/* ==========================================================================
   RIVIAN ESSENTIALS — forest dusk design system
   Palette: deep pine surfaces, warm canvas text, compass-yellow accent
   Type: Barlow Condensed (trail signage) / Karla (body) / Chivo Mono (labels)
   ========================================================================== */

:root {
  /* Surfaces — forest dusk */
  --forest:   #101b12;   /* page background, deep pine */
  --pine:     #16241a;   /* cards, panels */
  --pine-2:   #0c150e;   /* deep bands, footer */
  --moss:     #1d2f22;   /* elevated / hover surfaces */

  /* Edges */
  --edge:        #24382a;
  --edge-strong: #33503c;

  /* Text — warm canvas on dark green */
  --canvas: #efead8;     /* headings */
  --linen:  #cdc9b8;     /* body copy */
  --sage:   #9aa893;     /* secondary copy */
  --lichen: #6e7d6b;     /* muted labels, meta */

  /* Accents */
  --compass:      #f0b429;                     /* Rivian compass yellow */
  --compass-hot:  #ffc94a;
  --compass-soft: rgba(240, 180, 41, 0.12);
  --compass-ring: rgba(240, 180, 41, 0.45);
  --ember:        #d97742;                     /* campfire ember — sparingly */

  /* Type */
  --font-display: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --font-body:    'Karla', 'Helvetica Neue', sans-serif;
  --font-mono:    'Chivo Mono', 'Courier New', monospace;

  /* Layout */
  --max-w: 1200px;
  --nav-h: 60px;

  /* Motion */
  --ease:     cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Elevation */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.45);
}

/* ---------- Reset ---------- */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--linen);
  background: var(--forest);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--compass);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--compass);
  color: var(--forest);
}

.svg-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

/* ---------- Glyphs ---------- */

.glyph {
  width: 12px;
  height: 16px;
  fill: var(--compass);
  flex: none;
}

.glyph--brand {
  width: 14px;
  height: 19px;
}

/* ---------- Treelines (signature) ---------- */

.treeline {
  pointer-events: none;
}

.treeline svg {
  width: 100%;
}

.treeline use {
  fill: var(--pine-2);
}

.treeline__ground {
  fill: var(--edge);
}

.treeline--hero {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  z-index: 3;
}

/* Height must scale with viewport width: the SVG uses xMidYMax slice on a
   1440x64 viewBox, so a capped height at wide viewports crops the tree tops.
   Keeping height >= width/22.5 (4.5vw) means any overflow crops sideways only. */
.treeline--hero svg {
  height: max(36px, 4.5vw);
}

.treeline--hero use {
  fill: var(--forest);
}

.treeline--hero .treeline__ground {
  fill: var(--forest);
}

.treeline--divider {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.treeline--divider svg {
  height: 40px;
}

.treeline--divider use {
  fill: var(--edge-strong);
}

/* Same top-crop guard as the hero treeline: 1440x48 viewBox needs >= 3.4vw.
   Anchored above the footer edge via bottom so it tracks its own height. */
.treeline--footer {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% - 2px);
}

.treeline--footer svg {
  height: max(48px, 3.4vw);
}

.treeline--footer use {
  fill: var(--pine-2);
}

/* ==========================================================================
   HERO
   ========================================================================== */

.hero {
  position: relative;
  min-height: clamp(560px, 92vh, 900px);
  display: flex;
  align-items: center;
  padding: 96px 24px 140px;
  overflow: hidden;
  isolation: isolate;
  background:
    linear-gradient(180deg, #0a120c 0%, #12211610 55%),
    linear-gradient(180deg, #0b130d 0%, #15271b 60%, #101b12 100%);
}

/* Topo contour lines drifting behind the headline */
.hero__topo {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero__topo svg {
  width: 100%;
  height: 100%;
}

.topo-line {
  stroke: var(--sage);
  stroke-width: 1.1;
  opacity: 0.14;
}

.topo-line:nth-child(2) { opacity: 0.11; }
.topo-line:nth-child(3) { opacity: 0.09; }
.topo-line:nth-child(4) { opacity: 0.07; }
.topo-line:nth-child(5) { opacity: 0.05; }

/* Warm dusk glow low on the horizon */
.hero__dusk {
  position: absolute;
  left: 50%;
  bottom: -12%;
  transform: translateX(-50%);
  width: min(1100px, 130vw);
  height: 55%;
  z-index: 1;
  background: radial-gradient(ellipse at 50% 100%, rgba(240, 180, 41, 0.14), rgba(217, 119, 66, 0.05) 45%, transparent 72%);
  filter: blur(10px);
}

.hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sage);
  padding: 9px 16px;
  border: 1px solid var(--edge);
  border-radius: 3px;
  background: rgba(12, 21, 14, 0.6);
  margin-bottom: 28px;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(4rem, 12vw, 8.5rem);
  line-height: 0.9;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--canvas);
  margin-bottom: 26px;
}

.hero__title-accent {
  color: var(--compass);
}

.hero__sub {
  max-width: 34rem;
  font-size: clamp(1.02rem, 1.5vw, 1.15rem);
  color: var(--sage);
  margin-bottom: 40px;
}

.hero__vehicles {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--forest);
  background: var(--compass);
  padding: 13px 30px;
  border-radius: 4px;
  transition: background 180ms var(--ease), transform 180ms var(--ease), box-shadow 220ms var(--ease);
}

.hero-pill:hover {
  background: var(--compass-hot);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(240, 180, 41, 0.25);
}

.hero__vehicle-tags {
  display: inline-flex;
  gap: 10px;
}

.vehicle-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--lichen);
  border: 1px solid var(--edge);
  border-radius: 3px;
  padding: 7px 12px;
}

/* ==========================================================================
   STICKY CATEGORY NAV
   ========================================================================== */

.category-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 21, 14, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--edge);
  transition: box-shadow 300ms var(--ease);
}

.category-nav.is-stuck {
  box-shadow: var(--shadow-md);
}

.category-nav__inner {
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: var(--max-w);
  min-height: var(--nav-h);
  margin: 0 auto;
  padding: 0 24px;
}

.category-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--canvas);
  white-space: nowrap;
}

.category-nav__pills {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.category-nav__pills::-webkit-scrollbar {
  display: none;
}

/* Trail-blaze active marker: a small painted rectangle, like a blaze on a tree */
.nav-pill {
  position: relative;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.86rem;
  color: var(--sage);
  padding: 9px 13px 11px;
  white-space: nowrap;
  transition: color 180ms var(--ease);
}

.nav-pill::after {
  content: '';
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 6px;
  height: 3px;
  border-radius: 1px;
  background: var(--compass);
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 200ms var(--ease), transform 260ms var(--ease-out);
}

.nav-pill:hover {
  color: var(--canvas);
}

.nav-pill.is-active {
  color: var(--canvas);
}

.nav-pill.is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

.category-nav__filter {
  display: flex;
  gap: 5px;
  margin-left: auto;
  padding: 4px;
  border: 1px solid var(--edge);
  border-radius: 4px;
  background: var(--pine-2);
}

.filter-chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--lichen);
  padding: 6px 11px;
  border-radius: 3px;
  transition: color 160ms var(--ease), background 160ms var(--ease);
}

.filter-chip:hover {
  color: var(--canvas);
}

.filter-chip.is-active {
  color: var(--forest);
  background: var(--compass);
}

/* ==========================================================================
   SECTIONS
   ========================================================================== */

.section {
  padding: clamp(64px, 9vw, 110px) 24px;
  scroll-margin-top: calc(var(--nav-h) + 12px);
}

.section__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section__header {
  max-width: 44rem;
  margin-bottom: clamp(32px, 5vw, 52px);
}

.section__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--compass);
  margin-bottom: 14px;
}

.section__header h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.1rem, 4.5vw, 3.2rem);
  line-height: 1.02;
  letter-spacing: 0.015em;
  text-transform: uppercase;
  color: var(--canvas);
  margin-bottom: 16px;
}

.section__lede {
  color: var(--sage);
  font-size: 1.02rem;
}

.section__empty {
  margin-top: 8px;
  font-size: 0.92rem;
  color: var(--lichen);
}

.section__empty-reset {
  color: var(--compass);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Product grid & cards ---------- */

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
}

.product-card {
  display: flex;
  flex-direction: column;
  background: var(--pine);
  border: 1px solid var(--edge);
  border-radius: 10px;
  overflow: hidden;
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 500ms var(--ease-out),
    transform 500ms var(--ease-out),
    border-color 220ms var(--ease),
    box-shadow 320ms var(--ease);
}

.product-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.product-card:nth-child(2) { transition-delay: 70ms; }
.product-card:nth-child(3) { transition-delay: 140ms; }

.product-card:hover {
  border-color: var(--edge-strong);
  box-shadow: var(--shadow-lg);
}

/* Warm canvas stage so white-background product photos blend in */
.product-card__image {
  position: relative;
  aspect-ratio: 4 / 3;
  background: radial-gradient(circle at 50% 38%, #fbfaf6 0%, #eceadf 55%, #dcd9cb 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--edge);
}

.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 20px;
  mix-blend-mode: multiply;
  transition: transform 600ms var(--ease-out);
}

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

.product-card__info {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 10px;
  padding: 22px 22px 24px;
}

.product-card__kicker {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--compass);
}

.product-card__info h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.45rem;
  line-height: 1.1;
  letter-spacing: 0.015em;
  text-transform: uppercase;
  color: var(--canvas);
}

.product-card__review {
  font-size: 0.94rem;
  color: var(--sage);
}

.product-card__fits {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 8px;
  font-size: 0.85rem;
  color: var(--linen);
  margin-top: auto;
  padding-top: 6px;
}

.product-card__fits-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lichen);
}

/* R1 generation indicator — Gen 1 (2022–2024) vs Gen 2 (2025+) fitment
   differs for mats, PPF, wireless pads, cabin filters, etc. */
.gen-badge {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--sage);
  border: 1px solid var(--edge-strong);
  border-radius: 3px;
  padding: 2px 8px;
  align-self: center;
}

/* ---------- CTA button ---------- */

/* Row of CTAs for gen-split or paired products */
.product-card__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.product-card__ctas .cta-button {
  margin-top: 0;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--forest);
  background: var(--compass);
  padding: 12px 24px;
  border-radius: 4px;
  min-height: 44px;
  margin-top: 8px;
  transition: background 180ms var(--ease), box-shadow 220ms var(--ease), transform 180ms var(--ease);
}

.cta-button:hover {
  background: var(--compass-hot);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(240, 180, 41, 0.22);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  position: relative;
  background: var(--pine-2);
  border-top: 1px solid var(--edge);
  margin-top: 60px;
  padding: clamp(48px, 7vw, 72px) 24px 40px;
}

.site-footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.site-footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  flex-wrap: wrap;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--edge);
  margin-bottom: 32px;
}

.site-footer__logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--canvas);
  margin-bottom: 6px;
}

.site-footer__tagline {
  font-size: 0.92rem;
  color: var(--lichen);
}

.site-footer__links {
  display: flex;
  gap: 8px 22px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--sage);
}

.site-footer__links a {
  transition: color 160ms var(--ease);
}

.site-footer__links a:hover {
  color: var(--compass);
}

.site-footer__disclaimer {
  max-width: 62rem;
  display: grid;
  gap: 12px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--lichen);
  margin-bottom: 28px;
}

.site-footer__disclaimer strong {
  color: var(--sage);
}

.site-footer__copyright {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--lichen);
}

/* ==========================================================================
   404
   ========================================================================== */

.error-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
  position: relative;
  overflow: hidden;
}

.error-page__code {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(6rem, 20vw, 12rem);
  line-height: 1;
  color: var(--compass);
  letter-spacing: 0.04em;
}

.error-page__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--canvas);
  margin: 10px 0 14px;
}

.error-page__sub {
  max-width: 26rem;
  color: var(--sage);
  margin-bottom: 32px;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 900px) {
  .category-nav__brand span {
    display: none;
  }
}

@media (max-width: 720px) {
  .hero {
    padding: 72px 20px 120px;
    align-items: flex-end;
  }

  .section {
    padding-left: 20px;
    padding-right: 20px;
  }

  .category-nav__inner {
    gap: 12px;
    padding: 8px 16px;
    flex-wrap: wrap;
  }

  .category-nav__filter {
    margin-left: 0;
    order: 3;
  }

  .product-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .treeline--divider svg {
    height: 32px;
  }

  .site-footer__top {
    flex-direction: column;
  }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .product-card {
    opacity: 1;
    transform: none;
  }
}