/* ==========================================================================
   Rediza — Layout & shared components
   ========================================================================== */

/* --- Shell --------------------------------------------------------------- */

.shell {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.shell--text { max-width: var(--maxw-text); }
.shell--wide { max-width: 1680px; }

section { position: relative; }

.section {
  padding-block: var(--section-y);
  position: relative;
  overflow: clip;
}
.section--tight { padding-block: clamp(4rem, 7vw, 7rem); }
.section--flush  { padding-block: 0; }

/* Hairline divider between stacked sections of the same colour */
.section--ruled { border-top: 1px solid var(--rule); }

/* --- Section heading block ----------------------------------------------- */

.head {
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
  max-width: 22ch;
}
.head--wide { max-width: 30ch; }
.head--center { max-width: 24ch; margin-inline: auto; text-align: center; align-items: center; }
.head--center .eyebrow { justify-content: center; }

.head-row {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: var(--s-8) var(--s-9);
  align-items: end;
}
@media (max-width: 900px) {
  .head-row { grid-template-columns: 1fr; align-items: start; gap: var(--s-6); }
}

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

.btn {
  --btn-bg: var(--fg);
  --btn-fg: var(--bg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  height: 50px;
  padding-inline: var(--s-6);
  border-radius: var(--radius-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: var(--fs-small);
  font-weight: 590;
  letter-spacing: -0.006em;
  white-space: nowrap;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  transition: transform var(--d-fast) var(--e-soft),
              opacity var(--d-fast) var(--e-soft);
}
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: currentColor;
  opacity: 0;
  z-index: -1;
  transition: opacity var(--d-fast) var(--e-soft);
}
.btn:hover::after { opacity: 0.12; }
.btn:active { transform: scale(0.97); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--fg);
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--fg) 36%, transparent);
  backdrop-filter: blur(12px);
}
.btn--ghost:hover::after { opacity: 0.08; }

.btn--accent {
  --btn-fg: #fff;
  background: linear-gradient(100deg, var(--ai-1), var(--ai-2));
  box-shadow: 0 8px 30px -8px var(--ai-glow);
}
.btn--trip {
  --btn-fg: #1a0c04;
  background: linear-gradient(100deg, var(--trip), var(--trip-2));
  box-shadow: 0 8px 30px -8px var(--trip-glow);
}

/* Tesla's uppercase micro-tracked CTA */
.btn--tesla {
  height: 46px;
  min-width: 260px;
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.btn-row { display: flex; flex-wrap: wrap; gap: var(--s-3); }
.btn-row--center { justify-content: center; }

/* Text link with an arrow that steps forward on hover */
.link {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-weight: 500;
  color: var(--fg);
  position: relative;
}
.link .arw {
  transition: transform var(--d-fast) var(--e-out);
  display: inline-block;
}
.link:hover .arw { transform: translateX(4px); }
.link::before {
  content: "";
  position: absolute;
  left: 0; bottom: -3px;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform var(--d-mid) var(--e-out);
}
.link:hover::before { transform: scaleX(1); transform-origin: left center; }
.link--accent { color: var(--ai-1); }
.link--trip { color: var(--trip); }

/* --- Navigation ---------------------------------------------------------- */

.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  color: #fff;
  transition: transform var(--d-mid) var(--e-out),
              background var(--d-mid) var(--e-soft),
              backdrop-filter var(--d-mid) var(--e-soft),
              color var(--d-mid) var(--e-soft);
}
.site-nav.is-stuck {
  background: color-mix(in oklab, var(--ink) 72%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.08);
}
.site-nav.is-hidden { transform: translateY(-100%); }
/* Over light sections the nav flips to dark ink */
.site-nav.is-inverted { color: var(--ink); }
.site-nav.is-inverted.is-stuck {
  background: color-mix(in oklab, var(--paper) 74%, transparent);
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.08);
}

.nav-inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  gap: var(--s-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.03em;
  flex: none;
}
.brand-mark { width: 23px; height: 23px; flex: none; color: inherit; overflow: visible; }
.brand-mark .bm-ring { transition: opacity var(--d-mid) var(--e-soft); }
.brand:hover .brand-mark .bm-pin { transform-box: fill-box; transform-origin: center; animation: pulse-ring 1.4s var(--e-out); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-6);
  margin-inline: auto;
  font-size: var(--fs-small);
  font-weight: 500;
}
.nav-links a {
  opacity: 0.72;
  transition: opacity var(--d-fast) var(--e-soft);
  position: relative;
}
.nav-links a:hover { opacity: 1; }
.nav-links a[aria-current="page"] { opacity: 1; }
.nav-links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -7px;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: currentColor;
  transform: translateX(-50%);
}

.nav-cta { display: flex; align-items: center; gap: var(--s-3); flex: none; }
.nav-cta .btn { height: 36px; padding-inline: var(--s-4); font-size: 0.8125rem; }

/* Hamburger */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  margin-right: calc(var(--s-3) * -1);
  place-items: center;
  flex: none;
}
.nav-toggle span {
  display: block;
  width: 19px; height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--d-mid) var(--e-out), opacity var(--d-fast) linear;
}
.nav-toggle span + span { margin-top: 5px; }
body.menu-open .nav-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
body.menu-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.menu-open .nav-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: grid; margin-left: auto; }
  .nav-cta { display: none; }
}

/* Full-screen menu */
.menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-menu);
  background: color-mix(in oklab, var(--ink) 92%, transparent);
  backdrop-filter: blur(28px) saturate(160%);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--nav-h) var(--gutter) var(--s-8);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--d-mid) var(--e-out), visibility 0s linear var(--d-mid);
}
body.menu-open .menu {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--d-mid) var(--e-out), visibility 0s;
}
.menu-list { display: flex; flex-direction: column; gap: var(--s-2); }
.menu-list a {
  font-size: clamp(2.25rem, 11vw, 3.5rem);
  font-weight: 600;
  letter-spacing: var(--tr-display);
  line-height: 1.1;
  display: block;
  transform: translateY(28px);
  opacity: 0;
  transition: transform var(--d-slow) var(--e-out) calc(var(--i) * 55ms + 60ms),
              opacity var(--d-mid) var(--e-out) calc(var(--i) * 55ms + 60ms);
}
body.menu-open .menu-list a { transform: none; opacity: 1; }
.menu-foot {
  margin-top: var(--s-8);
  padding-top: var(--s-5);
  border-top: 1px solid var(--t-faint);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-5);
  font-size: var(--fs-small);
  color: var(--t-mid);
}

/* --- Custom cursor ------------------------------------------------------- */

.cursor {
  position: fixed;
  top: 0; left: 0;
  z-index: var(--z-cursor);
  pointer-events: none;
  mix-blend-mode: difference;
  opacity: 0;
  transition: opacity var(--d-mid) var(--e-soft);
}
.cursor.is-ready { opacity: 1; }
.cursor-dot,
.cursor-ring {
  position: absolute;
  top: 0; left: 0;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  will-change: transform;
}
.cursor-dot { width: 5px; height: 5px; background: #fff; }
.cursor-ring {
  width: 34px; height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  transition: width var(--d-fast) var(--e-out),
              height var(--d-fast) var(--e-out),
              border-color var(--d-fast) var(--e-out),
              background var(--d-fast) var(--e-out);
}
.cursor.is-hot .cursor-ring {
  width: 60px; height: 60px;
  background: rgba(255, 255, 255, 0.12);
  border-color: transparent;
}
.cursor.is-hot .cursor-dot { opacity: 0; }

@media (hover: none), (pointer: coarse) {
  .cursor { display: none; }
}

/* --- Canvas layers ------------------------------------------------------- */

.canvas-layer {
  position: absolute;
  inset: 0;
  z-index: var(--z-canvas);
  pointer-events: none;
}
.canvas-layer canvas { width: 100%; height: 100%; }
.layer-content { position: relative; z-index: var(--z-content); }

/* --- Cards --------------------------------------------------------------- */

.card {
  position: relative;
  padding: var(--s-6);
  border-radius: var(--radius-l);
  background: color-mix(in oklab, var(--fg) 4%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--fg) 9%, transparent);
  overflow: hidden;
  isolation: isolate;
  transition: transform var(--d-mid) var(--e-out),
              background var(--d-mid) var(--e-soft);
}
.card:hover { transform: translateY(-4px); background: color-mix(in oklab, var(--fg) 7%, transparent); }

/* Cursor-tracked spotlight; --mx/--my written by main.js */
.card--glow::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  background: radial-gradient(
    340px circle at var(--mx, 50%) var(--my, 0%),
    color-mix(in oklab, var(--ai-1) 26%, transparent),
    transparent 70%
  );
  opacity: 0;
  transition: opacity var(--d-mid) var(--e-soft);
}
.card--glow:hover::before { opacity: 1; }

.card-num {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--fg-lo);
  letter-spacing: 0.1em;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--s-5);
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--s-5);
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--s-5);
}
@media (max-width: 1000px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* --- Metrics ------------------------------------------------------------- */

.metric { display: flex; flex-direction: column; gap: var(--s-2); }
.metric-val {
  font-size: clamp(2.75rem, 5.4vw, 4.75rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: var(--tr-display);
  font-variant-numeric: tabular-nums;
}
.metric-label {
  font-size: var(--fs-small);
  color: var(--fg-mid);
  max-width: 24ch;
}

/* --- Marquee ------------------------------------------------------------- */

.marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  padding-block: var(--s-5);
}
.marquee-track {
  display: flex;
  width: max-content;
  gap: var(--s-8);
  animation: marquee-x 38s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: var(--tr-head);
  color: var(--fg-lo);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--s-8);
}
.marquee-item::after {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
}

/* --- Scroll hint --------------------------------------------------------- */

.scroll-hint {
  position: absolute;
  bottom: var(--s-6);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-3);
  font-size: var(--fs-micro);
  letter-spacing: var(--tr-micro);
  text-transform: uppercase;
  color: var(--t-lo);
  z-index: var(--z-content);
}
.scroll-hint-rail {
  width: 1px; height: 46px;
  background: var(--t-faint);
  overflow: hidden;
  position: relative;
}
.scroll-hint-rail::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent, var(--t-hi), transparent);
  animation: scroll-hint 2.4s var(--e-inout) infinite;
}

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

.site-foot {
  background: var(--ink);
  color: var(--t-mid);
  padding-block: var(--s-9) var(--s-6);
  border-top: 1px solid var(--t-faint);
}
.foot-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: var(--s-8) var(--s-6);
  padding-bottom: var(--s-8);
}
@media (max-width: 900px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .foot-grid { grid-template-columns: 1fr; } }

.foot-brand { display: flex; flex-direction: column; gap: var(--s-4); max-width: 34ch; }
.foot-col h4 {
  font-size: var(--fs-micro);
  letter-spacing: var(--tr-micro);
  text-transform: uppercase;
  color: var(--t-lo);
  font-weight: 590;
  margin-bottom: var(--s-4);
}
.foot-col ul { display: flex; flex-direction: column; gap: var(--s-3); font-size: var(--fs-small); }
.foot-col a { transition: color var(--d-fast) var(--e-soft); }
.foot-col a:hover { color: var(--t-hi); }

.foot-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--s-4);
  padding-top: var(--s-5);
  border-top: 1px solid var(--t-faint);
  font-size: var(--fs-micro);
  color: var(--t-lo);
}

/* --- Utilities ----------------------------------------------------------- */

.stack   { display: flex; flex-direction: column; }
.gap-3   { gap: var(--s-3); }
.gap-4   { gap: var(--s-4); }
.gap-5   { gap: var(--s-5); }
.gap-6   { gap: var(--s-6); }
.gap-7   { gap: var(--s-7); }
.gap-8   { gap: var(--s-8); }
.mt-6    { margin-top: var(--s-6); }
.mt-7    { margin-top: var(--s-7); }
.mt-8    { margin-top: var(--s-8); }
.center  { text-align: center; }
.relative{ position: relative; }
.full-h  { min-height: 100svh; }