/* AltGRC public website — layout and components */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--page-bg);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--primary);
}

a:hover {
  color: var(--primary-dark);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 100;
  background: var(--gray-900);
  color: var(--white);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 12px;
}

.site {
  min-height: 100vh;
  overflow-x: hidden;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--white);
  border-bottom: 1px solid var(--divider);
}

.header-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  text-decoration: none;
}

.brand img {
  height: 28px;
  display: block;
  width: auto;
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 26px;
  margin-left: auto;
}

.nav-desktop a.nav-link {
  font-size: var(--fs-base);
  color: var(--gray-700);
  text-decoration: none;
  font-weight: var(--fw-medium);
}

.nav-desktop a.nav-link:hover {
  color: var(--primary);
}

.nav-mobile-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.nav-login {
  font-size: var(--fs-sm);
  color: var(--gray-600);
  text-decoration: none;
  font-weight: var(--fw-medium);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 8px 4px;
}

.nav-login-outline {
  font-size: var(--fs-sm);
  color: var(--gray-500);
  text-decoration: none;
  font-weight: var(--fw-medium);
  padding: 8px 12px;
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  border: 1px solid var(--border-medium);
  background: var(--white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--gray-700);
}

.nav-panel {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding: 8px 20px 16px;
  border-top: 1px solid var(--divider);
  background: var(--white);
}

.nav-panel.is-open {
  display: flex;
}

.nav-panel a {
  padding: 12px 4px;
  font-size: var(--fs-base);
  color: var(--gray-700);
  text-decoration: none;
  min-height: 44px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
}

.nav-panel a:last-of-type {
  border-bottom: none;
}

.nav-panel-cta {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.nav-panel-cta .btn {
  flex: 1;
  justify-content: center;
}

@media (min-width: 900px) {
  .nav-mobile-bar {
    display: none;
  }

  .nav-desktop {
    display: flex;
  }

  .nav-panel {
    display: none !important;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--touch-target-min);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
}

.btn-secondary {
  background: var(--white);
  color: var(--gray-800);
  border-color: var(--border-medium);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

.btn-secondary-on-dark {
  background: transparent;
  color: var(--white);
  border-color: var(--gray-500);
}

.btn-secondary-on-dark:hover {
  border-color: var(--white);
  color: var(--white);
}

.btn-lg {
  min-height: 48px;
  padding: 14px 22px;
  font-size: var(--fs-lg);
}

.btn-block {
  width: 100%;
}

/* Sections */
.section {
  padding: 56px 24px;
  border-top: 1px solid var(--divider);
}

.section-narrow {
  max-width: 800px;
  margin: 0 auto;
}

.section-medium {
  max-width: 1000px;
  margin: 0 auto;
}

.section-wide {
  max-width: 1320px;
  margin: 0 auto;
}

.section-center {
  text-align: center;
}

.eyebrow {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

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

.section h2 {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  margin: 0 0 18px;
  color: var(--gray-900);
  line-height: 1.2;
  text-wrap: pretty;
}

.lead {
  font-size: var(--fs-body-comfortable);
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0 0 16px;
}

.lead:last-child {
  margin-bottom: 0;
}

.lead-emphasis {
  font-weight: var(--fw-medium);
  color: var(--gray-800);
}

.muted {
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text-muted);
}

/* Hero */
.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 80px 24px 64px;
  text-align: center;
  border-top: none;
}

.hero h1 {
  font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  line-height: 1.1;
  font-weight: var(--fw-bold);
  margin: 0 0 22px;
  color: var(--gray-900);
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 34px;
}

/* Trust */
.trust-label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.02em;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 28px;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px 40px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid var(--divider);
  border-radius: var(--radius-md);
  background: var(--white);
  font-size: var(--fs-sm);
  color: var(--gray-800);
}

.trust-item svg {
  flex: 0 0 auto;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  border: 1px solid var(--divider);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  background: var(--white);
  padding: 28px 24px;
}

.card-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--gray-900);
  margin: 0 0 8px;
}

.card-body {
  font-size: var(--fs-base);
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr));
  gap: 36px 48px;
}

.diff-title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  color: var(--gray-900);
  margin: 0 0 8px;
}

.diff-body {
  font-size: var(--fs-body-comfortable);
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

.journey {
  padding: 20px 0;
  border-bottom: 1px solid var(--divider);
}

.journey h3 {
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  margin: 0 0 8px;
  color: var(--gray-900);
}

.journey p {
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0;
}

.role-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.role-pill {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--gray-800);
  background: var(--gray-100);
  border-radius: var(--radius-pill);
  padding: 8px 18px;
}

/* CTA band */
.cta-band-wrap {
  max-width: 1320px;
  margin: 0 auto;
  padding: 64px 24px 24px;
  border-top: 1px solid var(--divider);
}

.cta-band {
  background: var(--gray-900);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-band h2 {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  margin: 0 0 10px;
  color: var(--white);
}

.cta-band p {
  font-size: var(--fs-body-comfortable);
  line-height: 1.6;
  color: var(--gray-300);
  margin: 0;
  max-width: 520px;
}

.cta-band-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.cta-band-actions a.text-link {
  font-size: var(--fs-sm);
  color: var(--gray-300);
  text-decoration: underline;
}

.cta-band-actions a.text-link:hover {
  color: var(--white);
}

/* Contact / demo */
.contact {
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.contact-panel {
  background: var(--white);
  border: 1px solid var(--divider);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
}

.contact-panel h3 {
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  margin: 0 0 10px;
  color: var(--gray-900);
}

.contact-panel p {
  font-size: var(--fs-base);
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0 0 18px;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-note {
  font-size: var(--fs-sm);
  color: var(--gray-600);
  margin: 16px 0 0;
  line-height: 1.5;
}

.contact-note a {
  font-weight: var(--fw-medium);
}

/* Future serverless form hook — hidden until endpoint is configured */
[data-demo-form-endpoint] {
  /* Reserved for future POST endpoint integration without redesign */
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--divider);
  background: var(--white);
}

.footer-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: flex;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-brand img {
  height: 24px;
  display: block;
  margin-bottom: 10px;
}

.footer-tagline {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--gray-800);
  margin-bottom: 4px;
}

.footer-meta {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.footer-cols {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col-title {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.footer-col a {
  font-size: var(--fs-sm);
  color: var(--gray-700);
  text-decoration: none;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--divider);
  padding: 16px 24px;
  max-width: 1320px;
  margin: 0 auto;
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

/* Legal subpages */
.legal-main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.legal-main h1 {
  font-size: var(--fs-3xl);
  margin: 0 0 16px;
}

.legal-main p,
.legal-main li {
  font-size: var(--fs-body-comfortable);
  line-height: 1.6;
  color: var(--gray-700);
}

.legal-main ul {
  padding-left: 1.25rem;
}

/* 404 */
.not-found {
  max-width: 560px;
  margin: 0 auto;
  padding: 96px 24px;
  text-align: center;
}

/* Utility / layout helpers (keep styles out of HTML for CSP) */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.muted-hero {
  max-width: 560px;
  margin: 0 auto;
}

.section-intro {
  max-width: 680px;
  margin: 0 auto 40px;
}

.section-intro-left {
  max-width: 640px;
  margin-bottom: 40px;
}

.section-intro-wide {
  max-width: 720px;
  margin-bottom: 36px;
}

.lead-narrow {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.muted-positioning {
  max-width: 680px;
  margin: 0 auto 32px;
  color: var(--gray-700);
}

.lead-about {
  color: var(--gray-700);
}

.lead-about:last-child {
  margin-bottom: 0;
}

.contact-intro {
  margin-bottom: 32px;
}

.contact-intro .lead {
  margin-bottom: 0;
}

.mb-0 {
  margin-bottom: 0;
}

.nav-desktop-always {
  display: flex;
}