:root {
  --bg: #f8f4ec;
  --surface: #fffaf1;
  --ink: #1c1a1a;
  --muted: #5e5b57;
  --accent: #005f73;
  --accent-2: #ee9b00;
  --stroke: #ddd2be;
  --danger: #b02a37;
  --shadow: 0 18px 50px rgba(41, 35, 30, 0.15);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Space Grotesk", system-ui, sans-serif;
  background: linear-gradient(140deg, #f7f3ea 0%, #f2ebdd 42%, #f8f4ec 100%);
  position: relative;
  overflow-x: hidden;
}

.bg-shape {
  position: fixed;
  z-index: -1;
  border-radius: 999px;
  filter: blur(50px);
  opacity: 0.35;
}

.bg-shape-a {
  width: 420px;
  height: 420px;
  top: -110px;
  left: -120px;
  background: #00afb9;
}

.bg-shape-b {
  width: 380px;
  height: 380px;
  bottom: -120px;
  right: -80px;
  background: #f4a261;
}

.topbar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.1rem 0.8rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.topbar-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.collections-link {
  text-decoration: none;
  color: var(--accent);
  border: 1px solid var(--stroke);
  border-radius: 10px;
  padding: 0.46rem 0.72rem;
  font-weight: 600;
  background: #fff;
}

.collections-link:hover {
  background: color-mix(in oklab, var(--surface), white 35%);
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 700;
}

h1 {
  margin: 0.45rem 0 0;
  font-size: clamp(1.5rem, 2.8vw, 2.3rem);
  line-height: 1.15;
}

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.6rem 1.1rem 2rem;
  display: grid;
  grid-template-columns: minmax(200px, 240px) minmax(0, 2.3fr) minmax(280px, 0.95fr);
  gap: 1.2rem;
  align-items: start;
}

.catalog,
.cart-panel,
.filter-sidebar {
  background: color-mix(in oklab, var(--surface), white 35%);
  border: 1px solid var(--stroke);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.filter-sidebar {
  padding: 1rem;
}

.catalog {
  padding: 1.35rem;
}

h2 {
  margin: 0;
}

.section-lead {
  color: var(--muted);
  margin-top: 0.55rem;
  max-width: 60ch;
}

.filter-panel {
  padding: 0;
  position: sticky;
  top: 1rem;
}

.filter-search {
  margin-bottom: 0.9rem;
}

.filter-search label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.filter-search input {
  width: 100%;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  padding: 0.5rem 0.65rem;
  font: inherit;
  background: #fff;
}

.filter-search input:focus {
  outline: 2px solid color-mix(in oklab, var(--accent), white 65%);
  outline-offset: 1px;
}

.filter-panel h3 {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
}

.filter-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

button.filter-btn {
  text-align: left;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.45rem 0.6rem;
}

button.filter-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.catalog-empty {
  margin: 0.8rem 0 0;
  color: var(--muted);
}

.item-card {
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 0.95rem;
  background: #fffdf7;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  transform: translateY(10px);
  opacity: 0;
  animation: rise-in 0.45s ease forwards;
}

.item-badge {
  align-self: flex-start;
  padding: 0.16rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
}

.item-title {
  margin: 0;
  font-size: 1.06rem;
}

.item-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

.item-footer {
  margin-top: auto;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.6rem;
}

button {
  border: 0;
  font: inherit;
  cursor: pointer;
}

.add-btn,
.checkout-btn,
.cart-toggle {
  background: var(--accent);
  color: white;
  border-radius: 10px;
  padding: 0.48rem 0.8rem;
  font-weight: 600;
  transition: transform 0.15s ease, background 0.2s ease;
}

.add-btn:hover,
.checkout-btn:hover,
.cart-toggle:hover {
  background: #004b5b;
  transform: translateY(-1px);
}

.add-btn.is-added,
.add-btn:disabled {
  background: #3f7f8d;
  cursor: default;
  transform: none;
}

.ghost-btn {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--stroke);
  border-radius: 10px;
  padding: 0.42rem 0.72rem;
}

.cart-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.cart-toggle span {
  background: white;
  color: var(--accent);
  border-radius: 999px;
  min-width: 1.4rem;
  padding: 0.04rem 0.3rem;
  font-family: "IBM Plex Mono", monospace;
}

.cart-panel {
  display: flex;
  flex-direction: column;
  min-height: 420px;
}

.cart-header,
.cart-footer {
  padding: 1rem;
}

.cart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--stroke);
}

.cart-items {
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 54vh;
  overflow: auto;
}

.empty-cart {
  color: var(--muted);
  border: 1px dashed var(--stroke);
  border-radius: 12px;
  padding: 1rem;
  margin: 0;
}

.cart-row {
  border: 1px solid var(--stroke);
  border-radius: 12px;
  padding: 0.8rem;
  display: block;
  background: #fffdf8;
}

.cart-row h4 {
  margin: 0;
  font-size: 1rem;
}

.cart-row p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.remove-btn {
  margin-top: 0.4rem;
  background: transparent;
  color: var(--danger);
  padding: 0;
  font-size: 0.85rem;
}

.cart-total-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.8rem;
  font-family: "IBM Plex Mono", monospace;
}

.checkout-btn {
  width: 100%;
  padding-block: 0.62rem;
}

.tiny-note {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.checkout-dialog {
  width: min(500px, 94vw);
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 1rem;
}

.checkout-dialog::backdrop {
  background: rgba(25, 23, 22, 0.5);
}

.checkout-dialog h3 {
  margin-top: 0;
}

.checkout-dialog ul {
  padding-left: 1.15rem;
  color: var(--muted);
}

.checkout-total {
  font-family: "IBM Plex Mono", monospace;
}

.checkout-dialog menu {
  display: flex;
  gap: 0.6rem;
  justify-content: flex-end;
  padding: 0;
  margin: 0;
}

.collections-layout {
  max-width: 980px;
  margin: 0 auto;
  padding: 1.2rem 1.1rem 2rem;
}

.collections-panel {
  background: color-mix(in oklab, var(--surface), white 35%);
  border: 1px solid var(--stroke);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 1.35rem;
}

.collections-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem;
}

.collection-card {
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 1rem;
  background: #fffdf7;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  transform: translateY(10px);
  opacity: 0;
  animation: rise-in 0.45s ease forwards;
}

.collection-card h2 {
  font-size: 1rem;
}

.collection-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

.collection-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.collection-use {
  margin-top: auto;
  text-align: center;
  text-decoration: none;
}

.practice-layout {
  max-width: 980px;
  margin: 0 auto;
  padding: 1.2rem 1.1rem 2rem;
}

.practice-panel {
  background: color-mix(in oklab, var(--surface), white 35%);
  border: 1px solid var(--stroke);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 1.35rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 0.8rem;
  color: var(--accent);
  font-weight: 600;
}

.summary-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem;
}

.summary-card {
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 0.95rem;
  background: #fffdf7;
}

.summary-card h2 {
  font-size: 1rem;
  margin-bottom: 0.45rem;
}

.summary-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

@keyframes rise-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .topbar-actions {
    width: 100%;
    justify-content: flex-end;
  }

  .catalog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .filter-panel {
    position: static;
  }

  .filter-list {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .cart-panel {
    position: fixed;
    right: 0;
    top: 0;
    height: 100vh;
    width: min(420px, 95vw);
    border-radius: 16px 0 0 16px;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    z-index: 10;
  }

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

@media (max-width: 640px) {
  .catalog-grid {
    grid-template-columns: 1fr;
  }
}