/* ============================================================
   ZENITH LABS — Components
   Swiss: squared corners, hairline rules, decisive states.
   Every component reads --fg/--bg so it works on either ground.
   ============================================================ */

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

.btn {
  --btn-bg: var(--red);
  --btn-fg: #fff;
  --btn-bd: var(--red);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7em;
  padding: 15px 30px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--r-1);
  font-family: var(--ff-mono);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background var(--t-fast) var(--e-inout),
    border-color var(--t-fast) var(--e-inout),
    color var(--t-fast) var(--e-inout),
    transform var(--t-fast) var(--e-swiss),
    box-shadow var(--t-base) var(--e-swiss);
}

.btn:hover {
  --btn-bg: var(--red-hot);
  --btn-bd: var(--red-hot);
  transform: translate3d(0, -2px, 0);
  box-shadow: var(--sh-red);
}
.btn:active { transform: translate3d(0, 0, 0); --btn-bg: var(--red-deep); }

.btn[disabled], .btn[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
}

/* Outline — inherits the ground */
.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--fg);
  --btn-bd: var(--rule);
}
.btn--ghost:hover {
  --btn-bg: var(--fg);
  --btn-fg: var(--bg);
  --btn-bd: var(--fg);
  box-shadow: none;
}

/* Solid ink/bone — the high-contrast secondary */
.btn--solid {
  --btn-bg: var(--fg);
  --btn-fg: var(--bg);
  --btn-bd: var(--fg);
}
.btn--solid:hover {
  --btn-bg: var(--red);
  --btn-bd: var(--red);
  --btn-fg: #fff;
}

.btn--lg  { padding: 20px 38px; font-size: var(--fs-xs); letter-spacing: 0.22em; }
.btn--sm  { padding: 11px 18px; font-size: var(--fs-micro); letter-spacing: 0.18em; }
.btn--block { width: 100%; }

/* Arrow that advances on hover */
.btn__arrow {
  display: inline-block;
  transition: transform var(--t-base) var(--e-out);
}
.btn:hover .btn__arrow { transform: translateX(4px); }

/* Text link with a trailing rule */
.tlink {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--ff-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg);
  padding-block: 4px;
}
.tlink::after {
  content: "";
  width: 26px; height: 1px;
  background: currentColor;
  transition: width var(--t-base) var(--e-out);
}
.tlink:hover::after { width: 42px; }

/* ---------------- Announcement bar ---------------- */

.announce {
  background: var(--ink);
  color: var(--tx-mid-d);
  border-bottom: 1px solid var(--ink-4);
  font-family: var(--ff-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.announce__in {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-5);
  min-height: 34px;
  padding-inline: var(--gutter);
  text-align: center;
}
.announce b { color: var(--bone); font-weight: 500; }
.announce .dot { color: var(--red); }

@media (max-width: 720px) {
  .announce__in > .announce__opt { display: none; }
}

/* ---------------- Header ---------------- */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: transparent;
  transition:
    background var(--t-base) var(--e-inout),
    border-color var(--t-base) var(--e-inout),
    color var(--t-base) var(--e-inout);
  border-bottom: 1px solid transparent;
}

/* Ground-adaptive: JS sets these as the header crosses sections */
.header[data-on="dark"] {
  color: var(--tx-hi-d);
  --fg: var(--tx-hi-d);
  --fg-mid: var(--tx-mid-d);
  --fg-lo: var(--tx-lo-d);
  --bg: var(--ink);
  --rule: var(--ink-4);
}
.header[data-on="light"] {
  color: var(--tx-hi);
  --fg: var(--tx-hi);
  --fg-mid: var(--tx-mid);
  --fg-lo: var(--tx-lo);
  --bg: var(--bone);
  --rule: var(--bone-3);
}

.header.is-stuck {
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--rule);
}
.header[data-on="dark"].is-stuck {
  background: color-mix(in srgb, #0F1114 88%, transparent);
  border-bottom-color: var(--ink-4);
}
.header[data-on="light"].is-stuck {
  background: color-mix(in srgb, #F4F4F1 90%, transparent);
  border-bottom-color: var(--bone-3);
}

.header__in {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--s-5);
  min-height: 74px;
  padding-inline: var(--gutter);
  max-width: var(--maxw);
  margin-inline: auto;
}

.header__brand { display: flex; align-items: center; gap: 10px; }

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--s-6);
  justify-content: center;
}
.header__nav a {
  font-family: var(--ff-mono);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.82;
  transition: opacity var(--t-fast) var(--e-inout);
}
.header__nav a:hover { opacity: 1; }

.header__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--s-4);
}

.icon-btn {
  position: relative;
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: var(--r-1);
  transition: background var(--t-fast) var(--e-inout);
}
.icon-btn:hover { background: color-mix(in srgb, currentColor 10%, transparent); }

.cart-count {
  position: absolute;
  top: 3px; right: 2px;
  min-width: 17px; height: 17px;
  padding-inline: 4px;
  display: grid; place-items: center;
  background: var(--red);
  color: #fff;
  border-radius: var(--r-pill);
  font-family: var(--ff-mono);
  font-size: 9px;
  font-weight: 600;
  line-height: 1;
  transform: scale(0);
  transition: transform var(--t-base) var(--e-swiss);
}
.cart-count.is-on { transform: scale(1); }

.nav-toggle { display: none; }

@media (max-width: 940px) {
  .header__in { grid-template-columns: auto 1fr auto; min-height: 62px; }
  .nav-toggle { display: grid; }

  /* Nav becomes a panel under the bar. Uses the header's own ground tokens
     so it stays legible over both the dark hero and the light sections. */
  .header__nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--s-2) var(--gutter) var(--s-5);
    background: var(--bg);
    border-bottom: 1px solid var(--rule);
    clip-path: inset(0 0 100% 0);
    transition: clip-path var(--t-base) var(--e-out);
    pointer-events: none;
  }
  .header__nav a {
    padding: 17px 0;
    font-size: var(--fs-sm);
    letter-spacing: 0.2em;
    border-bottom: 1px solid var(--rule);
  }
  .header__nav a:last-child { border-bottom: 0; }

  .header.is-nav-open .header__nav {
    clip-path: inset(0 0 0 0);
    pointer-events: auto;
  }
  .header.is-nav-open {
    background: var(--bg);
    border-bottom-color: transparent;
  }
}

/* Page reading-progress hairline */
.progress-rail {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left center;
  z-index: 1;
}

/* ---------------- Logo mark ---------------- */

.mark-cross {
  display: block;
  width: 22px; height: 22px;
  background: var(--red);
  position: relative;
  flex: none;
}
.mark-cross::before,
.mark-cross::after {
  content: "";
  position: absolute;
  background: #fff;
  left: 50%; top: 50%;
}
.mark-cross::before { width: 3.4px; height: 11px; transform: translate(-50%, -50%); }
.mark-cross::after  { width: 11px; height: 3.4px; transform: translate(-50%, -50%); }

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

.card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--r-2);
  padding: var(--s-6);
  transition:
    border-color var(--t-base) var(--e-swiss),
    box-shadow var(--t-base) var(--e-swiss),
    transform var(--t-base) var(--e-swiss);
}
.card:hover { border-color: color-mix(in srgb, var(--red) 40%, var(--rule)); }

/* Pillar — the 4 brand pillars */
.pillar {
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  padding: var(--s-6) 0;
  border-top: 1px solid var(--rule);
}
.pillar__icon { width: 34px; height: 34px; color: var(--red); }
.pillar__t {
  font-family: var(--ff-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  font-weight: 500;
}
.pillar__d { font-size: var(--fs-sm); color: var(--fg-mid); line-height: 1.6; }

/* ---------------- Product card ---------------- */

.pcard {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--r-2);
  overflow: hidden;
  transition:
    border-color var(--t-base) var(--e-swiss),
    box-shadow var(--t-base) var(--e-swiss),
    transform var(--t-base) var(--e-swiss);
}
.pcard:hover {
  border-color: color-mix(in srgb, var(--red) 45%, var(--rule));
  box-shadow: var(--sh-2);
  transform: translate3d(0, -4px, 0);
}

.pcard__media {
  position: relative;
  display: grid;
  place-items: center;
  padding: var(--s-6) var(--s-4) var(--s-4);
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--fg) 3%, transparent),
    transparent 70%);
}
.pcard__media .vial {
  height: 200px; width: auto;
  transition: transform var(--t-slow) var(--e-out);
}
.pcard:hover .pcard__media .vial { transform: translateY(-8px) scale(1.03); }

.pcard__purity {
  position: absolute;
  top: var(--s-4); right: var(--s-4);
  font-family: var(--ff-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  color: var(--fg-lo);
  border: 1px solid var(--rule);
  padding: 4px 7px;
  border-radius: var(--r-1);
}

.pcard__body {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  padding: var(--s-5);
  border-top: 1px solid var(--rule);
  flex: 1;
}
.pcard__name {
  font-family: var(--ff-body);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.pcard__strength { color: var(--red); font-size: var(--fs-sm); font-weight: 500; }
.pcard__meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px var(--s-4);
  font-family: var(--ff-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.06em;
  color: var(--fg-lo);
}
.pcard__meta dt { text-transform: uppercase; }
.pcard__meta dd { margin: 0; color: var(--fg-mid); text-align: right; }

.pcard__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  margin-top: auto;
  padding-top: var(--s-4);
}
@media (max-width: 620px) {
  .pcard__foot {
    flex-direction: column;
    align-items: stretch;
    gap: var(--s-3);
  }
  .pcard__foot .btn { width: 100%; justify-content: center; }
  .pcard__price small { display: inline; margin-left: 6px; }
}
.pcard__price {
  font-size: 1.15rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.pcard__price small {
  display: block;
  font-family: var(--ff-mono);
  font-size: var(--fs-micro);
  font-weight: 400;
  color: var(--fg-lo);
  letter-spacing: 0.08em;
}

/* ---------------- Stat ---------------- */

.stat { display: flex; flex-direction: column; gap: var(--s-2); }
.stat {  min-width: 0; }
.stat__n {
  font-family: var(--ff-display);
  font-weight: 300;
  /* Was 5.5vw (79px @1440) against a ~178px cell — the unit pushed it past the
     edge and clipped. Sized to fit the narrowest cell, with the unit demoted. */
  font-size: clamp(1.9rem, 3.3vw, 3.1rem);
  line-height: 1;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.stat__n .u {
  color: var(--red);
  font-size: 0.52em;
  letter-spacing: 0;
  margin-left: 0.06em;
}
.stat__l {
  font-family: var(--ff-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-lo);
}

/* ---------------- Spec table ---------------- */

.spec {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
}
.spec th, .spec td {
  text-align: left;
  padding: 13px 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.spec th {
  color: var(--fg-lo);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  width: 40%;
}
.spec td { color: var(--fg); letter-spacing: 0.04em; word-break: break-word; }

/* ---------------- Accordion / FAQ ---------------- */

.acc { border-top: 1px solid var(--rule); }
.acc__item { border-bottom: 1px solid var(--rule); }
.acc__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
  padding: var(--s-5) 0;
  text-align: left;
  font-size: var(--fs-lead);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--fg);
  transition: color var(--t-fast) var(--e-inout);
}
.acc__btn:hover { color: var(--red); }
.acc__sign {
  position: relative;
  flex: none;
  width: 15px; height: 15px;
}
.acc__sign::before,
.acc__sign::after {
  content: "";
  position: absolute;
  background: currentColor;
  left: 50%; top: 50%;
  transition: transform var(--t-base) var(--e-swiss);
}
.acc__sign::before { width: 15px; height: 1.5px; transform: translate(-50%, -50%); }
.acc__sign::after  { width: 1.5px; height: 15px; transform: translate(-50%, -50%); }
.acc__btn[aria-expanded="true"] .acc__sign::after { transform: translate(-50%, -50%) scaleY(0); }

.acc__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--t-slow) var(--e-out);
}
.acc__panel[data-open="true"] { grid-template-rows: 1fr; }
.acc__panel > div { overflow: hidden; }
.acc__panel p {
  padding-bottom: var(--s-5);
  color: var(--fg-mid);
  max-width: 70ch;
  font-size: var(--fs-sm);
  line-height: 1.7;
}

/* ---------------- Form fields ---------------- */

.field {
  width: 100%;
  padding: 14px 16px;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: var(--r-1);
  color: var(--fg);
  font-family: var(--ff-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.06em;
  transition: border-color var(--t-fast) var(--e-inout);
}
.field::placeholder { color: var(--fg-lo); }
.field:focus { border-color: var(--red); outline: none; }

/* ---------------- Cart drawer ---------------- */

.scrim {
  position: fixed;
  inset: 0;
  background: rgba(9, 11, 13, 0.55);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  z-index: var(--z-drawer);
  transition: opacity var(--t-base) var(--e-inout), visibility var(--t-base);
}
.scrim.is-open { opacity: 1; visibility: visible; }

.drawer {
  position: fixed;
  top: 0; right: 0;
  height: 100dvh;
  width: min(430px, 100vw);
  background: var(--bone);
  color: var(--tx-hi);
  z-index: calc(var(--z-drawer) + 1);
  display: flex;
  flex-direction: column;
  transform: translate3d(101%, 0, 0);
  transition: transform var(--t-slow) var(--e-out);
  box-shadow: -18px 0 60px rgba(9, 11, 13, 0.22);
}
.drawer.is-open { transform: translate3d(0, 0, 0); }

.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-5);
  border-bottom: 1px solid var(--bone-3);
}
.drawer__body { flex: 1; overflow-y: auto; padding: var(--s-5); }
.drawer__foot { border-top: 1px solid var(--bone-3); padding: var(--s-5); }

.citem {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  gap: var(--s-4);
  align-items: center;
  padding-block: var(--s-4);
  border-bottom: 1px solid var(--bone-3);
}
.citem .vial { height: 74px; width: auto; margin-inline: auto; }

.qty {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--bone-3);
  border-radius: var(--r-1);
}
.qty button {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  font-size: 15px;
  color: var(--tx-mid);
  transition: color var(--t-fast), background var(--t-fast);
}
.qty button:hover { color: var(--red); background: var(--red-wash); }
.qty span {
  min-width: 30px;
  text-align: center;
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-variant-numeric: tabular-nums;
}

/* ---------------- Sticky mobile add-to-cart ---------------- */

.sticky-buy {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: var(--z-sticky);
  display: none;
  gap: var(--s-3);
  align-items: center;
  padding: 11px var(--s-4) calc(11px + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--bone) 94%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--bone-3);
  transform: translate3d(0, 110%, 0);
  transition: transform var(--t-slow) var(--e-out);
}
.sticky-buy.is-on { transform: translate3d(0, 0, 0); }
@media (max-width: 820px) { .sticky-buy { display: flex; } }

/* ---------------- 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);
}
.marquee__t {
  display: flex;
  width: max-content;
  animation: slide 44s linear infinite;
}
.marquee:hover .marquee__t { animation-play-state: paused; }
@keyframes slide { to { transform: translateX(-50%); } }

.marquee__i {
  display: inline-flex;
  align-items: center;
  gap: 0.75em;
  padding-inline: var(--s-6);
  font-family: var(--ff-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-mid);
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  .marquee__t { animation: none; }
  .marquee {
    overflow-x: auto;
    mask-image: none; -webkit-mask-image: none;
  }
}

/* ---------------- Badge / pill ---------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 6px 11px;
  border: 1px solid var(--rule);
  border-radius: var(--r-1);
  font-family: var(--ff-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-mid);
}
.badge--red { border-color: var(--red); color: var(--red); }
.badge--ok  { border-color: #1E7F4F; color: #1E7F4F; }

/* ---------------- Toast ---------------- */

.toast {
  position: fixed;
  left: 50%; bottom: 26px;
  transform: translate(-50%, 130%);
  z-index: var(--z-toast);
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: 13px 20px;
  background: var(--ink);
  color: var(--bone);
  border-radius: var(--r-1);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  box-shadow: var(--sh-3);
  transition: transform var(--t-slow) var(--e-out);
}
.toast.is-on { transform: translate(-50%, 0); }