/* style.css — components & sections */

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-10));
}

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

/* Eyebrow / "nutrition label" small caps mono */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px; height: 1px;
  background: currentColor;
  opacity: 0.6;
}

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease, background 200ms ease;
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-divider);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}
.brand__mark { width: 36px; height: 36px; flex: none; }
.brand__name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  line-height: 1;
}
.brand__name em {
  font-style: italic;
  color: var(--color-primary);
  font-weight: 400;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.nav__list {
  display: none;
  gap: var(--space-6);
  list-style: none;
}
@media (min-width: 720px) { .nav__list { display: flex; } }
.nav__list a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  position: relative;
}
.nav__list a:hover { color: var(--color-text); }
.nav__list a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1);
}
.nav__list a:hover::after { transform: scaleX(1); }

.theme-toggle {
  width: 38px; height: 38px;
  display: inline-grid;
  place-items: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface);
  border-color: var(--color-text-muted);
}

/* HERO */
.hero {
  position: relative;
  padding-block: clamp(var(--space-16), 12vw, var(--space-32)) clamp(var(--space-12), 8vw, var(--space-24));
  overflow: hidden;
  isolation: isolate;
}
.hero__canvas {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  opacity: 0.95;
}
.hero__inner { position: relative; }

.hero__label {
  margin-bottom: var(--space-8);
}

.hero__title {
  font-size: var(--text-hero);
  font-weight: 300;
  letter-spacing: -0.035em;
  line-height: 0.95;
  max-width: 16ch;
}
.hero__title em {
  font-style: italic;
  color: var(--color-primary);
}
.hero__title .word {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.4em);
  animation: word-rise 900ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero__title .word:nth-child(1) { animation-delay: 100ms; }
.hero__title .word:nth-child(2) { animation-delay: 220ms; }
.hero__title .word:nth-child(3) { animation-delay: 340ms; }
.hero__title .word:nth-child(4) { animation-delay: 460ms; }
.hero__title .word:nth-child(5) { animation-delay: 580ms; }
.hero__title .word:nth-child(6) { animation-delay: 700ms; }
.hero__title .word:nth-child(7) { animation-delay: 820ms; }
@keyframes word-rise {
  to { opacity: 1; transform: translateY(0); }
}

.hero__lede {
  margin-top: var(--space-8);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 50ch;
  line-height: 1.5;
  opacity: 0;
  animation: fade-up 700ms 900ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero__actions {
  margin-top: var(--space-10);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  opacity: 0;
  animation: fade-up 700ms 1100ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-text);
  color: var(--color-text-inverse);
}
.btn--primary:hover {
  background: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--ghost {
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn--ghost:hover {
  border-color: var(--color-text);
  background: var(--color-surface);
}
.btn svg { width: 16px; height: 16px; }

/* SECTION pattern */
.section {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  position: relative;
}
.section--surface {
  background: var(--color-surface);
  border-block: 1px solid var(--color-divider);
}
.section__head {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
  max-width: 60ch;
}
.section__title {
  font-size: var(--text-2xl);
  font-weight: 300;
  letter-spacing: -0.025em;
}
.section__title em { font-style: italic; color: var(--color-primary); }

/* CONCEPT — nutrition-label-like layout */
.concept {
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
}
@media (min-width: 880px) {
  .concept { grid-template-columns: 1.2fr 1fr; align-items: start; gap: var(--space-20); }
}

.concept__prose p + p { margin-top: var(--space-5); }
.concept__prose p {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.65;
}
.concept__prose .lede {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: var(--space-6);
}

/* Nutrition facts panel */
.facts {
  border: 2px solid var(--color-text);
  background: var(--color-surface-2);
  padding: var(--space-6) var(--space-6) var(--space-5);
  font-family: var(--font-mono);
  position: sticky;
  top: calc(var(--space-16) + var(--space-4));
}
.facts__title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  border-bottom: 8px solid var(--color-text);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-3);
  line-height: 1;
}
.facts__sub {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.facts__rule { height: 1px; background: var(--color-text); margin-block: var(--space-2); }
.facts__rule--thick { height: 4px; }
.facts__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.78rem;
  padding-block: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
  letter-spacing: 0.01em;
}
.facts__row:last-of-type { border-bottom: 0; }
.facts__row strong { font-weight: 600; }
.facts__row .pct {
  color: var(--color-text);
  font-weight: 600;
}
.facts__row.bad .pct { color: var(--color-accent); }
.facts__row.good .pct { color: var(--color-primary); }
.facts__note {
  font-size: 0.68rem;
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  line-height: 1.4;
  font-family: var(--font-mono);
}

/* PRINCIPLES grid */
.principles {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
  margin-top: var(--space-10);
}
@media (min-width: 640px) {
  .principles { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 980px) {
  .principles { grid-template-columns: repeat(3, 1fr); }
}
.principle {
  padding: var(--space-6);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 240ms ease, border-color 240ms ease;
}
.principle:hover {
  transform: translateY(-2px);
  border-color: var(--color-text-muted);
  box-shadow: var(--shadow-md);
}
.principle__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.12em;
}
.principle__title {
  font-size: var(--text-lg);
  margin-block: var(--space-3);
  font-family: var(--font-display);
  font-weight: 400;
  font-style: italic;
}
.principle__body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* FEEDS — channel cards */
.channels {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .channels { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1080px) {
  .channels { grid-template-columns: repeat(4, 1fr); }
}

.channel {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  overflow: hidden;
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1), border-color 240ms ease, box-shadow 240ms ease;
}
.channel:hover {
  transform: translateY(-3px);
  border-color: var(--color-text);
  box-shadow: var(--shadow-lg);
}
.channel__media {
  aspect-ratio: 16 / 9;
  background: var(--color-surface-offset);
  position: relative;
  overflow: hidden;
}
.channel__media iframe {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  border: 0;
}
.channel__placeholder {
  position: absolute; inset: 0;
  display: grid;
  place-items: center;
  color: var(--color-text-muted);
  background:
    radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--color-primary) 22%, transparent), transparent 50%),
    radial-gradient(circle at 70% 70%, color-mix(in srgb, var(--color-accent) 18%, transparent), transparent 50%),
    var(--color-surface-offset);
}
.channel__placeholder-inner {
  display: grid;
  place-items: center;
  gap: var(--space-2);
  text-align: center;
  padding: var(--space-6);
}
.channel__placeholder svg { width: 56px; height: 56px; opacity: 0.7; }
.channel__placeholder small {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.channel__body {
  padding: var(--space-5) var(--space-6) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}
.channel__platform {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.channel__platform .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); }
.channel__handle {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.channel__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}
.channel__cta {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  align-self: flex-start;
}
.channel__cta:hover { color: var(--color-primary-hover); transform: translateX(2px); }
.channel__cta svg { width: 12px; height: 12px; transition: transform 200ms; }
.channel__cta:hover svg { transform: translateX(3px); }

/* SUBSTACK CTA */
.subscribe {
  background:
    radial-gradient(ellipse at 0% 100%, color-mix(in srgb, var(--color-primary) 18%, transparent), transparent 60%),
    radial-gradient(ellipse at 100% 0%, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 60%),
    var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-10), 6vw, var(--space-20));
  display: grid;
  gap: var(--space-8);
}
@media (min-width: 880px) {
  .subscribe { grid-template-columns: 1.1fr 1fr; align-items: center; gap: var(--space-16); }
}
.subscribe__title {
  font-size: var(--text-xl);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: var(--space-3);
}
.subscribe__title em { font-style: italic; color: var(--color-primary); }
.subscribe__sub {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 44ch;
}
.subscribe__form {
  display: grid;
  gap: var(--space-3);
}
.subscribe__row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  align-items: stretch;
  transition: border-color 200ms;
}
@media (min-width: 480px) {
  .subscribe__row {
    border-radius: var(--radius-full);
    flex-wrap: nowrap;
    align-items: center;
    padding: var(--space-1);
  }
}
.subscribe__row:focus-within {
  border-color: var(--color-text);
}
.subscribe__input {
  flex: 1 1 100%;
  padding: var(--space-3) var(--space-4);
  border: 0;
  background: transparent;
  outline: none;
  font-size: var(--text-sm);
  min-width: 0;
}
@media (min-width: 480px) {
  .subscribe__input { flex: 1 1 0; padding: var(--space-3) var(--space-5); }
}
.subscribe__input::placeholder { color: var(--color-text-faint); }
.subscribe__submit {
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full);
  background: var(--color-text);
  color: var(--color-text-inverse);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  flex: 1 1 100%;
}
@media (min-width: 480px) {
  .subscribe__submit { flex: 0 0 auto; }
}
.subscribe__submit:hover {
  background: var(--color-primary);
  transform: translateX(2px);
}
.subscribe__legal {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.subscribe__success {
  display: none;
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-primary);
  padding: var(--space-4) 0;
}
.subscribe__form.is-success .subscribe__row { display: none; }
.subscribe__form.is-success .subscribe__success { display: block; }

/* FOOTER */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12);
  background: var(--color-bg);
}
.site-footer__inner {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 720px) {
  .site-footer__inner { grid-template-columns: 1fr auto; }
}
.site-footer__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.site-footer__socials {
  display: flex;
  gap: var(--space-2);
}
.site-footer__socials a {
  width: 36px; height: 36px;
  display: inline-grid;
  place-items: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-divider);
  color: var(--color-text-muted);
}
.site-footer__socials a:hover {
  color: var(--color-text);
  background: var(--color-surface);
  border-color: var(--color-text);
}
.site-footer__socials svg { width: 16px; height: 16px; }

/* SECTION DIVIDER (pull-quote style) */
.divider-quote {
  text-align: center;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: var(--text-xl);
  color: var(--color-text);
  line-height: 1.3;
  max-width: 28ch;
  margin-inline: auto;
  letter-spacing: -0.015em;
}
.divider-quote::before, .divider-quote::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--color-text-muted);
  margin: var(--space-6) auto;
}