/* PeptideProtocolHQ — design tokens pulled from brand logo */
:root {
  --navy: #16374F;
  --navy-deep: #0E2739;
  --teal-1: #2F9E8F;
  --teal-2: #5FCDB3;
  --slate: #5B7A94;
  --bg: #FAFAF8;
  --panel: #FFFFFF;
  --ink: #1A1F24;
  --ink-soft: #4B5563;
  --border: #E3E1DA;
  --radius: 10px;
  --max: 1120px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .display {
  font-family: 'Sora', 'Inter', sans-serif;
  color: var(--navy);
  line-height: 1.15;
  margin: 0 0 0.5em;
  font-weight: 700;
}

h1 { font-size: clamp(1.9rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 2.8vw, 2rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; max-width: 68ch; color: var(--ink-soft); }
a { color: var(--teal-1); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--teal-1);
  outline-offset: 2px;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky; top: 0; z-index: 20;
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 144px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 140px; display: block; }
.brand-word { font-family: 'Sora', sans-serif; font-weight: 700; font-size: 1.05rem; color: var(--navy); white-space: nowrap; }
.brand-word .hq { color: var(--slate); }

nav.main-nav { display: flex; gap: 28px; }
nav.main-nav a { color: var(--navy); font-weight: 600; font-size: 0.94rem; }
nav.main-nav a:hover { color: var(--teal-1); text-decoration: none; }

.nav-cta {
  background: var(--navy);
  color: #fff !important;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
}
.nav-cta:hover { background: var(--navy-deep); text-decoration: none; }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--navy); margin: 5px 0; }

/* Hero */
.hero { padding: 56px 0 40px; border-bottom: 1px solid var(--border); }
.hero .eyebrow-tag { color: var(--teal-1); font-weight: 700; font-size: 0.85rem; margin-bottom: 10px; display: block; }
.hero p.lede { font-size: 1.1rem; max-width: 56ch; }

.search-box {
  display: flex; gap: 8px; margin-top: 28px; max-width: 560px;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 6px;
}
.search-box input {
  flex: 1; border: none; padding: 12px 14px; font-size: 1rem; font-family: inherit;
  background: transparent; color: var(--ink);
}
.search-box input:focus { outline: none; }
.search-box button {
  background: var(--teal-1); color: #fff; border: none; border-radius: 6px;
  padding: 0 20px; font-weight: 600; cursor: pointer; font-size: 0.95rem;
}
.search-box button:hover { background: var(--teal-2); }

/* Chain divider - brand motif */
.chain-divider { display: flex; align-items: center; gap: 8px; margin: 44px 0 22px; }
.chain-divider .label { font-weight: 700; color: var(--navy); font-size: 1.05rem; white-space: nowrap; }
.chain-divider .link-line { flex: 1; height: 2px; background: linear-gradient(90deg, var(--teal-1), var(--teal-2), transparent); }

/* Category chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 8px; }
.chip {
  border: 1px solid var(--border); background: var(--panel); color: var(--navy);
  padding: 7px 14px; border-radius: 999px; font-size: 0.86rem; font-weight: 600; cursor: pointer;
}
.chip.active { background: var(--navy); color: #fff; border-color: var(--navy); }

/* Cards / grids */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 860px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px;
}
.card h3 { margin-bottom: 6px; font-size: 1.05rem; }
.card .cat-tag { font-size: 0.74rem; font-weight: 700; color: var(--teal-1); text-transform: uppercase; letter-spacing: 0.03em; }
.card p { font-size: 0.92rem; margin: 8px 0 0; }

/* A-Z directory table */
.az-jump { display: flex; flex-wrap: wrap; gap: 6px; margin: 18px 0 30px; position: sticky; top: 144px; background: var(--bg); padding: 10px 0; z-index: 10; }
.az-jump a {
  width: 30px; height: 30px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: 6px; color: var(--navy); font-weight: 700; font-size: 0.85rem;
}
.az-jump a:hover { border-color: var(--teal-1); text-decoration: none; }

.az-group { margin-bottom: 30px; scroll-margin-top: 160px; }
.az-group h3 { border-bottom: 2px solid var(--teal-2); display: inline-block; padding-bottom: 4px; margin-bottom: 14px; }
.az-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 24px; }
@media (max-width: 700px) { .az-list { grid-template-columns: 1fr; } }
.az-list li { border-bottom: 1px dashed var(--border); padding: 10px 0; }
.az-list a { color: var(--ink); font-weight: 600; }
.az-list a:hover { color: var(--teal-1); }
.az-list .cat-tag { color: var(--slate); font-weight: 500; font-size: 0.8rem; text-transform: none; margin-left: 8px; }

/* Detail page */
.detail-head { padding: 40px 0 20px; border-bottom: 1px solid var(--border); }
.detail-meta { display: flex; gap: 10px; align-items: center; margin-bottom: 10px; }
.badge { background: #EAF6F3; color: var(--teal-1); font-weight: 700; font-size: 0.75rem; padding: 4px 10px; border-radius: 999px; text-transform: uppercase; letter-spacing: 0.03em; }
.research-note {
  background: #F4F7F8; border-left: 3px solid var(--slate); padding: 14px 18px; border-radius: 0 8px 8px 0; margin: 20px 0;
}
.research-note strong { color: var(--navy); }

/* Deal cards */
.deal-card {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 20px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 14px;
  background: var(--panel); flex-wrap: wrap;
}
.deal-card .code {
  font-family: 'SF Mono', Consolas, monospace; background: #EAF6F3; color: var(--teal-1);
  padding: 4px 10px; border-radius: 6px; font-weight: 700; font-size: 0.85rem;
}
.deal-card .shop-btn {
  background: var(--navy); color: #fff; padding: 10px 18px; border-radius: 8px; font-weight: 600; white-space: nowrap;
}
.deal-card .shop-btn:hover { background: var(--navy-deep); text-decoration: none; }
.placeholder-note { background: #FFF7ED; border: 1px solid #FCD9A8; color: #92400E; padding: 12px 16px; border-radius: 8px; font-size: 0.9rem; margin-bottom: 20px; }

/* Tool */
.calc-box { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; max-width: 480px; }
.calc-box label { display: block; font-weight: 600; color: var(--navy); margin: 14px 0 6px; font-size: 0.9rem; }
.calc-box input { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; font-family: inherit; }
.calc-result { margin-top: 18px; padding: 16px; background: #EAF6F3; border-radius: 8px; font-weight: 700; color: var(--navy); }

/* Footer */
footer { border-top: 1px solid var(--border); margin-top: 64px; padding: 40px 0 30px; background: var(--panel); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
footer h4 { font-size: 0.85rem; color: var(--navy); margin-bottom: 10px; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer li { margin-bottom: 8px; }
footer a { color: var(--ink-soft); font-size: 0.9rem; }
.disclaimer { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--border); font-size: 0.78rem; color: var(--ink-soft); }

@media (max-width: 780px) {
  nav.main-nav { display: none; }
  .menu-toggle { display: block; }
}

/* Peptide Fundamentals */
.fund-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 860px) { .fund-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .fund-grid { grid-template-columns: 1fr; } }
.fund-card {
  display: block; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; color: inherit;
}
.fund-card:hover { border-color: var(--teal-1); text-decoration: none; }
.fund-card h3 { font-size: 1rem; margin-bottom: 6px; }
.fund-card p { font-size: 0.88rem; margin: 0 0 10px; }
.fund-card .fund-arrow { font-size: 0.82rem; font-weight: 700; color: var(--teal-1); }

/* Newsletter */
.newsletter-box {
  display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap;
  background: var(--navy); color: #fff; border-radius: var(--radius); padding: 28px 30px; margin-bottom: 20px;
}
.newsletter-box h3 { color: #fff; margin-bottom: 6px; }
.newsletter-box p { color: #C9D6DE; margin: 0; max-width: 42ch; }
.newsletter-form { display: flex; gap: 8px; flex-wrap: wrap; }
.newsletter-form input[type="email"] {
  padding: 12px 14px; border-radius: 8px; border: none; font-size: 0.95rem; font-family: inherit; min-width: 220px;
}
.newsletter-form button {
  background: var(--teal-1); color: #fff; border: none; border-radius: 8px; padding: 0 20px;
  font-weight: 600; cursor: pointer; font-size: 0.95rem;
}
.newsletter-form button:hover { background: var(--teal-2); }
.hp-field { position: absolute; left: -9999px; }

/* Selected references */
.ref-list { list-style: none; margin: 0 0 6px; padding: 0; }
.ref-item {
  display: block; padding: 14px 0; border-bottom: 1px dashed var(--border);
}
.ref-journal { display: block; font-size: 0.74rem; font-weight: 700; color: var(--teal-1); text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 4px; }
.ref-title { display: block; font-weight: 600; color: var(--ink); font-size: 0.95rem; }
.ref-title a { color: var(--ink); }
.ref-title a:hover { color: var(--teal-1); }
.ref-authors { display: block; font-size: 0.84rem; color: var(--ink-soft); margin-top: 2px; }
.ref-note { font-size: 0.8rem; color: var(--ink-soft); margin-top: 10px; }

/* Storage guide table */
.storage-table { width: 100%; border-collapse: collapse; margin: 16px 0 8px; font-size: 0.92rem; }
.storage-table th, .storage-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.storage-table th { color: var(--navy); font-family: 'Sora', sans-serif; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.02em; }
.storage-table td { color: var(--ink-soft); }
@media (max-width: 600px) { .storage-table { font-size: 0.82rem; } .storage-table th, .storage-table td { padding: 8px 6px; } }

/* Reconstitution calculator */
.rc-wrap { padding-top: 40px; max-width: 980px; }
.rc-intro { max-width: 64ch; }
.rc-layout { display: grid; grid-template-columns: 1.3fr 1fr; gap: 20px; align-items: start; margin-top: 26px; }
@media (max-width: 900px) { .rc-layout { grid-template-columns: 1fr; } }
.rc-inputs { display: flex; flex-direction: column; gap: 14px; }
.rc-step h3 { font-size: 0.92rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--slate); margin-bottom: 12px; }
.rc-options { display: flex; flex-wrap: wrap; gap: 8px; }
.rc-opt {
  border: 1px solid var(--border); background: var(--panel); color: var(--navy);
  padding: 8px 14px; border-radius: 999px; font-size: 0.88rem; font-weight: 600; cursor: pointer;
  font-family: inherit; display: inline-flex; align-items: center; gap: 6px; line-height: 1;
}
.rc-opt:hover { border-color: var(--teal-1); }
.rc-opt.rc-active { background: var(--teal-1); color: #fff; border-color: var(--teal-1); }
.rc-opt svg { width: 26px; height: 26px; stroke: currentColor; fill: none; stroke-width: 2.4; stroke-linecap: round; }
.rc-opt-sub { font-size: 0.72rem; opacity: 0.85; font-weight: 500; }
.rc-custom-input {
  margin-top: 10px; width: 160px; padding: 8px 12px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 0.95rem; font-family: inherit;
}
.rc-result-panel { position: sticky; top: 160px; }
.rc-result-headline { font-family: 'Sora', 'Inter', sans-serif; font-weight: 700; color: var(--navy); font-size: 1.25rem; margin-bottom: 18px; }
.rc-gauge-track { position: relative; height: 10px; background: var(--bg); border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.rc-gauge-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0%; background: linear-gradient(90deg, var(--teal-2), var(--teal-1)); transition: width 0.2s ease; }
.rc-gauge-marker { position: absolute; top: -4px; width: 2px; height: 18px; background: var(--navy); left: 0%; transition: left 0.2s ease; }
.rc-gauge-labels { display: flex; justify-content: space-between; font-size: 0.78rem; color: var(--ink-soft); margin-top: 6px; }
.rc-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 20px; }
.rc-stat { background: var(--bg); border-radius: 8px; padding: 10px 12px; }
.rc-stat-label { display: block; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--slate); font-weight: 700; }
.rc-stat-value { display: block; font-size: 1.1rem; font-weight: 700; color: var(--navy); margin-top: 2px; }
.rc-warning { margin-top: 16px; padding: 10px 12px; background: #FCEEEA; border: 1px solid #E8B4A6; border-radius: 8px; color: #8A3B22; font-size: 0.86rem; font-weight: 600; }
.rc-reference { margin-top: 26px; }
.rc-table { width: 100%; border-collapse: collapse; margin-top: 10px; }
.rc-table th, .rc-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.rc-table th { color: var(--slate); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.03em; }
.rc-disclaimer { font-size: 0.84rem; color: var(--ink-soft); margin-top: 24px; max-width: 74ch; }

/* Protocol cheat sheet */
.cheat-disclaimer {
  margin: 20px 0 8px; padding: 14px 18px; background: #FDF6E8; border: 1px solid #E9D8A6;
  border-radius: var(--radius); color: #6B5417; font-size: 0.9rem; max-width: 82ch;
}
.cheat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 22px; }
@media (max-width: 980px) { .cheat-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 720px) { .cheat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .cheat-grid { grid-template-columns: 1fr; } }
.cheat-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
}
.cheat-thumb-btn {
  border: none; padding: 0; margin: 0; background: var(--bg); cursor: pointer; position: relative;
  display: block; width: 100%; aspect-ratio: 707/1000; overflow: hidden;
}
.cheat-thumb-btn img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }
.cheat-zoom {
  position: absolute; left: 0; right: 0; bottom: 0; background: rgba(22,55,79,0.88); color: #fff;
  font-size: 0.78rem; font-weight: 700; padding: 8px 10px; text-align: center;
  transform: translateY(100%); transition: transform 0.15s ease;
}
.cheat-thumb-btn:hover .cheat-zoom, .cheat-thumb-btn:focus-visible .cheat-zoom { transform: translateY(0); }
.cheat-card-body { padding: 14px 16px 16px; }
.cheat-card-body h3 { font-size: 1rem; margin-bottom: 8px; }
.cheat-related { font-size: 0.82rem; margin: 10px 0 0; }

.lightbox-overlay {
  display: none; position: fixed; inset: 0; background: rgba(14,39,57,0.86); z-index: 100;
  align-items: center; justify-content: center; padding: 30px 16px;
}
.lightbox-overlay.open { display: flex; }
.lightbox-inner { max-width: 620px; width: 100%; max-height: 90vh; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.lightbox-inner img { max-width: 100%; max-height: 78vh; border-radius: 8px; box-shadow: 0 20px 60px rgba(0,0,0,0.4); }
.lightbox-caption { color: #fff; font-weight: 600; font-size: 0.92rem; margin: 0; }
.lightbox-close {
  position: absolute; top: 18px; right: 24px; background: rgba(255,255,255,0.12); color: #fff; border: none;
  width: 40px; height: 40px; border-radius: 50%; font-size: 1.6rem; line-height: 1; cursor: pointer;
}
.lightbox-close:hover { background: rgba(255,255,255,0.24); }

/* Coupon code copy widget + quick vendor links */
.coupon-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 8px; }
.coupon-code {
  display: inline-flex; align-items: center; gap: 8px; font-family: 'SF Mono', Consolas, monospace;
  background: #EAF6F3; color: var(--teal-1); border: 1px dashed var(--teal-1); cursor: pointer;
  padding: 6px 10px; border-radius: 6px; font-weight: 700; font-size: 0.85rem; font-family-inherit: inherit;
}
.coupon-code:hover { background: #DCF1EC; }
.coupon-code .copy-icon { width: 14px; height: 14px; flex-shrink: 0; }
.coupon-code.copied { background: var(--teal-1); color: #fff; border-style: solid; border-color: var(--teal-1); }
.quick-link {
  font-size: 0.85rem; font-weight: 600; color: var(--navy); white-space: nowrap;
}
.quick-link:hover { color: var(--teal-1); }
.coupon-strip {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 20px 0;
  padding: 12px 16px; background: #EAF6F3; border: 1px solid #C9E9E1; border-radius: var(--radius);
  font-size: 0.9rem;
}
.coupon-strip-label { color: var(--navy); font-weight: 600; }

/* Sitewide top/bottom coupon bars (every page) */
.sitewide-coupon-top { padding-top: 14px; padding-bottom: 0; }
.sitewide-coupon-bottom { padding-top: 8px; padding-bottom: 8px; }
.sitewide-coupon-top .coupon-strip, .sitewide-coupon-bottom .coupon-strip { margin: 6px 0; }