@import url("https://fonts.googleapis.com/css2?family=Inter:wght@100;200;300&display=swap");

:root {
  --black: #000000;
  --white: #ffffff;
  --grey-light: #f5f5f5;
  --grey-mid: #cccccc;
  --font-main: "Inter", sans-serif;
  --fw-thin: 100;
  --fw-light: 300;
  --tracking: 0.15em;
  --tracking-wide: 0.3em;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-weight: var(--fw-light);
  color: var(--black);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font-family: var(--font-main);
  cursor: pointer;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: var(--fw-light);
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  text-align: center;
  border: none;
  transition: opacity 0.2s ease;
}

.btn:hover {
  opacity: 0.75;
}

.btn-primary {
  background: var(--black);
  color: var(--white);
  padding: 16px 40px;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--black);
  color: var(--black);
  padding: 16px 40px;
}

.btn-full {
  width: 100%;
  padding: 18px 0;
  font-size: 0.85rem;
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ---------- Navbar ---------- */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--grey-light);
}

.navbar .wrap {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 84px;
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-right {
  justify-content: flex-end;
}

.nav-link {
  font-size: 0.75rem;
  font-weight: var(--fw-light);
  letter-spacing: var(--tracking);
  text-transform: uppercase;
}

.logo {
  font-size: 1.4rem;
  font-weight: var(--fw-thin);
  letter-spacing: 0.4em;
  text-align: center;
  white-space: nowrap;
}

.nav-icon-btn {
  background: none;
  border: none;
  font-size: 0.75rem;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  position: relative;
}

.cart-count {
  display: inline-block;
  margin-left: 4px;
  font-size: 0.65rem;
}

.search-panel {
  display: none;
  border-bottom: 1px solid var(--grey-light);
  background: var(--white);
}

.search-panel.open {
  display: block;
}

.search-panel .wrap {
  padding: 20px 32px;
}

.search-input {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--black);
  font-family: var(--font-main);
  font-weight: var(--fw-light);
  font-size: 1rem;
  letter-spacing: 0.05em;
  padding: 8px 0;
  outline: none;
  background: transparent;
}

/* ---------- Hero ---------- */

.hero {
  display: flex;
  flex-direction: column;
}

.hero-image-wrap {
  width: 100%;
  height: 78vh;
  min-height: 440px;
  max-height: 820px;
  overflow: hidden;
  background: var(--grey-light);
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.hero-content {
  background: var(--black);
  color: var(--white);
  padding: 56px 32px;
  text-align: center;
}

.hero-tagline {
  font-size: clamp(1.3rem, 3.2vw, 2rem);
  font-weight: var(--fw-thin);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero .btn-outline {
  border-color: var(--white);
  color: var(--white);
}

/* ---------- Section headings ---------- */

.section {
  padding: 96px 0;
}

.section-title {
  font-size: 0.85rem;
  font-weight: var(--fw-light);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 56px;
}

/* ---------- Product grid ---------- */

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px 28px;
}

.product-card {
  display: block;
}

.product-image-wrap {
  background: var(--grey-light);
  aspect-ratio: 1 / 1;
  overflow: hidden;
  margin-bottom: 20px;
}

.product-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.product-image-wrap.wide {
  aspect-ratio: 2.15 / 1;
}

.product-image-wrap.wide img {
  object-fit: contain;
}

.product-name {
  font-size: 0.8rem;
  font-weight: 200;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 6px;
}

.product-price {
  font-size: 0.8rem;
  font-weight: var(--fw-light);
  text-align: center;
  color: #444;
}

.featured-grid {
  grid-template-columns: repeat(3, 1fr);
}

/* ---------- Trust bar ---------- */

.trust-bar {
  border-top: 1px solid var(--grey-light);
  border-bottom: 1px solid var(--grey-light);
  padding: 56px 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.trust-icon {
  font-size: 1.6rem;
  font-weight: var(--fw-thin);
  margin-bottom: 14px;
}

.trust-label {
  font-size: 0.7rem;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
}

/* ---------- Footer ---------- */

.footer {
  border-top: 1px solid var(--grey-light);
  padding: 56px 0 32px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-logo {
  font-size: 1.1rem;
  font-weight: var(--fw-thin);
  letter-spacing: 0.4em;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  font-size: 0.72rem;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
}

.footer-copy {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: #777;
  text-align: center;
  border-top: 1px solid var(--grey-light);
  padding-top: 24px;
}

/* ---------- Shop page ---------- */

.shop-header {
  padding: 56px 0 32px;
  text-align: center;
}

.shop-title {
  font-size: 1.2rem;
  font-weight: var(--fw-thin);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 48px;
}

.tab-btn {
  background: var(--white);
  color: var(--black);
  border: 1px solid var(--black);
  padding: 14px 44px;
  font-size: 0.75rem;
  font-weight: var(--fw-light);
  letter-spacing: var(--tracking);
  text-transform: uppercase;
}

.tab-btn + .tab-btn {
  border-left: none;
}

.tab-btn.active {
  background: var(--black);
  color: var(--white);
}

.shop-grid {
  padding-bottom: 96px;
}

.empty-state {
  text-align: center;
  padding: 80px 0;
  font-size: 0.85rem;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  color: #999;
  grid-column: 1 / -1;
}

/* ---------- Product detail page ---------- */

.product-detail {
  padding: 64px 0 96px;
}

.product-detail .wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}

.product-detail-image {
  background: var(--grey-light);
  aspect-ratio: 1 / 1;
  overflow: hidden;
  position: sticky;
  top: 110px;
}

.product-detail-image.wide {
  aspect-ratio: 2.15 / 1;
}

.product-detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail-image.wide img {
  object-fit: contain;
}

.product-detail-info .product-name {
  font-size: 1.4rem;
  letter-spacing: var(--tracking-wide);
  text-align: left;
  margin-bottom: 16px;
}

.product-detail-description {
  font-size: 0.9rem;
  font-weight: var(--fw-light);
  color: #444;
  margin-bottom: 24px;
  max-width: 420px;
}

.product-detail-price {
  font-size: 1.1rem;
  font-weight: var(--fw-light);
  margin-bottom: 40px;
}

.size-label {
  font-size: 0.72rem;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  margin-bottom: 14px;
  color: #666;
}

.size-selector {
  display: flex;
  gap: 10px;
  margin-bottom: 40px;
}

.size-box {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--grey-mid);
  font-size: 0.75rem;
  font-weight: var(--fw-light);
  background: var(--white);
}

.size-box.selected {
  border-color: var(--black);
  border-width: 1.5px;
}

.size-box:disabled {
  color: var(--grey-mid);
  border-color: var(--grey-light);
  cursor: not-allowed;
}

.add-to-cart-msg {
  margin-top: 16px;
  font-size: 0.75rem;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  text-align: center;
  min-height: 1.5em;
}

/* ---------- About page ---------- */

.about-hero {
  padding: 96px 0 48px;
  text-align: center;
}

.about-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: var(--fw-thin);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.about-body {
  max-width: 680px;
  margin: 0 auto;
  padding-bottom: 96px;
}

.about-body p {
  font-size: 0.95rem;
  font-weight: var(--fw-light);
  color: #333;
  margin-bottom: 24px;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  padding-bottom: 96px;
  border-top: 1px solid var(--grey-light);
  padding-top: 64px;
}

.about-values h3 {
  font-size: 0.85rem;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  font-weight: 200;
  margin-bottom: 10px;
}

.about-values p {
  font-size: 0.85rem;
  color: #555;
}

/* ---------- Cart page ---------- */

.cart-page {
  padding: 64px 0 96px;
}

.cart-title {
  font-size: 1.2rem;
  font-weight: var(--fw-thin);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: 48px;
}

.cart-layout {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 72px;
  align-items: start;
}

.cart-item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--grey-light);
}

.cart-item-image {
  background: var(--grey-light);
  width: 100px;
  height: 110px;
  overflow: hidden;
}

.cart-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-item-name {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 200;
  margin-bottom: 6px;
}

.cart-item-meta {
  font-size: 0.72rem;
  color: #777;
  margin-bottom: 10px;
}

.qty-control {
  display: flex;
  align-items: center;
  gap: 12px;
}

.qty-btn {
  width: 26px;
  height: 26px;
  border: 1px solid var(--grey-mid);
  background: var(--white);
  font-size: 0.8rem;
}

.remove-btn {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #999;
  background: none;
  border: none;
  text-decoration: underline;
  margin-top: 8px;
}

.cart-item-price {
  font-size: 0.85rem;
  font-weight: var(--fw-light);
  text-align: right;
}

.cart-empty {
  text-align: center;
  padding: 80px 0;
  font-size: 0.85rem;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  color: #999;
}

.cart-summary {
  border: 1px solid var(--grey-light);
  padding: 32px;
}

.cart-summary h2 {
  font-size: 0.8rem;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  font-weight: 200;
  margin-bottom: 24px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 10px 0;
}

.summary-total {
  border-top: 1px solid var(--grey-light);
  margin-top: 12px;
  padding-top: 16px;
  font-weight: 300;
}

.checkout-form {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.checkout-form input,
.checkout-form textarea {
  width: 100%;
  border: 1px solid var(--grey-mid);
  padding: 14px 16px;
  font-family: var(--font-main);
  font-weight: var(--fw-light);
  font-size: 0.85rem;
  outline: none;
  background: var(--white);
}

.checkout-form input:focus,
.checkout-form textarea:focus {
  border-color: var(--black);
}

.checkout-form textarea {
  resize: vertical;
  min-height: 80px;
}

.form-error {
  font-size: 0.7rem;
  color: #b00020;
  letter-spacing: 0.05em;
  min-height: 1.2em;
}

/* ---------- Duality section ---------- */

.duality-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.duality-card .product-name,
.duality-card .product-price {
  text-align: center;
}

/* ---------- Cart drawer ---------- */

.cart-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 290;
}

.cart-drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: 420px;
  max-width: 92vw;
  background: var(--white);
  border-left: 1px solid var(--black);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  z-index: 300;
  display: flex;
  flex-direction: column;
}

.cart-drawer.open {
  transform: translateX(0);
}

.cart-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 28px;
  border-bottom: 1px solid var(--grey-light);
  font-size: 0.78rem;
  font-weight: var(--fw-light);
  letter-spacing: var(--tracking);
  text-transform: uppercase;
}

.drawer-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  font-weight: 200;
}

.cart-drawer-items {
  flex: 1;
  overflow-y: auto;
  padding: 8px 28px;
}

.drawer-item {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--grey-light);
}

.drawer-item-image {
  width: 64px;
  height: 72px;
  background: var(--grey-light);
  overflow: hidden;
}

.drawer-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.drawer-item-name {
  font-size: 0.72rem;
  font-weight: 200;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.drawer-item-meta {
  font-size: 0.68rem;
  color: #777;
}

.drawer-item-price {
  font-size: 0.75rem;
  text-align: right;
  white-space: nowrap;
}

.drawer-empty {
  text-align: center;
  padding: 72px 0;
  font-size: 0.78rem;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  color: #999;
}

.cart-drawer-footer {
  border-top: 1px solid var(--grey-light);
  padding: 20px 28px 28px;
}

.cart-drawer-footer .summary-row {
  padding: 0 0 18px;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

  .product-detail .wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .product-detail-image {
    position: static;
  }

  .cart-layout {
    grid-template-columns: 1fr;
  }

  .about-values {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .navbar .wrap {
    grid-template-columns: auto auto;
    height: 68px;
  }

  .nav-left {
    display: none;
  }

  .logo {
    font-size: 1.1rem;
    letter-spacing: 0.3em;
  }

  .nav-right {
    gap: 16px;
  }

  .hero-tagline {
    font-size: 1.6rem;
  }

  .section {
    padding: 64px 0;
  }
}