:root {
  --ink: #211f1c;
  --stone: #eae4d7;
  --stone-deep: #ded6c4;
  --cairn-white: #f8f5ef;
  --moss: #59684c;
  --moss-deep: #3f4a37;
  --clay: #a3622e;
  --fog: #8c8578;
  --line: rgba(33, 31, 28, 0.12);
  --shadow: 0 8px 24px rgba(33, 31, 28, 0.08);
  --radius: 10px;
  --font-display: "Fraunces", serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--stone);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(234, 228, 215, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 0.01em;
}

.logo svg { color: var(--clay); }

.tagline {
  margin: 0;
  color: var(--fog);
  font-size: 13px;
  font-family: var(--font-mono);
  flex: 1;
}

.cart-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  background: var(--ink);
  color: var(--cairn-white);
  border: none;
  border-radius: 999px;
  padding: 9px 16px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
}

.cart-count {
  background: var(--clay);
  color: var(--cairn-white);
  border-radius: 999px;
  padding: 1px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--line);
}

.hero-inner { max-width: 720px; }

.eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  color: var(--moss-deep);
  margin: 0 0 14px;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.08;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

.hero-copy {
  font-size: 16px;
  color: #46433c;
  max-width: 58ch;
  margin: 0 0 22px;
}

.hero-copy strong { color: var(--ink); }

.hero-hint {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--moss-deep);
  background: var(--cairn-white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 16px;
  max-width: fit-content;
}

.hint-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--moss);
  flex-shrink: 0;
  align-self: center;
}

.hero-hint em { color: var(--ink); font-style: normal; }

/* ---------- Main layout ---------- */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  padding: 40px 24px 120px;
  align-items: start;
}

/* ---------- Catalog ---------- */
.catalog-controls {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

#searchInput {
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--cairn-white);
  color: var(--ink);
}

#searchInput:focus-visible { outline: 2px solid var(--moss); outline-offset: 1px; }

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fog);
  cursor: pointer;
}

.chip[aria-pressed="true"] {
  background: var(--moss);
  border-color: var(--moss);
  color: var(--cairn-white);
}

.chip:focus-visible { outline: 2px solid var(--moss); outline-offset: 1px; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}

.product-card {
  background: var(--cairn-white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.product-card.tool-highlight {
  box-shadow: 0 0 0 2px var(--moss), var(--shadow);
  transform: translateY(-2px);
}

.product-glyph {
  width: 40px; height: 40px;
  border-radius: 8px;
  background: var(--stone-deep);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--moss-deep);
}

.product-card h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 17px;
  margin: 0;
}

.product-category {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fog);
}

.product-desc {
  font-size: 13.5px;
  color: #524e46;
  margin: 0;
  flex: 1;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.product-price {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
}

.stock-low { color: var(--clay); font-family: var(--font-mono); font-size: 11px; }

.add-btn {
  background: var(--ink);
  color: var(--cairn-white);
  border: none;
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-body);
}

.add-btn:hover { background: var(--moss-deep); }

.empty-state {
  color: var(--fog);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 40px 0;
  text-align: center;
}

/* ---------- Cart panel ---------- */
.cart-panel {
  position: sticky;
  top: 92px;
}

.cart-panel-inner {
  background: var(--cairn-white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.cart-panel h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 19px;
  margin: 0 0 14px;
}

.cart-items {
  list-style: none;
  margin: 0 0 6px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cart-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.cart-item:last-child { border-bottom: none; }

.cart-item-name { font-weight: 500; }
.cart-item-meta { color: var(--fog); font-family: var(--font-mono); font-size: 11.5px; margin-top: 2px; }

.cart-item-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
}

.qty-btn {
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
}

.remove-btn {
  background: none;
  border: none;
  color: var(--clay);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  padding: 0;
  margin-left: 4px;
}

.cart-item-price {
  font-family: var(--font-mono);
  font-size: 13.5px;
  white-space: nowrap;
}

.cart-empty {
  color: var(--fog);
  font-family: var(--font-mono);
  font-size: 12.5px;
  margin: 4px 0 16px;
}

.coupon-row {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

#couponInput {
  flex: 1;
  padding: 9px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--stone);
}

#couponApply {
  border: 1px solid var(--ink);
  background: transparent;
  border-radius: 8px;
  padding: 9px 14px;
  font-size: 13px;
  cursor: pointer;
}

.coupon-message {
  font-size: 12px;
  font-family: var(--font-mono);
  min-height: 16px;
  margin: 8px 0 0;
}

.coupon-message.success { color: var(--moss-deep); }
.coupon-message.error { color: var(--clay); }

.cart-totals { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 14px; }

.total-row {
  display: flex;
  justify-content: space-between;
  font-size: 13.5px;
  padding: 3px 0;
  font-family: var(--font-mono);
}

.total-row-final {
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-body);
  margin-top: 4px;
}

.discount-row { color: var(--moss-deep); }

.checkout-btn {
  width: 100%;
  margin-top: 18px;
  padding: 13px;
  border-radius: 999px;
  border: none;
  background: var(--moss);
  color: var(--cairn-white);
  font-size: 14.5px;
  font-weight: 600;
  cursor: not-allowed;
  opacity: 0.5;
}

.checkout-btn:not(:disabled) {
  cursor: pointer;
  opacity: 1;
}

.checkout-btn:not(:disabled):hover { background: var(--moss-deep); }

.checkout-note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fog);
  text-align: center;
  margin: 10px 0 0;
}

/* ---------- Cairn activity log ---------- */
.cairn-log {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 250px;
  background: rgba(33, 31, 28, 0.94);
  color: var(--cairn-white);
  border-radius: 14px;
  padding: 14px 16px 16px;
  z-index: 30;
  font-family: var(--font-mono);
  box-shadow: 0 12px 32px rgba(0,0,0,0.28);
}

.cairn-log-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #c9c3b4;
  margin-bottom: 10px;
}

.cairn-log-header svg { color: var(--clay); flex-shrink: 0; }

.cairn-log-header span { flex: 1; }

#cairnClear {
  background: none;
  border: none;
  color: #8c8578;
  font-family: var(--font-mono);
  font-size: 10.5px;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}

.cairn-stones {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column-reverse;
  gap: 4px;
  max-height: 220px;
  overflow-y: auto;
}

.cairn-stone {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  padding: 6px 8px;
  border-radius: 6px;
  background: rgba(248, 245, 239, 0.06);
  animation: stone-drop 0.28s ease;
}

.cairn-stone .stone-tool { color: #d9cdb3; font-weight: 500; }
.cairn-stone .stone-detail { color: #8c8578; font-size: 11px; }

@keyframes stone-drop {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.cairn-empty {
  font-size: 11.5px;
  color: #75705f;
  margin: 0;
}

/* ---------- Toasts ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(8px);
  background: var(--ink);
  color: var(--cairn-white);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-family: var(--font-body);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 40;
}

.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .tagline { display: none; }
  .cart-toggle { display: flex; }
  .main-grid {
    grid-template-columns: 1fr;
    padding-bottom: 220px;
  }
  .cart-panel {
    position: fixed;
    inset: auto 0 0 0;
    top: auto;
    max-height: 80vh;
    overflow-y: auto;
    border-radius: 16px 16px 0 0;
    transform: translateY(100%);
    transition: transform 0.25s ease;
    z-index: 25;
  }
  .cart-panel.open { transform: translateY(0); }
  .cart-panel-inner { border-radius: 16px 16px 0 0; box-shadow: 0 -12px 32px rgba(0,0,0,0.18); }
  .cairn-log { width: calc(100% - 40px); left: 20px; right: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cairn-stone { animation: none; }
  .toast { transition: none; }
}