direction: column;
  transition: right .3s ease;
  box-shadow: -5px 0 25px rgba(0, 0, 0, .08);
}

.cart-panel.open {
  right: 0;
}

.cart-header {
  height: 70px;
  padding: 0 17px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.cart-header h2 {
  font-size: 10px;
  letter-spacing: 3px;
}

.close-cart,
.close-menu {
  background: transparent;
  border: 0;
  font-size: 22px;
}

.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 20px 16px;
}

.empty-cart {
  color: #888;
  text-align: center;
  padding-top: 50px;
}

.cart-item {
  display: grid;
  grid-template-columns: 65px 1fr auto;
  gap: 12px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid #eee;
}

.cart-item img {
  width: 65px;
  height: 65px;
  object-fit: cover;
  background: #eee;
}

.cart-item-name {
  font-size: 10px;
  margin-bottom: 7px;
}

.cart-item-meta {
  color: #777;
  font-size: 9px;
  line-height: 1.8;
}

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

.quantity button {
  border: 0;
  background: transparent;
  font-size: 15px;
}

.remove-item {
  border: 0;
  background: transparent;
  color: #777;
  font-size: 14px;
}

.cart-summary {
  padding: 18px 16px 25px;
  border-top: 1px solid var(--line);
}

.discount-row {
  display: flex;
  gap: 7px;
  margin-bottom: 8px;
}

.discount-row input {
  flex: 1;
  min-width: 0;
  padding: 10px;
  border: 1px solid #ddd;
  outline: none;
  font-size: 10px;
}

.discount-row button {
  background: var(--black);
  color: white;
  border: 0;
  padding: 0 15px;
  font-size: 9px;
}

#discountMessage {
  min-height: 14px;
  color: #777;
  font-size: 9px;
  margin-bottom: 12px;
}

.summary-line {
  display: flex;
  justify-content: space-between;
  margin: 10px 0;
  font-size: 10px;
}

.summary-line.total {
  font-size: 12px;
  font-weight: 700;
  margin-top: 22px;
}

.checkout-btn {
  width: 100%;
  background: var(--black);
  color: white;
  border: 0;
  padding: 15px;
  font-size: 9px;
  letter-spacing: 2px;
  margin-top: 13px;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .35);
  opacity: 0;
  pointer-events: none;
  z-index: 40;
  transition: opacity .3s;
}

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

.mobile-menu {
  position: fixed;
  z-index: 60;
  top: 0;
  left: -280px;
  width: 280px;
  height: 100vh;
  background: white;
  padding: 80px 30px;
  display: flex;
  flex-direction: column;
  gap: 25px;
  transition: left .3s;
  box-shadow: 5px 0 25px rgba(0, 0, 0, .08);
}

.mobile-menu.open {
  left: 0;
}

.mobile-menu a {
  font-size: 13px;
  letter-spacing: 2px;
}

.close-menu {
  position: absolute;
  right: 20px;
  top: 20px;
}

@media (max-width: 850px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero-image {
    min-height: 230px;
  }

  .brand {
    margin-left: 0;
    letter-spacing: 4px;
  }
}

@media (max-width: 500px) {
  .topbar {
    padding: 0 16px;
  }

  .catalog {
    padding: 25px 16px;
  }

  .product-image {
    height: 165px;
  }

  .section-heading {
    align-items: flex-start;
    gap: 12px;
    flex-direction: column;
  }

  .hero-content {
    padding: 45px 28px;
  }
}


.contact-section {
  padding: 70px 10%;
  background: #fafaf8;
  text-align: center;
}

.contact-section h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 400;
  letter-spacing: 2px;
  margin-bottom: 18px;
}

.contact-section a {
  font-size: 13px;
  letter-spacing: 1px;
  border-bottom: 1px solid #222;
  padding-bottom: 5px;
}

.checkout-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  background: rgba(0, 0, 0, .45);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s;
  overflow-y: auto;
}

.checkout-modal.open {
  opacity: 1;
  pointer-events: auto;
}

.checkout-box {
  width: min(650px, 100%);
  max-height: 92vh;
  overflow-y: auto;
  background: #fff;
  padding: 28px;
}

.checkout-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 1px solid #ddd;
  padding-bottom: 18px;
  margin-bottom: 22px;
}

.checkout-heading h2 {
  font-size: 27px;
  font-weight: 400;
  letter-spacing: 1px;
}

.close-checkout {
  border: 0;
  background: transparent;
  font-size: 24px;
}

#checkoutForm h3 {
  font-size: 11px;
  letter-spacing: 2px;
  margin: 22px 0 14px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

#checkoutForm label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 10px;
  color: #444;
}

#checkoutForm .full-width {
  grid-column: 1 / -1;
}

#checkoutForm input,
#checkoutForm textarea {
  width: 100%;
  border: 1px solid #d8d8d5;
  padding: 11px;
  outline: none;
  resize: vertical;
  background: #fff;
}

#checkoutForm input:focus,
#checkoutForm textarea:focus {
  border-color: #222;
}

.payment-options {
  display: flex;
  gap: 12px;
}

.payment-option {
  flex: 1;
  border: 1px solid #ddd;
  padding: 13px;
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 8px !important;
}

.payment-option input {
  width: auto !important;
}

.card-fields {
  display: none;
  margin-top: 14px;
  padding: 15px;
  background: #f6f6f3;
}

.card-fields.show {
  display: block;
}

.demo-note,
.checkout-note {
  font-size: 9px;
  line-height: 1.6;
  color: #777;
  margin-top: 10px;
}

.checkout-total {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid #ddd;
  margin-top: 25px;
  padding-top: 18px;
  font-size: 12px;
}

.checkout-total strong {
  font-size: 14px;
}

.place-order-btn {
  width: 100%;
  border: 0;
  background: #151719;
  color: white;
  padding: 15px;
  margin-top: 18px;
  font-size: 10px;
  letter-spacing: 2px;
}

@media (max-width: 550px) {
  .checkout-box {
    padding: 20px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  #checkoutForm .full-width {
    grid-column: auto;
  }

  .payment-options {
    flex-direction: column;
  }
}


.product-description {
  color: #777;
  font-size: 9px;
  line-height: 1.6;
  min-height: 29px;
  margin-bottom: 10px;
}

.size-label {
  display: block;
  font-size: 8px;
  letter-spacing: 1px;
  margin-bottom: 5px;
  color: #555;
}

.size-select {
  width: 100%;
  border: 1px solid #ddd;
  background: white;
  padding: 9px;
  font-size: 9px;
  margin-bottom: 10px;
  outline: none;
}

.size-select:focus {
  border-color: #222;
}