/* ============================================
   Biomaxx Design System
   Colors derived from brand hero image
   ============================================ */

:root {
  --color-bg: #171514;
  --color-bg-elevated: #211e1c;
  --color-bg-card: #2a2624;
  --color-text: #f3f0eb;
  --color-text-muted: rgba(243, 240, 235, 0.72);
  --color-text-subtle: rgba(243, 240, 235, 0.52);
  --color-accent: #52a394;
  --color-accent-hover: #65b5a6;
  --color-accent-dark: #428a7d;
  --color-border: rgba(82, 163, 148, 0.18);

  --font-serif: "Playfair Display", "Georgia", serif;
  --font-sans: "Montserrat", "Helvetica Neue", Arial, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --header-height: 5rem;
  --max-width: 72rem;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  background-image: radial-gradient(ellipse at 50% -10%, rgba(82, 163, 148, 0.06) 0%, transparent 55%);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

/* ---- Typography ---- */

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.15;
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-md);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 36rem;
}

/* ---- Layout ---- */

.container {
  width: min(100% - 2.5rem, var(--max-width));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-2xl);
}

.section--dark {
  background: var(--color-bg);
}

.section--elevated {
  background: linear-gradient(180deg, var(--color-bg-elevated) 0%, rgba(33, 30, 28, 0.97) 100%);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition);
}

.site-header.scrolled {
  background: rgba(23, 21, 20, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 2.5rem, var(--max-width));
  margin-inline: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.site-search {
  position: relative;
}

.site-search__field {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  min-width: 11rem;
  padding: 0.45rem 0.75rem;
  background: rgba(82, 163, 148, 0.08);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition), background var(--transition);
}

.site-search__field:focus-within {
  border-color: var(--color-accent);
  background: rgba(82, 163, 148, 0.12);
}

.site-search__icon {
  flex-shrink: 0;
  color: var(--color-text-subtle);
}

.site-search__input {
  width: 100%;
  border: none;
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  outline: none;
}

.site-search__input::placeholder {
  color: var(--color-text-subtle);
}

.site-search__input::-webkit-search-cancel-button {
  -webkit-appearance: none;
}

.site-search__results {
  list-style: none;
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  width: min(18rem, 80vw);
  max-height: 18rem;
  overflow-y: auto;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
  z-index: 120;
}

.site-search__result {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.7rem 0.9rem;
  transition: background var(--transition), color var(--transition);
}

.site-search__result:hover,
.site-search__results [role="option"].is-active .site-search__result {
  background: rgba(82, 163, 148, 0.1);
}

.site-search__result-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
}

.site-search__result-meta {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

.site-search__empty {
  padding: 0.85rem 0.9rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

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

.site-nav a {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.site-nav > a:hover {
  color: var(--color-accent);
}

/* ---- Nav dropdown ---- */

.nav-dropdown {
  position: relative;
}

.nav-dropdown__trigger {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0;
  transition: color var(--transition);
}

.nav-dropdown__trigger:hover,
.nav-dropdown.open .nav-dropdown__trigger {
  color: var(--color-accent);
}

.nav-dropdown__chevron {
  transition: transform var(--transition);
}

.nav-dropdown.open .nav-dropdown__chevron {
  transform: rotate(180deg);
}

.nav-dropdown__menu {
  list-style: none;
  position: absolute;
  top: calc(100% + 0.75rem);
  left: 50%;
  transform: translateX(-50%);
  min-width: 9rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.nav-dropdown:hover .nav-dropdown__menu,
.nav-dropdown.open .nav-dropdown__menu {
  opacity: 1;
  visibility: visible;
}

.nav-dropdown__menu a {
  display: block;
  padding: 0.6rem 1.25rem;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav-dropdown__menu a:hover,
.nav-dropdown__menu a[aria-current="page"] {
  color: var(--color-accent);
  background: rgba(82, 163, 148, 0.08);
}

.nav-dropdown__menu--wide {
  min-width: 14rem;
}

.nav-dropdown__menu--wide a {
  white-space: normal;
  line-height: 1.4;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

/* ---- Stack cards ---- */

.stack-card__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 100%;
  padding: var(--space-md);
  background: linear-gradient(145deg, var(--color-bg-elevated) 0%, var(--color-bg) 100%);
  text-align: center;
}

.peptide-detail__image .stack-card__visual {
  min-height: 12rem;
}

.stack-card__visual-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.stack-card__visual-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.stack-card__visual-peptides {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  line-height: 1.5;
  max-width: 90%;
}

.stack-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.stack-tag {
  display: inline-block;
  padding: 0.4rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-text);
  background: rgba(82, 163, 148, 0.12);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition), background var(--transition);
}

.stack-tag:hover {
  border-color: var(--color-accent);
  background: rgba(82, 163, 148, 0.2);
  color: var(--color-accent);
}

/* ---- Media cards (podcasts, articles) ---- */

.media-card__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 100%;
  padding: var(--space-md);
  background: linear-gradient(145deg, var(--color-bg-elevated) 0%, var(--color-bg) 100%);
  text-align: center;
}

.peptide-detail__image .media-card__visual {
  min-height: 12rem;
}

.media-card__visual-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.media-card__visual-meta {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
  line-height: 1.4;
  max-width: 90%;
}

.media-card__icon {
  opacity: 0.85;
}

.episode-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

.episode-rating {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-xs);
}

.page-hero__inner .episode-rating {
  margin-top: 0.75rem;
}

.episode-rating__stars {
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.episode-rating__score {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.episode-rating__note {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: 0.5rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 1.5rem;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: var(--transition);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo__icon {
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
}

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo__name {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.logo__tag {
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  background: var(--color-accent);
  color: var(--color-text);
  padding: 0.15rem 0.4rem;
  width: fit-content;
  margin-top: 0.15rem;
}

/* ---- Hero ---- */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: stretch;
  overflow: hidden;
  background: var(--color-bg);
}

.hero__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(23, 21, 20, 0.58) 0%,
    rgba(23, 21, 20, 0.24) 45%,
    rgba(23, 21, 20, 0.05) 70%,
    transparent 100%
  );
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--header-height);
  padding-bottom: var(--space-xl);
  width: min(100% - 2.5rem, var(--max-width));
  margin-inline: auto;
  max-width: 36rem;
}

.hero__title {
  font-size: clamp(2.75rem, 6vw, 4.5rem);
  margin-bottom: var(--space-md);
  letter-spacing: -0.01em;
}

.hero__divider {
  width: 4rem;
  height: 2px;
  background: var(--color-accent);
  border: none;
  margin-bottom: var(--space-md);
}

.hero__headline {
  font-family: var(--font-sans);
  font-size: clamp(0.85rem, 1.5vw, 1rem);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.hero__tagline {
  font-family: var(--font-sans);
  font-size: clamp(0.75rem, 1.2vw, 0.875rem);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-text);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid rgba(243, 240, 235, 0.24);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ---- About / Intro ---- */

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.intro-grid__visual {
  aspect-ratio: 4 / 5;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.intro-grid__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

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

.peptide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.peptide-card {
  display: block;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.peptide-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.peptide-card__image {
  aspect-ratio: 16 / 10;
  background: var(--color-bg-elevated);
  overflow: hidden;
}

.peptide-card__image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  padding: 0.15rem;
}

.peptide-card__image--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-subtle);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.peptide-card__body {
  padding: var(--space-md);
}

.peptide-card__title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  margin-bottom: 0.15rem;
}

.quality-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.quality-badge {
  display: inline-block;
  padding: 0.25rem 0.55rem;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(82, 163, 148, 0.1);
  border: 1px solid rgba(82, 163, 148, 0.28);
}

.page-hero__inner .quality-badges {
  margin-top: var(--space-sm);
}

.peptide-card__body .quality-badges {
  margin-bottom: 0.65rem;
}

.peptide-card__size {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.peptide-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ---- Content placeholder ---- */

.content-placeholder {
  border: 1px dashed var(--color-border);
  border-radius: 2px;
  padding: var(--space-xl);
  text-align: center;
  margin-top: var(--space-lg);
}

.content-placeholder p {
  color: var(--color-text-muted);
  max-width: 32rem;
  margin-inline: auto;
}

.content-placeholder code {
  font-size: 0.85rem;
  color: var(--color-accent);
  background: rgba(82, 163, 148, 0.1);
  padding: 0.15rem 0.4rem;
}

/* ---- Inner pages ---- */

.page-hero {
  padding-top: calc(var(--header-height) + var(--space-xl));
  padding-bottom: var(--space-xl);
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
}

.page-hero__inner {
  max-width: 40rem;
}

.page-hero__title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  margin-bottom: var(--space-sm);
}

.page-hero__lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---- Prose / article content ---- */

.prose {
  max-width: 42rem;
}

.prose__block {
  margin-bottom: var(--space-xl);
}

.prose__block h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.prose__block h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-xs);
}

.prose p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  line-height: 1.75;
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose strong {
  color: var(--color-text);
  font-weight: 600;
}

.prose em {
  font-style: italic;
}

.prose__list {
  list-style: none;
  margin: var(--space-sm) 0 var(--space-md);
  padding: 0;
}

.prose__list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.6rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.prose__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.prose__callout {
  margin: var(--space-md) 0;
  padding: var(--space-md);
  background: rgba(82, 163, 148, 0.08);
  border-left: 3px solid var(--color-accent);
}

.prose__callout-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.prose__callout p {
  margin-bottom: 0;
}

.prose__callout p + p {
  margin-top: 0.65rem;
}

.dose-range {
  color: var(--color-text-muted);
  font-size: 0.92em;
}

/* ---- Mixing steps ---- */

.mix-steps {
  margin-bottom: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.mix-steps__list {
  list-style: none;
  margin: var(--space-sm) 0 0;
  padding: 0;
  counter-reset: mix-step;
}

.mix-steps__list li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.mix-steps__list li::before {
  counter-increment: mix-step;
  content: counter(mix-step);
  position: absolute;
  left: 0;
  top: 0.1em;
  width: 1.35rem;
  height: 1.35rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-accent);
  border: 1px solid var(--color-border);
  border-radius: 50%;
}

.mix-steps__note {
  font-size: 0.85rem;
  color: var(--color-text-subtle);
  margin: var(--space-sm) 0 0;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

/* ---- Mixing calculator ---- */

.mix-calc {
  margin-top: var(--space-md);
}

.mix-calc__form {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.mix-calc__field label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}

.mix-calc__input {
  width: 100%;
  padding: 0.65rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 0;
  transition: border-color var(--transition);
}

.mix-calc__input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.mix-calc__results {
  padding: var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.mix-calc__results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.mix-calc__result-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

.mix-calc__result-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-accent);
}

.mix-calc__hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: var(--space-sm) 0 0;
}

/* ---- Dosing protocol table ---- */

.dose-table-wrap {
  overflow-x: auto;
  margin: var(--space-md) 0;
}

.dose-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.dose-table th,
.dose-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.dose-table th {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: var(--color-bg-card);
}

.dose-table td a {
  color: var(--color-accent);
  font-weight: 500;
}

.dose-table tbody tr:hover {
  background: rgba(82, 163, 148, 0.04);
}

.stack-dose-calcs {
  margin-top: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.stack-dose-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-accent);
}

.prose__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.prose__card {
  padding: var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.prose__card p {
  font-size: 0.95rem;
}

.prose__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.prose__disclaimer {
  margin-top: var(--space-xl);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
}

.prose__disclaimer p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* ---- Peptide detail page ---- */

.back-link {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  transition: color var(--transition);
}

.back-link:hover {
  color: var(--color-accent);
}

.peptide-detail {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-xl);
  align-items: start;
}

.peptide-detail__image {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  position: sticky;
  top: calc(var(--header-height) + var(--space-md));
}

.peptide-detail__image img {
  width: 100%;
  height: auto;
  display: block;
  background: var(--color-bg-elevated);
}

.peptide-detail__type {
  font-size: 1.05rem;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.peptide-detail__content {
  max-width: none;
}

/* ---- Footer ---- */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-lg);
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.site-footer__copy {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

.site-footer__links {
  display: flex;
  gap: var(--space-md);
}

.site-footer__links a {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

/* ---- Responsive ---- */

@media (max-width: 900px) {
  .intro-grid,
  .prose__grid,
  .peptide-detail,
  .mix-calc__form,
  .mix-calc__results-grid {
    grid-template-columns: 1fr;
  }

  .peptide-detail__image {
    position: static;
  }

  .hero__overlay {
    background: linear-gradient(
      180deg,
      rgba(23, 21, 20, 0.5) 0%,
      rgba(23, 21, 20, 0.32) 50%,
      rgba(23, 21, 20, 0.58) 100%
    );
  }

  .hero__content {
    max-width: none;
    justify-content: flex-end;
    padding-bottom: var(--space-2xl);
  }

  .hero__image {
    object-position: 65% top;
  }
}

@media (max-width: 640px) {
  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(23, 21, 20, 0.97);
    padding: var(--space-md);
    gap: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform var(--transition), opacity var(--transition);
    pointer-events: none;
  }

  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle {
    display: block;
  }

  .nav-dropdown__menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: transparent;
    border: none;
    padding: 0.25rem 0 0 1rem;
    display: none;
  }

  .nav-dropdown.open .nav-dropdown__menu {
    display: block;
  }

  .nav-dropdown__trigger {
    width: 100%;
    justify-content: space-between;
  }

  .site-search {
    width: 100%;
  }

  .site-search__field {
    min-width: 0;
    width: 100%;
  }

  .site-search__results {
    left: 0;
    right: 0;
    width: auto;
  }
}