/* =========================================
   THE CHOSEN ONE PEPTIDES — Global Styles
   Art Direction: Sleek & Dark, Blue-silver accent
   ========================================= */

@import url('https://api.fontshare.com/v2/css?f[]=cabinet-grotesk@300,400,500,700,800&f[]=switzer@300,400,500,600&display=swap');

/* ---- Design Tokens ---- */
:root {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem + 0.25vw,  0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw,  1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.75vw,    1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem + 1.25vw,  2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem + 2.5vw,   3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem + 4vw,       5rem);
  --text-hero: clamp(3rem,     0.5rem + 7vw,      8rem);

  /* Spacing */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* Dark palette — Blue-silver peptide aesthetic */
  --color-bg:           #0a0b0d;
  --color-surface:      #0f1014;
  --color-surface-2:    #141519;
  --color-surface-3:    #1a1b21;
  --color-border:       #252730;
  --color-divider:      #1e1f26;

  --color-text:         #e8eaf0;
  --color-text-muted:   #8890a4;
  --color-text-faint:   #454a5c;
  --color-text-inverse: #0a0b0d;

  /* Electric blue accent */
  --color-primary:          #3b8ef5;
  --color-primary-hover:    #5ba3ff;
  --color-primary-active:   #2a70d4;
  --color-primary-glow:     rgba(59, 142, 245, 0.2);
  --color-primary-dim:      rgba(59, 142, 245, 0.1);

  /* Silver accent */
  --color-silver:         #a8b4c8;
  --color-silver-muted:   #5a657a;

  /* Semantic */
  --color-success: #34c77a;
  --color-error:   #f04d4d;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:   0 12px 40px rgba(0,0,0,0.6);
  --shadow-blue: 0 0 30px rgba(59, 142, 245, 0.25);

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body:    'Switzer', 'Helvetica Neue', sans-serif;

  /* Content widths */
  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:    1200px;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

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

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role='list'], ol[role='list'] { list-style: none; }

input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.1;
  font-family: var(--font-display);
  font-weight: 800;
}

p, li, figcaption {
  text-wrap: pretty;
  max-width: 70ch;
}

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

button {
  cursor: pointer;
  background: none;
  border: none;
}

::selection {
  background: var(--color-primary-dim);
  color: var(--color-text);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- Utility ---- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-12));
}

.container--narrow {
  max-width: var(--content-default);
}

/* ---- RUO Alert Bar ---- */
.ruo-bar {
  background: rgba(180, 30, 30, 0.12);
  border-bottom: 1px solid rgba(220, 60, 60, 0.25);
  color: #e8a0a0;
  font-size: var(--text-xs);
  font-weight: 500;
  text-align: center;
  padding: var(--space-2) var(--space-4);
  line-height: 1.5;
  letter-spacing: 0.01em;
  position: relative;
  z-index: 200;
}

.ruo-bar strong {
  color: #f0b0b0;
  font-weight: 700;
}

.ruo-bar__icon {
  margin-right: var(--space-2);
  font-size: 0.85em;
  opacity: 0.8;
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding-block: var(--space-4);
  background: rgba(10, 11, 13, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.nav--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.nav__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.1;
}

.nav__logo-sub {
  display: block;
  font-size: 0.65em;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav__links a {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-text);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.nav__cta:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-blue);
  transform: translateY(-1px);
}

/* Mobile nav */
.nav__toggle {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-surface);
    padding: var(--space-6);
    gap: var(--space-5);
    border-bottom: 1px solid var(--color-border);
    z-index: 99;
  }

  .nav__links.open { display: flex; }
  .nav__links a { font-size: var(--text-base); }
  .nav__toggle { display: flex; }
  .nav__cta { display: none; }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  border: none;
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-blue);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: none;
  padding-inline: var(--space-4);
}

.btn--ghost:hover {
  color: var(--color-text);
}

/* ---- Page Header (non-home pages) ---- */
.page-header {
  padding-top: calc(80px + var(--space-20));
  padding-bottom: var(--space-16);
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(59,142,245,0.08) 0%, transparent 70%);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.page-header__label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.page-header__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}

.page-header__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-inline: auto;
  line-height: 1.7;
}

/* ---- Section Labels ---- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--color-primary);
}

/* ---- Cards ---- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-blue);
  transform: translateY(-4px);
}

/* ---- Footer ---- */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-16) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.footer__brand-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 28ch;
  margin-bottom: var(--space-6);
}

.footer__col-title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition);
}

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

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer__disclaimer {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.5;
  max-width: 68ch;
  margin-bottom: var(--space-6);
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

/* ---- Glow Lines / Decorative ---- */
.glow-line {
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--color-primary), transparent);
  opacity: 0.4;
}

/* ---- Fade-in animation ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
  opacity: 0;
  animation: fadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fade-up-1 { animation-delay: 0.1s; }
.fade-up-2 { animation-delay: 0.22s; }
.fade-up-3 { animation-delay: 0.34s; }
.fade-up-4 { animation-delay: 0.46s; }
.fade-up-5 { animation-delay: 0.58s; }

/* ---- Scroll-reveal (JS toggled) ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Tag / Badge ---- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px var(--space-3);
  background: var(--color-primary-dim);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: var(--radius-full);
  border: 1px solid rgba(59, 142, 245, 0.2);
}

.tag--silver {
  background: rgba(168, 180, 200, 0.08);
  color: var(--color-silver);
  border-color: rgba(168, 180, 200, 0.15);
}

/* ---- Product card tiers (new pricing rows) ---- */
.product-card__tiers {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-block: var(--space-3);
}

.tier-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  gap: var(--space-3);
}

.tier-row--best {
  border-color: rgba(59,142,245,0.35);
  background: rgba(59,142,245,0.06);
}

.tier-qty {
  color: var(--color-text-muted);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.tier-price {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
}

.best-tag {
  font-size: 0.7em;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-dim);
  border: 1px solid rgba(59,142,245,0.2);
  padding: 2px 6px;
  border-radius: var(--radius-full);
}

/* ---- COA Section ---- */
.coa-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.coa-card {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.coa-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-blue);
  transform: translateY(-2px);
}

.coa-card__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-dim);
  border: 1px solid rgba(59,142,245,0.2);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  flex-shrink: 0;
}

.coa-card__body {
  flex: 1;
  min-width: 0;
}

.coa-card__name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.coa-card__meta {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 2px;
}

.coa-card__source {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.coa-card__arrow {
  color: var(--color-text-faint);
  flex-shrink: 0;
  transition: transform var(--transition), color var(--transition);
}

.coa-card:hover .coa-card__arrow {
  color: var(--color-primary);
  transform: translateX(4px);
}

.coa-note {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  font-style: italic;
  margin-top: var(--space-4);
}

@media (max-width: 640px) {
  .coa-grid { grid-template-columns: 1fr; }
}

/* ---- Form elements ---- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-base);
  font-family: var(--font-body);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-dim);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-faint);
}

.form-textarea { resize: vertical; min-height: 140px; }