/* style.css — Omni LPN design system + components */
/* Brand: deep teal #02465A + natural green #51951D, modernized SaaS/tech aesthetic */

:root,
[data-theme='light'] {
  /* Surfaces — cool, clean neutrals */
  --color-bg: #f4f7f8;
  --color-surface: #ffffff;
  --color-surface-2: #f7fafb;
  --color-surface-offset: #eaf0f2;
  --color-surface-offset-2: #e1e9ec;
  --color-surface-dynamic: #dbe5e8;
  --color-divider: #dde6e9;
  --color-border: #cfd9dd;

  /* Text */
  --color-text: #16242a;
  --color-text-muted: #51656b;
  --color-text-faint: #8a9aa0;
  --color-text-inverse: #f7fafb;

  /* Primary — deep brand teal */
  --color-primary: #02465a;
  --color-primary-hover: #013443;
  --color-primary-active: #022734;
  --color-primary-highlight: #d4e6eb;

  /* Accent — natural green (CTAs) */
  --color-accent: #4e8a1a;
  --color-accent-hover: #3f7215;
  --color-accent-active: #335c10;
  --color-accent-highlight: #e2eed4;

  /* Warm secondary (rare, training pillar) */
  --color-warm: #c2661a;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.9rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 220 / 0.06);
  --shadow-md: 0 6px 18px oklch(0.2 0.02 220 / 0.08);
  --shadow-lg: 0 18px 40px oklch(0.2 0.02 220 / 0.14);

  --content-narrow: 640px;
  --content-default: 980px;
  --content-wide: 1200px;
  --content-full: 100%;

  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.5vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --font-display: 'Cabinet Grotesk', 'Inter', sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;
}

[data-theme='dark'] {
  --color-bg: #0c1517;
  --color-surface: #121e22;
  --color-surface-2: #162328;
  --color-surface-offset: #162025;
  --color-surface-offset-2: #1b272d;
  --color-surface-dynamic: #243440;
  --color-divider: #1f2c32;
  --color-border: #2c3b42;

  --color-text: #d6e2e6;
  --color-text-muted: #8fa0a6;
  --color-text-faint: #5f7077;
  --color-text-inverse: #0c1517;

  --color-primary: #5ba6bd;
  --color-primary-hover: #3d8da6;
  --color-primary-active: #2a6f88;
  --color-primary-highlight: #1b3138;

  --color-accent: #82c246;
  --color-accent-hover: #6fa834;
  --color-accent-active: #5c8f28;
  --color-accent-highlight: #25331a;

  --color-warm: #e0922f;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 6px 18px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 18px 40px oklch(0 0 0 / 0.5);
}

/* Layout primitives */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

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

.section {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.section--tight {
  padding-block: clamp(var(--space-10), 4vw, var(--space-16));
}

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.hero .eyebrow {
  color: rgba(255, 255, 255, 0.92);
}

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

.hero .eyebrow--accent {
  color: #bfe27a;
}

/* Buttons */
.btn {
  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;
  line-height: 1;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full);
  min-height: 44px;
  text-decoration: none;
  white-space: nowrap;
  border: 1.5px solid transparent;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover {
  background: var(--color-accent-hover);
}
.btn--primary:active {
  background: var(--color-accent-active);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--light {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(6px);
}
.btn--light:hover {
  background: rgba(255, 255, 255, 0.22);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-primary);
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: box-shadow var(--transition-interactive);
}
.site-header.scrolled {
  box-shadow: var(--shadow-md);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-block: var(--space-3);
  padding-inline: var(--space-6);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: #fff;
}
.brand-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: #fff;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}
.brand-badge img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.01em;
}
.brand-tag {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.72);
  letter-spacing: 0.02em;
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav a {
  color: rgba(255, 255, 255, 0.86);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav a:hover,
.nav a:focus-visible {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}
.nav a[aria-current='page'] {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
}
.nav-cta {
  margin-left: var(--space-2);
  background: var(--color-accent);
  color: #fff;
}
.nav-cta:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.nav-toggle {
  display: none;
  color: #fff;
  padding: var(--space-2);
  min-width: 44px;
  min-height: 44px;
}

@media (max-width: 920px) {
  .nav {
    position: fixed;
    inset: 64px 0 auto 0;
    background: var(--color-primary);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-3) var(--space-4) var(--space-6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateY(-120%);
    transition: transform var(--transition-interactive);
    box-shadow: var(--shadow-lg);
  }
  .nav.open {
    transform: translateY(0);
  }
  .nav a {
    padding: var(--space-3);
    border-radius: var(--radius-md);
  }
  .nav-cta {
    margin: var(--space-2) 0 0;
    justify-content: center;
  }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
}
.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Hero */
.hero {
  position: relative;
  background: var(--color-primary);
  color: #fff;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    in oklab,
    var(--color-primary) 0%,
    color-mix(in oklab, var(--color-primary) 55%, transparent) 100%
  );
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  padding-inline: var(--space-6);
}
.hero--split .hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-12);
  align-items: center;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-3xl);
  letter-spacing: -0.025em;
  max-width: 16ch;
}
.hero .lead {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.9);
  max-width: 52ch;
  margin-top: var(--space-5);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}
@media (max-width: 860px) {
  .hero--split .hero-inner {
    grid-template-columns: 1fr;
  }
  .hero--split .hero-media {
    display: none;
  }
}

/* Pillar cards (homepage two-pillar) */
.pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}
@media (max-width: 820px) {
  .pillars {
    grid-template-columns: 1fr;
  }
}
.pillar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
  text-decoration: none;
  color: inherit;
}
.pillar:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.pillar-mark {
  width: 52px;
  height: 52px;
  color: var(--color-primary);
}
.pillar:nth-child(2) .pillar-mark {
  color: var(--color-accent-hover);
}
.pillar h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.pillar p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}
.pillar .tag {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.pillar-arrow {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
}
.pillar:nth-child(2) .pillar-arrow {
  color: var(--color-accent-hover);
}

/* Section heading block */
.section-head {
  max-width: var(--content-default);
  margin-bottom: var(--space-10);
}
.section-head .platform-mark {
  width: 56px;
  height: 56px;
  color: var(--color-primary);
  margin: 0 auto var(--space-4);
  display: block;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: var(--space-3);
}
.section-head p {
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  font-size: var(--text-lg);
}
.section-head.center {
  margin-inline: auto;
  text-align: center;
}
.section-head.center p {
  margin-inline: auto;
}

/* Feature list (narrative, not 3-col grid) */
.feature-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6) var(--space-10);
}
@media (max-width: 820px) {
  .feature-list {
    grid-template-columns: 1fr;
  }
}
.feature {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.feature-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  color: var(--color-primary);
}
.feature:nth-child(even) .feature-icon {
  color: var(--color-accent-hover);
}
.feature h4 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
}
.feature p {
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  font-size: var(--text-base);
}

/* Stat band */
.stat-band {
  background: var(--color-primary);
  color: #fff;
}
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  max-width: var(--content-default);
  margin-inline: auto;
  padding-block: clamp(var(--space-12), 5vw, var(--space-20));
  padding-inline: var(--space-6);
}
.stat .num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.stat .label {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.78);
  margin-top: var(--space-1);
}
@media (max-width: 720px) {
  .stats {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* CTA band */
.cta-band {
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-block: clamp(var(--space-10), 4vw, var(--space-16));
  padding-inline: var(--space-6);
}
.cta-band h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  max-width: 24ch;
}
.cta-band p {
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}
.cta-band-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* Split media section */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 5vw, var(--space-20));
  align-items: center;
}
.split.reverse {
  grid-template-columns: 1fr 1fr;
}
.split.reverse .split-media {
  order: 2;
}
.split-media {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.split-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
@media (max-width: 860px) {
  .split,
  .split.reverse {
    grid-template-columns: 1fr;
  }
  .split.reverse .split-media {
    order: 0;
  }
}

/* Product mark badge (QuickResponse) */
.product-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent-highlight);
  border: 1px solid color-mix(in oklab, var(--color-accent) 30%, transparent);
  border-radius: var(--radius-full);
  color: var(--color-accent-hover);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.product-badge svg {
  width: 18px;
  height: 18px;
}

/* Steps / how it works */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: var(--space-2);
}
.step::before {
  counter-increment: step;
  content: '0' counter(step);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent-hover);
  letter-spacing: 0.04em;
}
.step h4 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-2);
}
.step p {
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}
@media (max-width: 820px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.78);
  padding-block: clamp(var(--space-12), 4vw, var(--space-20)) var(--space-10);
}
.footer-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-10);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.footer-brand .brand-name {
  color: #fff;
}
.footer-col h5 {
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  font-size: var(--text-sm);
  padding-block: var(--space-1);
}
.footer-col a:hover {
  color: #fff;
}
.footer-bottom {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.6);
}
@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;
  }
}

/* Contact form */
.form-grid {
  display: grid;
  gap: var(--space-5);
}
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.field label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.field .req {
  color: var(--color-accent-hover);
}
.field input,
.field select,
.field textarea {
  font-family: var(--font-body);
  font-size: var(--text-base);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  min-height: 48px;
}
.field textarea {
  min-height: 140px;
  resize: vertical;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
  border-color: var(--color-primary);
}
.form-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.form-success {
  display: none;
  padding: var(--space-5);
  border-radius: var(--radius-md);
  background: var(--color-accent-highlight);
  border: 1px solid color-mix(in oklab, var(--color-accent) 30%, transparent);
  color: var(--color-accent-active);
  font-weight: 600;
}
.form-success.show {
  display: block;
}

/* Contact info cards */
.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-8);
}
@media (max-width: 640px) {
  .contact-cards {
    grid-template-columns: 1fr;
  }
}
.contact-card {
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.contact-card .label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
}
.contact-card a,
.contact-card p {
  margin-top: var(--space-2);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}
.contact-card a:hover {
  color: var(--color-primary);
}

/* Page hero (interior, smaller) */
.page-hero {
  background: var(--color-primary);
  color: #fff;
}
.page-hero-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
  padding-inline: var(--space-6);
}
.page-hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  max-width: 22ch;
}
.page-hero p {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.88);
  margin-top: var(--space-4);
  max-width: 58ch;
}

/* Prose blocks */
.prose p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  margin-top: var(--space-4);
}
.prose p:first-child {
  margin-top: 0;
}

/* Utility */
.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.text-muted { color: var(--color-text-muted); }
.flex-wrap { display: flex; flex-wrap: wrap; gap: var(--space-3); }