html {
  overflow-y: scroll;
  scrollbar-gutter: stable;
}

body {
  font-family: 'Inter', Arial, sans-serif;
}

:root {
  --page-bg: #090b10;
  --panel-bg: #141821;
  --panel-soft: #1b202b;
  --panel-border: #2b3240;
  --text-main: #f8fafc;
  --text-muted: #a8b3c4;
  --accent: #e11d48;
  --accent-strong: #be123c;
  --accent-soft: #3f111b;
}

.tire-tread-card {
  position: relative;
  overflow: hidden;
  background-color: var(--panel-soft);
  background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.028) 12%, transparent 12%, transparent 38%, rgba(255, 255, 255, 0.022) 38%, rgba(255, 255, 255, 0.022) 50%, transparent 50%), linear-gradient(225deg, rgba(0, 0, 0, 0.16) 12%, transparent 12%, transparent 38%, rgba(0, 0, 0, 0.12) 38%, rgba(0, 0, 0, 0.12) 50%, transparent 50%), radial-gradient(circle at 20% 0%, rgba(225, 29, 72, 0.045), transparent 18rem);
  background-size: 1.45rem 1.45rem, 1.45rem 1.45rem, cover;
  background-position: 0 0, 0.72rem 0, center;
}

.tire-tread-card::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, transparent 0 18%, rgba(255,255,255,0.03) 18% 20%, transparent 20% 48%, rgba(255,255,255,0.026) 48% 52%, transparent 52% 80%, rgba(255,255,255,0.024) 80% 82%, transparent 82% 100%); opacity: 0.42; transition: opacity 160ms ease; }
.tire-tread-card:hover::before { opacity: 0.62; }

.combo-select-wrapper { min-height: 65px; }
.combo-select { position: relative; width: 100%; }
.combo-select-native { display: none; }
.combo-trigger { display: flex; min-height: 2.375rem; width: 100%; align-items: center; justify-content: space-between; gap: 0.75rem; border-radius: 0.375rem; border: 1px solid #cbd5e1; background: #f1f5f9; padding: 0.5rem 0.75rem; text-align: left; font-size: 0.875rem; color: #0f172a; outline: none; transition: border-color 150ms ease, background-color 150ms ease, box-shadow 150ms ease; }
.combo-trigger:hover, .combo-trigger:focus { border-color: #fb7185; background: #ffe4e6; box-shadow: 0 0 0 2px rgba(251, 113, 133, 0.18); }
.combo-trigger.is-active { border-color: #fb7185; background: #ffe4e6; color: #0f172a; font-weight: 600; box-shadow: none; }
.combo-trigger-icon { flex: 0 0 auto; color: #0f172a; font-size: 0.75rem; line-height: 1; }
.combo-panel { position: absolute; left: 0; right: 0; top: calc(100% + 0.375rem); z-index: 70; display: none; overflow: hidden; border-radius: 0.5rem; border: 1px solid #cbd5e1; background: #ffffff; box-shadow: 0 1.25rem 2.5rem rgba(15, 23, 42, 0.16); }
.combo-select.is-open .combo-panel { display: block; }
.combo-search { min-height: 2.375rem; width: 100%; border: 0; border-bottom: 1px solid #cbd5e1; background: #ffffff; padding: 0.5rem 0.75rem; font-size: 0.875rem; color: #0f172a; outline: none; }
.combo-options { max-height: min(16rem, 52vh); overflow-y: auto; padding: 0.375rem; }
.combo-option, .combo-empty { width: 100%; border: 0; border-radius: 0.375rem; background: transparent; padding: 0.625rem 0.75rem; text-align: left; font-size: 0.9rem; color: #0f172a; }
.combo-option { cursor: pointer; }
.combo-option:hover, .combo-option.is-selected { background: #ffe4e6; color: #0f172a; }
.combo-empty { color: #334155; }

.site-hero-background {
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 68%, rgba(0, 0, 0, 0.72) 80%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 68%, rgba(0, 0, 0, 0.72) 80%, transparent 100%);
}

.product-sticky-bar {
  opacity: 0;
  pointer-events: none;
  transform: translateY(calc(-100% - 1rem));
  transition: opacity 180ms ease, transform 180ms ease;
}

.product-sticky-bar.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}