/* ============================================================
   APEX PERFORMANCE LABS — Design System
   ============================================================ */

/* ---------- Base reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}
img, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"] { list-style: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }

/* ---------- Tokens ---------- */
:root {
  /* Surfaces */
  --black:        #05050a;
  --black-2:      #0a0a13;
  --black-3:      #0d0d19;
  --surface:      #12121f;
  --surface-2:    #171726;
  --border:       #232235;
  --divider:      #1b1a2a;

  /* Text */
  --text:         #f2f0f7;
  --muted:        #a29cb8;
  --faint:        #5f5a76;

  /* Brand accents */
  --magenta:        #ff2fb0;
  --magenta-light:  #ff8fd6;
  --magenta-dim:    rgba(255, 47, 176, 0.14);
  --cyan:           #2fe4ff;
  --cyan-light:     #8ff5ff;
  --cyan-dim:       rgba(47, 228, 255, 0.14);
  --red:            #e0455a;
  --red-dim:        rgba(224, 69, 90, 0.12);

  /* Type */
  --font-display: 'Clash Display', 'Satoshi', system-ui, sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;

  --text-xs:   clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm:   clamp(0.875rem, 0.82rem + 0.25vw, 0.95rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --text-xl:   clamp(1.5rem, 1.2rem + 1.1vw, 2.1rem);
  --text-2xl:  clamp(2rem, 1.3rem + 2.4vw, 3.4rem);
  --text-3xl:  clamp(2.6rem, 1.4rem + 3.6vw, 4.8rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --radius-sm: 3px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-full: 999px;

  --transition: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-glow-magenta: 0 0 24px rgba(255, 47, 176, 0.35);
  --shadow-glow-cyan: 0 0 24px rgba(47, 228, 255, 0.3);
  --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.5);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text);
  background: var(--black);
  overflow-x: hidden;
}

h1, h2, h3, h4 { font-family: var(--font-display); text-wrap: balance; line-height: 1.08; letter-spacing: -0.01em; }
p { text-wrap: pretty; max-width: 65ch; }

a { color: inherit; text-decoration: none; transition: color var(--transition); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: var(--radius-sm); }
::selection { background: rgba(255, 47, 176, 0.3); color: var(--text); }

.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section-eyebrow {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  margin-top: var(--space-3);
}

.title-underline {
  display: inline-block;
  height: 3px;
  width: 64px;
  margin-top: var(--space-4);
  background: linear-gradient(90deg, var(--magenta), var(--cyan));
  border-radius: var(--radius-full);
}

.section-sub {
  margin-top: var(--space-4);
  color: var(--muted);
  font-size: var(--text-base);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-sm);
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(90deg, var(--magenta), #ff5fc0);
  color: #17021c;
  box-shadow: var(--shadow-glow-magenta);
}
.btn-primary:hover { box-shadow: 0 0 34px rgba(255, 47, 176, 0.55); transform: translateY(-1px); }

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-secondary:hover { border-color: var(--cyan); color: var(--cyan-light); box-shadow: var(--shadow-glow-cyan); }

.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); }
.btn-block { width: 100%; justify-content: center; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
}
.pill-warning {
  color: var(--red);
  border: 1px solid rgba(224, 69, 90, 0.5);
  background: var(--red-dim);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(5, 5, 10, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--divider);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.logo svg { width: 38px; height: 38px; flex-shrink: 0; }
.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  line-height: 1;
  background: linear-gradient(90deg, var(--magenta-light), var(--cyan-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.logo-text small {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.55rem;
  letter-spacing: 0.28em;
  color: var(--muted);
  background: none;
  -webkit-text-fill-color: var(--muted);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.main-nav a {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  position: relative;
  padding-bottom: 4px;
}
.main-nav a:hover, .main-nav a.active { color: var(--cyan-light); }
.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 2px;
  background: var(--cyan);
  border-radius: var(--radius-full);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.cart-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  color: var(--text);
  transition: border-color var(--transition), color var(--transition);
}
.cart-btn:hover { border-color: var(--magenta); color: var(--magenta-light); }
.cart-btn svg { width: 20px; height: 20px; }
.cart-count {
  position: absolute;
  top: -6px; right: -6px;
  min-width: 18px; height: 18px;
  border-radius: var(--radius-full);
  background: var(--magenta);
  color: #17021c;
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-inline: 3px;
  box-shadow: 0 0 8px rgba(255, 47, 176, 0.6);
}

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}
.nav-toggle svg { width: 20px; height: 20px; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  padding-block: var(--space-24) var(--space-20);
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 50% at 15% 20%, var(--magenta-dim), transparent 60%),
    radial-gradient(ellipse 60% 50% at 85% 30%, var(--cyan-dim), transparent 60%),
    var(--black);
}
.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.hero-copy h1 {
  font-size: var(--text-3xl);
  font-weight: 600;
}
.hero-copy h1 .line-1 { display: block; color: var(--text); }
.hero-copy h1 .line-2 {
  display: block;
  background: linear-gradient(90deg, var(--magenta), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-copy .pill { margin-top: var(--space-6); }
.hero-cta { display: flex; align-items: center; gap: var(--space-5); margin-top: var(--space-8); flex-wrap: wrap; }

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }
.hero-visual::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(5,5,10,0.75) 100%);
}

/* ---------- Trust strip ---------- */
.trust-strip {
  background: var(--black-2);
  border-block: 1px solid var(--divider);
  padding-block: var(--space-8);
}
.trust-strip .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}
.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.trust-icon { font-size: 1.8rem; line-height: 1; flex-shrink: 0; }
.trust-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  color: var(--text);
}
.trust-item span {
  display: block;
  font-size: var(--text-xs);
  color: var(--muted);
  letter-spacing: 0.03em;
  margin-top: 2px;
}

/* ============================================================
   PRODUCTS
   ============================================================ */
.products-section { padding-block: var(--space-24); background: var(--black); }
.products-header { text-align: center; max-width: 640px; margin-inline: auto; }
.products-header .title-underline { margin-inline: auto; }

.product-grid {
  margin-top: var(--space-16);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease, border-color var(--transition);
}
.product-card.in-view { opacity: 1; transform: translateY(0); }
.product-card:hover { border-color: var(--faint); }

/* Vial visual (real per-product photo, name/dose printed on the label itself) */
.vial-visual {
  position: relative;
  aspect-ratio: 4 / 5;
  background: radial-gradient(ellipse at 50% 20%, #1a1a2c, var(--black-3) 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.vial-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
}

.top-pick-badge {
  position: absolute;
  top: var(--space-3); right: var(--space-3);
  z-index: 2;
  background: linear-gradient(90deg, var(--magenta), #ff7fd0);
  color: #17021c;
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px rgba(255, 47, 176, 0.5);
}

.product-info {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}
.product-name { font-family: var(--font-display); font-size: var(--text-base); font-weight: 600; }
.product-dose { font-size: var(--text-xs); color: var(--muted); letter-spacing: 0.02em; }

.size-pills {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  margin-top: var(--space-1);
}
.size-pill {
  font-size: var(--text-xs);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  color: var(--muted);
  transition: all var(--transition);
}
.size-pill.active {
  border-color: var(--cyan);
  color: var(--cyan-light);
  background: var(--cyan-dim);
}

.product-price {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text);
  margin-top: var(--space-1);
}
.product-price span { font-size: var(--text-xs); color: var(--muted); font-family: var(--font-body); font-weight: 400; }

.add-cart-btn {
  margin-top: var(--space-2);
  width: 100%;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
}
.add-cart-btn.added { background: linear-gradient(90deg, #2fe4ff, #8ff5ff); }

.product-desc { font-size: var(--text-xs); color: var(--muted); margin-top: var(--space-2); }
.desc-toggle {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--cyan);
  letter-spacing: 0.04em;
  margin-top: var(--space-2);
  align-self: flex-start;
}
.desc-toggle:hover { color: var(--cyan-light); }
.product-desc-long {
  font-size: var(--text-xs);
  color: var(--muted);
  margin-top: var(--space-2);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.product-desc-long.expanded { max-height: 220px; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--black-2);
  border-top: 1px solid var(--divider);
  padding-block: var(--space-16) var(--space-10);
}
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: var(--space-6); text-align: center; }
.footer-logo { display: flex; align-items: center; gap: var(--space-3); }
.footer-logo svg { width: 30px; height: 30px; }
.footer-nav { display: flex; gap: var(--space-8); }
.footer-nav a {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer-nav a:hover, .footer-nav a.active { color: var(--cyan-light); }

.footer-legal {
  max-width: 720px;
  font-size: var(--text-xs);
  color: var(--faint);
  line-height: 1.7;
  margin-top: var(--space-2);
}
.footer-copy { font-size: var(--text-xs); color: var(--faint); margin-top: var(--space-4); }

/* ============================================================
   AGE GATE MODAL
   ============================================================ */
.age-gate-overlay {
  position: fixed; inset: 0;
  z-index: 100;
  background: rgba(2, 2, 6, 0.92);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}
.age-gate-overlay[hidden] { display: none; }
.age-gate-card {
  max-width: 480px;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-8);
  text-align: center;
  box-shadow: 0 0 60px rgba(255, 47, 176, 0.15);
}
.age-gate-card .logo { justify-content: center; margin-bottom: var(--space-6); }
.age-gate-card h2 { font-size: var(--text-xl); font-weight: 600; }
.age-gate-card > p { margin: var(--space-4) auto 0; color: var(--muted); font-size: var(--text-sm); }
.age-checklist { list-style: none; text-align: left; margin-top: var(--space-6); display: flex; flex-direction: column; gap: var(--space-3); }
.age-checklist li { display: flex; gap: var(--space-3); font-size: var(--text-sm); color: var(--text); }
.age-checklist .check { color: var(--cyan); flex-shrink: 0; font-weight: 700; }
.age-gate-card .btn-primary { margin-top: var(--space-8); width: 100%; justify-content: center; }
.age-gate-exit {
  display: block;
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--faint);
  text-decoration: underline;
}
.age-gate-exit:hover { color: var(--red); }

/* ============================================================
   CART DRAWER
   ============================================================ */
.cart-overlay {
  position: fixed; inset: 0;
  background: rgba(2,2,6,0.6);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.cart-overlay.open { opacity: 1; pointer-events: auto; }

.cart-drawer {
  position: fixed;
  top: 0; right: 0;
  height: 100dvh;
  width: min(420px, 100%);
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 95;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}
.cart-drawer.open { transform: translateX(0); }

.cart-drawer-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--divider);
}
.cart-drawer-header h3 { font-size: var(--text-lg); font-weight: 600; }
.cart-close { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-md); }
.cart-close:hover { background: var(--surface-2); color: var(--red); }
.cart-close svg { width: 18px; height: 18px; }

.cart-items { flex: 1; overflow-y: auto; padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-4); }
.cart-empty { text-align: center; color: var(--muted); font-size: var(--text-sm); margin-top: var(--space-16); }
.cart-empty .emoji { font-size: 2rem; display: block; margin-bottom: var(--space-3); }

.cart-line {
  display: flex; align-items: center; gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--divider);
}
.cart-line-thumb {
  width: 52px; height: 52px; border-radius: var(--radius-md);
  background: radial-gradient(ellipse at 50% 20%, #1a1a2c, var(--black-3) 70%);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}
.cart-line-info { flex: 1; min-width: 0; }
.cart-line-info .name { font-family: var(--font-display); font-size: var(--text-sm); font-weight: 600; }
.cart-line-info .meta { font-size: var(--text-xs); color: var(--muted); margin-top: 2px; }
.cart-line-price { font-family: var(--font-display); font-size: var(--text-sm); font-weight: 600; white-space: nowrap; }
.cart-line-remove { color: var(--faint); font-size: var(--text-xs); margin-left: var(--space-2); }
.cart-line-remove:hover { color: var(--red); }

.cart-footer { padding: var(--space-6); border-top: 1px solid var(--divider); }
.cart-subtotal { display: flex; justify-content: space-between; font-family: var(--font-display); font-size: var(--text-base); font-weight: 600; margin-bottom: var(--space-4); }
.cart-note { font-size: var(--text-xs); color: var(--faint); margin-top: var(--space-3); text-align: center; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
}

@media (max-width: 860px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-strip .container { grid-template-columns: 1fr; gap: var(--space-5); }
}

@media (max-width: 480px) {
  .header-actions .btn { display: none; }
  .header-actions { gap: var(--space-2); }
  .site-header .container { padding-inline: var(--space-4); }
}

@media (max-width: 560px) {
  .product-grid { grid-template-columns: 1fr 1fr; gap: var(--space-4); }
  .hero { padding-block: var(--space-16) var(--space-12); }
  .footer-nav { flex-wrap: wrap; gap: var(--space-4); justify-content: center; }
  .cart-drawer { width: 100%; }
}

@media (max-width: 420px) {
  .product-grid { grid-template-columns: 1fr; }
}