/* style.css — GreenRoots layout & components */

.container {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-4);
}
.container--narrow { max-width: var(--content-narrow); }
.container--wide { max-width: var(--content-wide); }

/* ── Header / Nav ─────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid color-mix(in oklab, var(--color-text) 8%, transparent);
  transition: transform 0.3s cubic-bezier(0.16,1,0.3,1), box-shadow 0.3s cubic-bezier(0.16,1,0.3,1);
}
.header--hidden { transform: translateY(-100%); }
.header--scrolled { box-shadow: var(--shadow-sm); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.nav__brand svg { flex-shrink: 0; }
.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-6);
}
.nav__links a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}
.nav__links a:hover { color: var(--color-text); }
.nav__actions { display: flex; align-items: center; gap: var(--space-3); }
#navCta { display: none; }

.nav__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text);
}
.nav__toggle svg { width: 24px; height: 24px; }

@media (min-width: 860px) {
  .nav__links { display: flex; }
  .nav__toggle { display: none; }
  #navCta { display: inline-flex; }
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 60;
  background: var(--color-bg);
  flex-direction: column;
  padding: var(--space-8) var(--space-4);
  gap: var(--space-2);
}
.mobile-menu--open { display: flex; }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  text-decoration: none;
  color: var(--color-text);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}
.mobile-menu__close {
  align-self: flex-end;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text);
}

/* ── Buttons ─────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  border: 1.5px solid transparent;
  transition: all var(--transition-interactive);
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}
.btn--primary:active { background: var(--color-primary-active); }
.btn--ghost {
  color: var(--color-text);
  border-color: color-mix(in oklab, var(--color-text) 15%, transparent);
}
.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

/* Theme toggle */
.theme-toggle {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid color-mix(in oklab, var(--color-text) 12%, transparent);
}
.theme-toggle:hover { color: var(--color-text); }

/* ── Hero ────────────────────────────────── */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg,
    color-mix(in oklab, var(--color-bg) 88%, transparent) 0%,
    color-mix(in oklab, var(--color-bg) 72%, transparent) 30%,
    color-mix(in oklab, var(--color-bg) 35%, transparent) 60%,
    color-mix(in oklab, var(--color-bg) 8%, transparent) 100%);
}
.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--content-wide);
  margin-inline: auto;
  width: 100%;
  padding: var(--space-4);
  padding-bottom: clamp(var(--space-12), 8vw, var(--space-24));
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
  background: color-mix(in oklab, var(--color-bg) 85%, transparent);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
}
.hero__eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px; height: 2px;
  background: var(--color-primary);
}
.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.02em;
  max-width: 16ch;
  margin-bottom: var(--space-6);
  text-shadow: 0 2px 24px color-mix(in oklab, var(--color-bg) 60%, transparent);
}
.hero__title em {
  font-style: italic;
  color: var(--color-primary);
}
.hero__lede {
  font-size: var(--text-lg);
  color: var(--color-text);
  max-width: 52ch;
  margin-bottom: var(--space-8);
  background: color-mix(in oklab, var(--color-bg) 72%, transparent);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.hero__actions .btn--ghost {
  border-color: color-mix(in oklab, var(--color-text) 35%, transparent);
  background: color-mix(in oklab, var(--color-bg) 50%, transparent);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.hero__actions .btn--ghost:hover {
  border-color: var(--color-primary);
  background: color-mix(in oklab, var(--color-bg) 70%, transparent);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ── Section base ────────────────────────── */
.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}
.section--tight { padding-block: clamp(var(--space-10), 5vw, var(--space-20)); }
.section--offset {
  background: var(--color-surface-offset);
}
.section--dark {
  background: var(--color-primary-active);
  color: var(--color-text-inverse);
}
.section--dark .section__eyebrow { color: var(--color-primary-highlight); }
.section--dark .section__eyebrow::before { background: var(--color-primary-highlight); }
.section--dark .section__title { color: var(--color-text-inverse); }
.section--dark p { color: color-mix(in oklab, var(--color-text-inverse) 80%, transparent); }

.section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}
.section__eyebrow::before {
  content: '';
  display: inline-block;
  width: 32px; height: 2px;
  background: var(--color-primary);
}
.section__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.015em;
  max-width: 18ch;
  margin-bottom: var(--space-4);
}
.section__lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 58ch;
  margin-bottom: var(--space-10);
}

/* ── Mission split layout ────────────────── */
.split {
  display: grid;
  gap: var(--space-8);
  align-items: center;
}
.split__image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-lg);
}
.split__image img {
  width: 100%; height: 100%;
  object-fit: cover;
}
@media (min-width: 880px) {
  .split {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
  .split--reverse .split__image { order: 2; }
}
.split__text h2 { margin-bottom: var(--space-4); }
.split__text p { margin-bottom: var(--space-4); color: var(--color-text-muted); }
.split__text .section__eyebrow { margin-bottom: var(--space-3); }

/* ── Value chain / Model ─────────────────── */
.chain {
  display: grid;
  gap: var(--space-4);
  counter-reset: chain;
}
.chain__step {
  position: relative;
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid color-mix(in oklab, var(--color-text) 8%, transparent);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive);
}
.chain__step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.chain__step-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.chain__step h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.chain__step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
@media (min-width: 640px) {
  .chain { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .chain { grid-template-columns: repeat(4, 1fr); }
}

/* ── Impact pillars ──────────────────────── */
.pillars {
  display: grid;
  gap: var(--space-6);
}
.pillar {
  padding: var(--space-10);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}
.pillar--people { background: var(--color-primary); color: var(--color-text-inverse); }
.pillar--planet { background: var(--color-soil); color: var(--color-text-inverse); }
.pillar--prosperity { background: var(--color-gold); color: var(--color-text-inverse); }

.pillar__icon {
  width: 56px; height: 56px;
  margin-bottom: var(--space-6);
  opacity: 0.9;
}
.pillar h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  margin-bottom: var(--space-3);
}
.pillar p {
  font-size: var(--text-base);
  color: color-mix(in oklab, currentColor 82%, transparent);
  max-width: 32ch;
}
@media (min-width: 860px) {
  .pillars { grid-template-columns: repeat(3, 1fr); }
}

/* ── Programs grid ───────────────────────── */
.programs {
  display: grid;
  gap: var(--space-6);
}
.program-card {
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in oklab, var(--color-text) 8%, transparent);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.program-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.program-card__tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.program-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.program-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
@media (min-width: 680px) {
  .programs { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 980px) {
  .programs { grid-template-columns: repeat(3, 1fr); }
}

/* ── Metrics ─────────────────────────────── */
.metrics {
  display: grid;
  gap: var(--space-8);
}
.metric {
  text-align: left;
}
.metric__value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 500;
  line-height: 1;
  color: var(--color-primary-highlight);
  margin-bottom: var(--space-2);
}
.metric__label {
  font-size: var(--text-sm);
  color: color-mix(in oklab, var(--color-text-inverse) 75%, transparent);
  max-width: 24ch;
}
@media (min-width: 640px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .metrics { grid-template-columns: repeat(4, 1fr); }
}

/* ── Full-bleed image ────────────────────── */
.fullbleed {
  width: 100%;
  height: 60vh;
  min-height: 360px;
  overflow: hidden;
  position: relative;
}
.fullbleed img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.fullbleed__caption {
  position: absolute;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  max-width: var(--content-default);
  width: 100%;
  padding-inline: var(--space-4);
  color: #fff;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-style: italic;
  text-shadow: 0 2px 12px rgba(0,0,0,0.6);
}

/* ── CTA band ────────────────────────────── */
.cta-band {
  text-align: center;
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}
.cta-band h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  max-width: 20ch;
  margin-inline: auto;
  margin-bottom: var(--space-4);
}
.cta-band p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}
.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

/* ── Contact ─────────────────────────────── */
.contact-grid {
  display: grid;
  gap: var(--space-8);
}
.contact-info dl {
  display: grid;
  gap: var(--space-5);
}
.contact-info dt {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}
.contact-info dd {
  font-size: var(--text-base);
  color: var(--color-text);
}
.contact-info a {
  color: var(--color-primary);
  text-decoration: none;
}
.contact-info a:hover { text-decoration: underline; }

.contact-form {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid color-mix(in oklab, var(--color-text) 8%, transparent);
}
.form-group { display: grid; gap: var(--space-2); }
.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.form-group input,
.form-group textarea,
.form-group select {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}
.form-group textarea { resize: vertical; min-height: 120px; }

@media (min-width: 860px) {
  .contact-grid {
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-12);
    align-items: start;
  }
}

/* ── Footer ──────────────────────────────── */
.footer {
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-16) var(--space-8);
}
.footer__top {
  display: grid;
  gap: var(--space-8);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
}
.footer__about {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 40ch;
}
.footer__links {
  display: grid;
  gap: var(--space-6);
}
.footer__links--col {
  grid-template-columns: 1fr;
}
.footer__links h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.footer__links ul {
  display: grid;
  gap: var(--space-2);
}
.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}
.footer__links a:hover { color: var(--color-primary); }
.footer__bottom {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-6) var(--space-4) 0;
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
@media (min-width: 760px) {
  .footer__top { grid-template-columns: 1.5fr 1fr 1fr 1fr; }
}

/* ── Reveal animation ────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  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: none;
}