/* ============================================================
   Custom HSE — Site styles (landing + marketing)
   ============================================================ */

/* Layout primitives */
.container {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container-wide {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}
.section-sm {
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
}

.divider {
  border: 0;
  border-top: 1px solid var(--color-divider);
  margin: 0;
}

/* ============================================================
   Header / Nav
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg), transparent 20%);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-4);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}
.brand-name {
  font-weight: 600;
}
.brand-name b {
  font-weight: 700;
}
.brand-tag {
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  padding-left: var(--space-2);
  border-left: 1px solid var(--color-divider);
  margin-left: var(--space-1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--text-sm);
}
.nav-links a {
  color: var(--color-text-muted);
}
.nav-links a:hover {
  color: var(--color-text);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
  }
  /* Trim nav actions so CTAs fit on tablets/phones */
  .nav {
    gap: var(--space-3);
  }
  .nav-actions {
    gap: var(--space-2);
  }
  .nav-actions .btn-ghost {
    display: none; /* keep primary CTA + theme toggle only */
  }
  .brand-tag {
    display: none; /* hide secondary brand line on small screens */
  }
}

@media (max-width: 400px) {
  .nav-actions .btn-primary {
    padding-inline: var(--space-3);
  }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.2;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
}
.btn-ghost {
  color: var(--color-text);
  border-color: var(--color-border);
  background: var(--color-surface);
}
.btn-ghost:hover {
  border-color: var(--color-text-faint);
  color: var(--color-text);
}
.btn-link {
  color: var(--color-primary);
  padding: 0;
  font-weight: 500;
  font-size: var(--text-sm);
}
.btn-link:hover {
  color: var(--color-primary-hover);
}
.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
}
.icon-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.icon-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-faint);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  padding-block: clamp(var(--space-20), 10vw, var(--space-32)) clamp(var(--space-16), 6vw, var(--space-20));
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 20% 0%, color-mix(in oklab, var(--color-primary), transparent 88%), transparent 60%),
    radial-gradient(ellipse 60% 30% at 80% 10%, color-mix(in oklab, var(--color-blue), transparent 92%), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-16);
  align-items: center;
}
@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}
.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-success), transparent 85%);
}
.hero h1 {
  font-size: clamp(2.5rem, 1.2rem + 3.6vw, 4.25rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--color-text);
  max-width: 14ch;
}
.hero h1 em {
  font-style: normal;
  color: var(--color-primary);
}
.hero-lede {
  margin-top: var(--space-6);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.hero-meta div {
  min-width: 120px;
}
.hero-meta .k {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.hero-meta .v {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: var(--space-1);
}

/* Hero visual — stylized permit card */
.hero-visual {
  position: relative;
  aspect-ratio: 4 / 5;
  max-width: 480px;
  margin-inline: auto;
  width: 100%;
}
.permit-card {
  position: absolute;
  inset: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.permit-card-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-2);
}
.permit-card-header .permit-id {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-text);
}
.permit-card-body {
  flex: 1;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.permit-card-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.permit-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.permit-field .label {
  font-size: 11px;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}
.permit-field .value {
  font-size: var(--text-sm);
  color: var(--color-text);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 500;
  border: 1px solid transparent;
  white-space: nowrap;
}
.chip-warn {
  background: var(--color-warning-highlight);
  color: var(--color-warning);
  border-color: color-mix(in oklab, var(--color-warning), transparent 75%);
}
.chip-ai {
  background: var(--color-ai-highlight);
  color: var(--color-ai);
  border-color: color-mix(in oklab, var(--color-ai), transparent 75%);
}
.chip-success {
  background: var(--color-success-highlight);
  color: var(--color-success);
  border-color: color-mix(in oklab, var(--color-success), transparent 75%);
}
.chip-muted {
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  border-color: var(--color-divider);
}

/* AI callout floats off the bottom of the permit card */
.ai-callout {
  position: absolute;
  right: -24px;
  bottom: -28px;
  width: 280px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4);
  transform: rotate(2deg);
}
.ai-callout .label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-ai);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}
.ai-callout .label svg {
  width: 12px;
  height: 12px;
}
.ai-callout .title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.ai-callout .citation {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

@media (max-width: 960px) {
  .ai-callout {
    display: none;
  }
}

/* ============================================================
   Logo strip
   ============================================================ */
.logo-strip {
  padding-block: var(--space-10);
  border-block: 1px solid var(--color-divider);
  background: var(--color-surface-2);
}
.logo-strip .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.logo-strip .label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.logo-strip .logos {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  flex-wrap: wrap;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}
.logo-strip .logos span {
  opacity: 0.75;
}

/* ============================================================
   Section heading
   ============================================================ */
.section-heading {
  max-width: 720px;
  margin-bottom: var(--space-12);
}
.section-heading .eyebrow {
  margin-bottom: var(--space-4);
}
.section-heading h2 {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.section-heading p {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* ============================================================
   Problem / Why-now
   ============================================================ */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}
@media (max-width: 720px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }
}
.problem-card {
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}
.problem-card .stat {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.02em;
  font-family: var(--font-mono);
  line-height: 1;
}
.problem-card .unit {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}
.problem-card h3 {
  margin-top: var(--space-5);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
}
.problem-card p {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.problem-card cite {
  display: block;
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-style: normal;
  font-family: var(--font-mono);
}

/* ============================================================
   Architecture / Modules
   ============================================================ */
.arch {
  background: var(--color-surface-2);
}
.module-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
@media (max-width: 900px) {
  .module-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 540px) {
  .module-grid {
    grid-template-columns: 1fr;
  }
}
.module-card {
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  position: relative;
}
.module-card.ship {
  border-color: color-mix(in oklab, var(--color-primary), transparent 50%);
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--color-primary), transparent 80%);
}
.module-card.soon {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
}
.module-card .mod-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.module-card h3 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.module-card.soon h3 {
  color: var(--color-text-muted);
}
.module-card .icon {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
}
.module-card.soon .icon {
  color: var(--color-text-faint);
}
.module-card ul {
  list-style: none;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.module-card ul li::before {
  content: '·';
  margin-right: 6px;
  color: var(--color-text-faint);
}

/* ============================================================
   Differentiators
   ============================================================ */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
@media (max-width: 900px) {
  .diff-grid {
    grid-template-columns: 1fr;
  }
}
.diff-card {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.diff-card .icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}
.diff-card h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
}
.diff-card p {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============================================================
   CTA / Footer (landing page only — body:not(.app))
   ============================================================ */
body:not(.app) .cta {
  background: linear-gradient(in oklab, var(--color-primary-active), var(--color-primary));
  color: var(--color-text-inverse);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 6vw, var(--space-16));
  margin-block: var(--space-16);
  position: relative;
  overflow: hidden;
}
body:not(.app) .cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(255, 255, 255, 0.1), transparent 60%);
}
body:not(.app) .cta-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--space-10);
  align-items: end;
}
@media (max-width: 720px) {
  body:not(.app) .cta-inner {
    grid-template-columns: 1fr;
  }
}
body:not(.app) .cta h2 {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 24ch;
}
body:not(.app) .cta p {
  color: rgba(255, 255, 255, 0.8);
  margin-top: var(--space-4);
  max-width: 48ch;
  font-size: var(--text-base);
}
body:not(.app) .cta-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.btn-white {
  background: #fff;
  color: var(--color-primary);
}
.btn-white:hover {
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-primary);
}
.btn-outline-white {
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  background: transparent;
}
.btn-outline-white:hover {
  border-color: rgba(255, 255, 255, 0.8);
  color: #fff;
}

.site-footer {
  padding-block: var(--space-10);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.site-footer a {
  color: var(--color-text-muted);
}
.site-footer a:hover {
  color: var(--color-text);
}
.footer-nav {
  display: flex;
  gap: var(--space-6);
}