/*
Theme Name: KC BioLabs
Theme URI: https://kcbiolabs.com
Author: KC BioLabs
Description: Custom WooCommerce theme for KC BioLabs — research-use-only compounds. Premium clinical aesthetic: light, refined, trustworthy.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: Proprietary
Text Domain: kc-biolabs
*/

/* ============================================================
   DESIGN TOKENS — KC BioLabs
   Sourced from BUILDS/kc-biolabs/tokens.css
   ============================================================ */
:root {
  --color-primary:        #3579AE;  /* Deep blue */
  --color-primary-dk:     #2a608b;
  --color-primary-medium: #4786AD;  /* Medium blue */
  --color-primary-light:  #84AFC2;  /* Light blue */
  --color-secondary:      #E1EBE6;  /* Pale mint/gray */
  --color-accent:         #7FB36E;  /* Green */
  --color-accent-dk:      #6b9b5c;
  --color-accent-light:   #B0CFA2;  /* Light green */
  --color-bg:             #ffffff;
  --color-surface:        #ffffff;
  --color-surface-alt:    #f3f7f5;
  --color-border:         rgba(20,40,60,0.08);
  --color-border-strong:  rgba(20,40,60,0.18);
  --color-text:           #1a2733;
  --color-text-muted:     #566270;
  --color-text-dim:       #8a94a0;

  --font-heading: 'Montserrat', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body:    'Montserrat', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --space-section-desktop: 80px;
  --space-section-tablet:  56px;
  --space-section-mobile:  40px;
  --space-container-x:     10px;

  --radius-0: 0;
  --shadow-none: none;

  --btn-height: 48px;
}

/* ============================================================
   BASE / RESET
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dk); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(36px, 5.5vw, 64px); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: clamp(24px, 3.5vw, 40px); }
h3 { font-size: clamp(20px, 2.5vw, 24px); }
p  { margin: 0 0 1em; }

.accent-word { color: var(--color-primary); border-bottom: 2px solid var(--color-accent); padding-bottom: 2px; }

/* ============================================================
   LAYOUT — containers, sections
   ============================================================ */
.kc-container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 640px) { .kc-container { padding: 0 16px; } }
.kc-section { padding: var(--space-section-desktop) 0; }
@media (max-width: 1024px) { .kc-section { padding: var(--space-section-tablet) 0; } }
@media (max-width: 640px)  { .kc-section { padding: var(--space-section-mobile) 0; } }

/* ============================================================
   BUTTONS — solid teal, sharp, ≥48px tall
   ============================================================ */
.kc-btn, .button, .wp-block-button__link, .woocommerce a.button, .woocommerce button.button, .woocommerce .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--btn-height);
  padding: 0 24px;
  background: var(--color-primary);
  color: #fff !important;
  border: none;
  border-radius: var(--radius-0);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 0.15s ease, transform 0.15s ease;
  cursor: pointer;
  touch-action: manipulation;
}
.kc-btn:hover, .button:hover, .wp-block-button__link:hover, .woocommerce a.button:hover, .woocommerce button.button:hover {
  background: var(--color-primary-dk);
  color: #fff !important;
}
.kc-btn--ghost {
  background: transparent;
  color: var(--color-primary) !important;
  border: 1px solid var(--color-primary);
}
.kc-btn--ghost:hover { background: var(--color-primary); color: #fff !important; }
.kc-btn--accent { background: var(--color-accent); }
.kc-btn--accent:hover { background: var(--color-accent-dk); }
.kc-btn--block { width: 100%; }

/* ============================================================
   TRUST STRIP (above header) — 11px navy/teal bg
   ============================================================ */
.kc-trust {
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 7px 0;
}
.kc-trust__row { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; }
.kc-trust__item { display: inline-flex; align-items: center; gap: 6px; }
.kc-trust__dot { width: 4px; height: 4px; border-radius: 50%; background: var(--color-accent); display: inline-block; }
@media (max-width: 640px) {
  .kc-trust { font-size: 10px; }
  .kc-trust__row { gap: 12px; }
}

/* ============================================================
   HEADER — single 64px row mobile
   ============================================================ */
.kc-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}
.kc-header__row { display: flex; align-items: center; justify-content: space-between; height: 96px; gap: 16px; }
.kc-header__logo img { height: 66px; width: auto; }
.kc-nav { display: flex; gap: 28px; align-items: center; list-style: none; padding: 0; margin: 0; }
.kc-nav ul { list-style: none; padding: 0; margin: 0; display: flex; gap: 28px; align-items: center; }
.kc-nav li { list-style: none; margin: 0; padding: 0; }
.kc-nav a {
  white-space: nowrap;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}
.kc-nav a:hover { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.kc-header__actions { display: flex; align-items: center; gap: 8px; }
.kc-header__account {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  height: 40px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
  white-space: nowrap;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.kc-header__account:hover { color: #fff; background: var(--color-primary); border-color: var(--color-primary); }
.kc-header__account svg { display: inline-block; }
@media (max-width: 640px) {
  .kc-header__account-label { display: none; }
  .kc-header__account { padding: 0 10px; }
}
.kc-cart-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text);
}
.kc-cart-icon__count {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  background: var(--color-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.kc-hamburger {
  display: none;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 10px;
}
.kc-hamburger span { display: block; height: 2px; background: var(--color-text); }
@media (max-width: 900px) {
  .kc-nav { display: none; }
  .kc-hamburger { display: inline-flex; }
  .kc-header__row { height: 84px; }
  .kc-header__logo img { height: 60px; }
}

/* Mobile drawer */
.kc-mobile-nav {
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  height: 100dvh;
  width: min(320px, 80vw);
  background: var(--color-bg);
  z-index: 100;
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  border-right: 1px solid var(--color-border);
  padding: 24px;
  overflow-y: auto;
}
.kc-mobile-nav.is-open { transform: translateX(0); }
.kc-mobile-nav a { display: block; padding: 14px 0; font-family: var(--font-heading); font-size: 18px; color: var(--color-text); border-bottom: 1px solid var(--color-border); }
.kc-mobile-nav__close { background: none; border: none; padding: 0; margin-bottom: 24px; font-size: 24px; }
.kc-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 99;
  opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
.kc-overlay.is-open { opacity: 1; pointer-events: auto; }

/* ============================================================
   HERO — centered text + CTA stacked
   ============================================================ */
.kc-hero {
  position: relative;
  padding: clamp(64px, 10vw, 120px) 0 clamp(48px, 8vw, 96px);
  background-image: linear-gradient(90deg, rgba(255,255,255,0.92) 0%, rgba(255,255,255,0.7) 45%, rgba(255,255,255,0.25) 100%), url('assets/images/hero-bg.jpg');
  background-size: cover;
  background-position: center right;
  background-repeat: no-repeat;
  text-align: center;
  overflow: hidden;
}
@media (max-width: 900px) {
  .kc-hero {
    background-image: linear-gradient(180deg, rgba(255,255,255,0.96) 0%, rgba(255,255,255,0.85) 100%), url('assets/images/hero-bg.jpg');
  }
}
.kc-hero__eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 20px;
  padding: 6px 12px;
  background: rgba(53,121,174,0.08);
}
.kc-hero h1 {
  max-width: 800px;
  margin: 0 auto 20px;
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.kc-hero p.kc-hero__lede {
  max-width: 640px;
  margin: 0 auto 32px;
  font-size: clamp(16px, 1.6vw, 18px);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.kc-hero__cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
@media (max-width: 540px) {
  .kc-hero__cta-row { flex-direction: column; align-items: stretch; padding: 0 24px; }
  .kc-hero__cta-row .kc-btn { width: 100%; }
}

/* ============================================================
   FEATURED / PRODUCT GRID
   ============================================================ */
.brand-shop-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 1200px) { .brand-shop-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; } }
@media (max-width: 900px)  { .brand-shop-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
@media (max-width: 540px)  { .brand-shop-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; } }

.brand-sc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, border-color 0.15s ease;
  position: relative;
}
.brand-sc:hover { transform: translateY(-3px); border-color: var(--color-primary); }
.brand-sc a.brand-sc__link { display: block; color: inherit; }
.brand-sc__img-wrap {
  aspect-ratio: 1/1;
  background: var(--color-secondary);
  overflow: hidden;
}
.brand-sc__img-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; }
.brand-sc__body { padding: 16px 16px 0; flex: 1; }
.brand-sc__title { font-family: var(--font-heading); font-size: 16px; font-weight: 600; margin: 0 0 6px; color: var(--color-text); line-height: 1.3; }
.brand-sc__price { font-family: var(--font-body); font-size: 15px; color: var(--color-primary); font-weight: 600; margin-bottom: 14px; }
.brand-sc__price del { color: var(--color-text-dim); margin-right: 6px; font-weight: 400; }
.brand-sc__atc-wrap { padding: 0 16px 16px; }
.brand-sc__atc {
  display: block;
  width: 100%;
  min-height: var(--btn-height);
  background: var(--color-primary);
  color: #fff !important;
  text-align: center;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: var(--btn-height);
  text-decoration: none;
}
.brand-sc__atc:hover { background: var(--color-primary-dk); color: #fff !important; }

.brand-grid-empty {
  text-align: center;
  padding: 64px 24px;
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
  border: 1px dashed var(--color-border-strong);
}
.brand-grid-empty h3 { color: var(--color-text); margin-bottom: 8px; }

/* ============================================================
   SHOP ARCHIVE — sidebar on RIGHT
   ============================================================ */
.kc-shop {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  padding: 48px 0;
}
@media (max-width: 1024px) { .kc-shop { grid-template-columns: 1fr; } }
.kc-shop__main { min-width: 0; }
.kc-shop__sidebar { background: var(--color-surface-alt); padding: 24px; border: 1px solid var(--color-border); }
.kc-shop__sidebar h4 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; margin: 0 0 14px; color: var(--color-text-muted); }
.kc-shop__search { width: 100%; padding: 10px 12px; background: #fff; border: 1px solid var(--color-border-strong); margin-bottom: 24px; font-size: 14px; }
.kc-shop__cats { list-style: none; padding: 0; margin: 0; }
.kc-shop__cats li { padding: 6px 0; border-bottom: 1px solid var(--color-border); }
.kc-shop__cats a { color: var(--color-text); font-size: 14px; }
.kc-shop__cats a:hover { color: var(--color-primary); }

/* ============================================================
   SINGLE PRODUCT — Revive-style 2-col + sticky bottom bar
   ============================================================ */
.woocommerce div.product { padding: 32px 0 64px; }
.woocommerce div.product div.images { margin-bottom: 0; }
.woocommerce div.product div.images img { background: var(--color-secondary); }
.woocommerce div.product .product_title { font-size: clamp(28px, 4vw, 40px); margin-bottom: 8px; }
.woocommerce div.product .price { color: var(--color-primary); font-size: 24px; font-weight: 600; margin-bottom: 16px; }
.woocommerce div.product .summary { font-size: 15px; }
.woocommerce-Tabs-panel h2 { display: none; }
.ruo-disclaimer-inline {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--color-secondary);
  border-left: 3px solid var(--color-primary);
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
}

.kc-sticky-atc {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 80;
  background: #fff;
  border-top: 1px solid var(--color-border);
  padding: 8px 12px;
  align-items: center;
  gap: 12px;
}
.kc-sticky-atc__info { flex: 1; min-width: 0; }
.kc-sticky-atc__name { font-family: var(--font-heading); font-size: 14px; font-weight: 600; color: var(--color-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kc-sticky-atc__price { font-size: 14px; color: var(--color-primary); font-weight: 600; }
.kc-sticky-atc__btn { min-width: 140px; }
@media (max-width: 900px) { body.single-product .kc-sticky-atc { display: flex; } body.single-product { padding-bottom: 80px; } }

/* ============================================================
   FOOTER — 4-col grid → 2×2 → 1
   ============================================================ */
.kc-footer { background: #3d6b30; /* deepened brand green (#7FB36E) for AA contrast on white text */ color: rgba(255,255,255,0.9); padding: 64px 0 24px; }
.kc-footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
@media (max-width: 1024px) { .kc-footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 640px)  { .kc-footer__grid { grid-template-columns: 1fr; gap: 28px; } }
.kc-footer h5 {
  color: #fff;
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 16px;
}
.kc-footer__links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.kc-footer__links a { color: rgba(255,255,255,0.7); font-size: 14px; }
.kc-footer__links a:hover { color: #fff; }
.kc-footer__brand p { color: rgba(255,255,255,0.6); font-size: 13px; line-height: 1.6; }
.kc-footer__brand img { height: 36px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.kc-footer__bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}
.kc-footer__ruo {
  text-align: center;
  margin-top: 16px;
  padding: 16px;
  background: rgba(0,0,0,0.2);
  color: rgba(255,255,255,0.7);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid rgba(255,255,255,0.08);
}

/* ============================================================
   AGE GATE
   ============================================================ */
.kc-age-gate {
  position: fixed; inset: 0; z-index: 999;
  background: rgba(18,34,32,0.96);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.kc-age-gate__card {
  background: #fff;
  max-width: 480px;
  width: 100%;
  padding: 40px 32px;
  text-align: center;
  border-top: 4px solid var(--color-primary);
}
.kc-age-gate__card h2 { margin-bottom: 12px; }
.kc-age-gate__card p { color: var(--color-text-muted); font-size: 15px; margin-bottom: 28px; }
.kc-age-gate__actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.kc-age-gate__actions .kc-btn { min-width: 140px; }

/* ============================================================
   GENERIC PAGE CONTENT
   ============================================================ */
.kc-page { padding: 56px 0 80px; }
.kc-page__title { text-align: center; margin-bottom: 32px; }
.kc-page__content { max-width: 760px; margin: 0 auto; font-size: 16px; line-height: 1.75; color: var(--color-text); }
.kc-page__content h2 { margin-top: 2em; }
.kc-page__content ul { padding-left: 1.4em; }
.kc-page__content li { margin-bottom: 0.5em; }

/* COA list */
.kc-coa-list { display: flex; flex-direction: column; gap: 12px; max-width: 720px; margin: 0 auto; }
.kc-coa-row { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; background: var(--color-surface-alt); border: 1px solid var(--color-border); gap: 16px; }
.kc-coa-row__name { font-family: var(--font-heading); font-weight: 600; color: var(--color-text); }
.kc-coa-row__sku { color: var(--color-text-dim); font-size: 13px; margin-left: 8px; }
.kc-coa-row .kc-btn { min-height: 40px; padding: 0 16px; font-size: 12px; }

/* About snippet */
.kc-about-snip { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 900px) { .kc-about-snip { grid-template-columns: 1fr; gap: 28px; } }
.kc-about-snip__copy h2 { margin-bottom: 14px; }
.kc-about-snip__img {
  background-color: var(--color-secondary);
  background-image: url('assets/images/about-photo.jpg');
  background-size: cover;
  background-position: center;
  aspect-ratio: 4/3;
}