/* ============================================================
   GREENHOUSE VISIONS — Components & Layout
   ============================================================ */

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--default {
  max-width: var(--content-default);
}
.container--narrow {
  max-width: var(--content-narrow);
}
.section {
  padding-block: clamp(var(--space-12), 7vw, var(--space-24));
}
.section--tight {
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
}
.section--offset {
  background: var(--color-surface);
}
.section--forest {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.section--forest .eyebrow {
  color: var(--color-gold);
}
.section--forest .muted {
  color: color-mix(in oklab, var(--color-text-inverse) 78%, transparent);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1.5px;
  background: currentColor;
  display: inline-block;
}
.eyebrow--plain::before {
  display: none;
}

.lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
}
.muted {
  color: var(--color-text-muted);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
  max-width: 64ch;
}
.section-head--centered {
  margin-inline: auto;
  text-align: center;
  align-items: center;
}
.section-title {
  font-size: var(--text-2xl);
}
.section-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--color-primary);
  --btn-fg: var(--color-text-inverse);
  --btn-border: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-full);
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1.5px solid var(--btn-border);
  text-decoration: none;
  white-space: nowrap;
  min-height: 48px;
  box-shadow: var(--shadow-sm);
}
.btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn:active {
  transform: translateY(0);
}
.btn .arrow {
  transition: transform var(--transition-interactive);
}
.btn:hover .arrow {
  transform: translateX(3px);
}
.btn--gold {
  --btn-bg: var(--color-gold);
  --btn-fg: #1a1407;
}
.btn--gold:hover {
  background: var(--color-gold-hover);
}
.btn--outline {
  --btn-bg: transparent;
  --btn-fg: var(--color-text);
  --btn-border: var(--color-border);
  box-shadow: none;
}
.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-highlight);
}
.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--color-text);
  box-shadow: none;
  padding-inline: var(--space-4);
}
.btn--ghost:hover {
  background: var(--color-surface-offset);
  transform: none;
}
.btn--light {
  --btn-bg: var(--color-surface);
  --btn-fg: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.btn--light:hover {
  background: #fff;
}
.btn--lg {
  padding: var(--space-5) var(--space-8);
  font-size: var(--text-base);
  min-height: 56px;
}
.btn--block {
  width: 100%;
}
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    background var(--transition-interactive);
}
.header--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 68px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
}
.brand__mark {
  width: 34px;
  height: 34px;
  flex: none;
  color: var(--color-primary);
}
.brand__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
  line-height: 1;
  white-space: nowrap;
}
.brand__sub {
  color: var(--color-gold);
  font-weight: 500;
}
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
}
.nav a:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid transparent;
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text);
}
.nav-toggle:hover {
  background: var(--color-surface-offset);
}

@media (max-width: 940px) {
  .nav,
  .header__actions .btn--ghost {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
}
@media (max-width: 600px) {
  .theme-toggle {
    display: none;
  }
  .brand__name {
    font-size: var(--text-base);
  }
}

/* Mobile nav drawer */
.mobile-nav {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(86vw, 360px);
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  z-index: 90;
  transform: translateX(100%);
  transition: transform var(--transition-lift);
  display: flex;
  flex-direction: column;
  padding: var(--space-8) var(--space-6) var(--space-6);
  gap: var(--space-2);
  overflow-y: auto;
}
.mobile-nav.open {
  transform: translateX(0);
  box-shadow: var(--shadow-lg);
}
.mobile-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-size: var(--text-lg);
  font-weight: 500;
  padding: var(--space-3) var(--space-2);
  border-radius: var(--radius-sm);
}
.mobile-nav a:hover {
  background: var(--color-surface-offset);
}
.mobile-nav .mobile-nav__cta {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.scrim {
  position: fixed;
  inset: 0;
  background: rgba(8, 16, 11, 0.5);
  z-index: 85;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-interactive), visibility var(--transition-interactive);
}
.scrim.open {
  opacity: 1;
  visibility: visible;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding-block: var(--space-16) var(--space-10);
}
.footer a {
  color: color-mix(in oklab, var(--color-text-inverse) 80%, transparent);
  text-decoration: none;
  font-size: var(--text-sm);
}
.footer a:hover {
  color: var(--color-gold);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-10);
}
.footer__brand .brand__mark {
  color: var(--color-gold);
}
.footer__tag {
  margin-top: var(--space-4);
  color: color-mix(in oklab, var(--color-text-inverse) 72%, transparent);
  font-size: var(--text-sm);
  max-width: 34ch;
}
.footer__col h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
}
.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid color-mix(in oklab, var(--color-text-inverse) 16%, transparent);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: color-mix(in oklab, var(--color-text-inverse) 60%, transparent);
}
@media (max-width: 860px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}
@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}
.card--pad-lg {
  padding: var(--space-10);
}
.card--hover {
  transition:
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive),
    border-color var(--transition-interactive);
}
.card--hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: color-mix(in oklab, var(--color-primary) 30%, var(--color-border));
}

/* ---------- Grid helpers ---------- */
.grid {
  display: grid;
  gap: var(--space-6);
}
.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}
@media (max-width: 980px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

/* ---------- Pill / badge ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  letter-spacing: 0.02em;
}
.pill--gold {
  background: var(--color-gold-highlight);
  color: var(--color-gold-active);
}
.pill--forest {
  background: color-mix(in oklab, var(--color-gold) 18%, transparent);
  color: var(--color-gold);
}

/* ---------- Divider ---------- */
.divider {
  height: 1px;
  background: var(--color-divider);
  border: 0;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.hero__title {
  font-size: var(--text-3xl);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 0.98;
  margin-block: var(--space-6);
}
.hero__title em {
  font-style: italic;
  font-weight: 500;
  color: var(--color-gold);
}
.hero__sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
}

/* ---------- Value / feature list ---------- */
.checklist {
  display: grid;
  gap: var(--space-3);
}
.checklist li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  max-width: none;
  color: var(--color-text-muted);
}
.checklist svg {
  flex: none;
  margin-top: 3px;
  color: var(--color-primary);
}
.section--forest .checklist svg {
  color: var(--color-gold);
}
.section--forest .checklist li {
  color: color-mix(in oklab, var(--color-text-inverse) 82%, transparent);
}

/* ---------- Stat strip ---------- */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.stat-strip .stat {
  text-align: left;
}
.stat__num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1;
}
.section--forest .stat__num {
  color: var(--color-gold);
}
.stat__label {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
@media (max-width: 760px) {
  .stat-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- Reveal animation ----------
   Progressive enhancement: content is visible by default; only hidden
   when JS adds .reveal-on to <html>, then faded in on scroll. */
.reveal {
  opacity: 1;
  transform: none;
}
html.reveal-on .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}
html.reveal-on .reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- Step process ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: var(--space-2);
}
.step__num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-gold);
  letter-spacing: 0.1em;
}
.step__title {
  font-size: var(--text-lg);
  margin-block: var(--space-2) var(--space-2);
}
.step__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.step::after {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(100% + var(--space-3));
  width: calc(100% - var(--space-6));
  height: 1px;
  background: linear-gradient(to right, var(--color-border), transparent);
}
.step:last-child::after {
  display: none;
}
@media (max-width: 900px) {
  .steps {
    grid-template-columns: 1fr 1fr;
  }
  .step::after {
    display: none;
  }
}
@media (max-width: 520px) {
  .steps {
    grid-template-columns: 1fr;
  }
}