/* ==========================================================================
   PreopFlow Marketing Website — Design System & Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */

:root {
  /* Colors */
  --bg: #F6F9FC;
  --surface: #FFFFFF;
  --text: #0F172A;
  --muted: #475569;
  --primary: #1D4ED8;
  --primary-hover: #1E40AF;
  --primary-light: #EFF6FF;
  --primary-2: #6D28D9;
  --primary-2-hover: #5B21B6;
  --success: #0F766E;
  --success-light: #F0FDFA;
  --border: #DCE4EE;
  --error: #DC2626;
  --error-light: #FEF2F2;

  /* Typography */
  --font-heading: 'Sora', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Font sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

  /* Spacing (8px base scale) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;
  --space-9: 4rem;
  --space-10: 5rem;
  --space-11: 6rem;
  --space-12: 8rem;

  /* Layout */
  --max-width: 75rem;    /* 1200px */
  --radius: 0.75rem;
  --radius-sm: 0.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Header */
  --header-height: 4.5rem;
}

/* --------------------------------------------------------------------------
   2. Reset & Base
   -------------------------------------------------------------------------- */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

button {
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

@media (min-width: 768px) {
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }
}

@media (min-width: 1024px) {
  h1 { font-size: var(--text-5xl); }
  h2 { font-size: var(--text-4xl); }
}

/* --------------------------------------------------------------------------
   3. Layout Utilities
   -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-2);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container { padding-inline: var(--space-6); }
}

@media (min-width: 1024px) {
  .container { padding-inline: var(--space-8); }
}

.section {
  padding-block: var(--space-9);
}

@media (min-width: 768px) {
  .section { padding-block: var(--space-10); }
}

@media (min-width: 1024px) {
  .section { padding-block: var(--space-12); }
}

.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }
.grid-12 { grid-template-columns: 1fr; }

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .col-span-2 { grid-column: span 2 / span 2; }
  .col-span-3 { grid-column: span 3 / span 3; }
  .col-span-4 { grid-column: span 4 / span 4; }
  .col-span-5 { grid-column: span 5 / span 5; }
  .col-span-6 { grid-column: span 6 / span 6; }
  .col-span-7 { grid-column: span 7 / span 7; }
  .col-span-8 { grid-column: span 8 / span 8; }
  .col-span-9 { grid-column: span 9 / span 9; }
  .col-span-10 { grid-column: span 10 / span 10; }
  .col-span-11 { grid-column: span 11 / span 11; }
  .col-span-12 { grid-column: span 12 / span 12; }
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }

.text-center { text-align: center; }
.text-muted { color: var(--muted); }
.text-sm { font-size: var(--text-sm); }
.text-lg { font-size: var(--text-lg); }
.font-mono { font-family: var(--font-mono); }
.font-semibold { font-weight: 600; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --------------------------------------------------------------------------
   4. Components
   -------------------------------------------------------------------------- */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.5;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: #fff;
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background-color: var(--primary-light);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-lg);
}

.action-link {
  display: inline-flex;
  align-items: center;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

.action-link:hover {
  text-decoration-thickness: 2px;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-4);
  font-size: var(--text-xl);
}

.card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.card p {
  color: var(--muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background-color: var(--success-light);
  color: var(--success);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1px solid currentColor;
}

/* Section header */
.section-header {
  text-align: center;
  max-width: 48rem;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.section-header p {
  margin-top: var(--space-3);
  color: var(--muted);
  font-size: var(--text-lg);
}

/* CTA band */
.cta-band {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  text-align: center;
  padding-block: var(--space-10);
}

.cta-band h2 { color: #fff; }

.cta-band p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 32rem;
  margin-inline: auto;
}

.cta-band .btn-primary {
  background-color: #fff;
  color: var(--primary);
}

.cta-band .btn-primary:hover {
  background-color: rgba(255, 255, 255, 0.9);
}

.cta-band .action-link {
  color: rgba(255, 255, 255, 0.9);
}

.cta-band .action-link:hover {
  color: #fff;
}

/* --------------------------------------------------------------------------
   5. Site Header
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
}

.site-header.nav-open {
  background: var(--surface);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.site-logo span {
  color: var(--primary);
}

.nav-links {
  display: none;
  gap: var(--space-5);
  align-items: center;
}

@media (min-width: 1024px) {
  .nav-links { display: flex; }
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--muted);
  transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
}

.nav-links .btn {
  font-size: var(--text-sm);
}

.nav-links .btn-primary {
  color: #fff;
}

.nav-links .btn-primary:hover {
  color: #fff;
}

/* Hamburger button */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.nav-toggle:hover {
  background-color: var(--bg);
}

@media (min-width: 1024px) {
  .nav-toggle { display: none; }
}

.nav-toggle-icon {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: var(--text);
  position: relative;
  transition: background var(--transition-fast);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: var(--text);
  left: 0;
  transition: transform var(--transition-fast);
}

.nav-toggle-icon::before { top: -6px; }
.nav-toggle-icon::after { top: 6px; }

.nav-open .nav-toggle-icon { background: transparent; }
.nav-open .nav-toggle-icon::before { transform: rotate(45deg); top: 0; }
.nav-open .nav-toggle-icon::after { transform: rotate(-45deg); top: 0; }

/* Mobile nav panel */
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: calc(100vh - var(--header-height));
  height: calc(100dvh - var(--header-height));
  background: var(--surface);
  padding: var(--space-4) var(--space-4) calc(var(--space-6) + env(safe-area-inset-bottom));
  z-index: 101;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  border-top: 1px solid var(--border);
}

.nav-open .mobile-nav { display: block; }

.mobile-nav a:not(.btn) {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.mobile-nav .btn {
  display: flex;
  width: 100%;
  margin-top: var(--space-5);
  color: #fff;
}

@media (min-width: 1024px) {
  .mobile-nav { display: none !important; }
}

/* --------------------------------------------------------------------------
   6. Site Footer
   -------------------------------------------------------------------------- */

.site-footer {
  background: var(--text);
  color: rgba(255, 255, 255, 0.7);
  padding-block: var(--space-9) var(--space-6);
}

.footer-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}

.site-footer h4 {
  color: #fff;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

.site-footer a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-sm);
}

.site-footer a:hover { color: #fff; }

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-summary {
  max-width: 28rem;
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.footer-region {
  margin-top: var(--space-5);
  font-size: var(--text-sm);
}

.footer-contact {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
}

.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--text-sm);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-brand {
  font-family: var(--font-heading);
  font-weight: 600;
  color: #fff;
  font-size: var(--text-base);
}

/* --------------------------------------------------------------------------
   7. Page-Specific: Home
   -------------------------------------------------------------------------- */

/* Hero */
.hero {
  padding-top: var(--space-12);
  padding-bottom: var(--space-9);
}

.hero h1 {
  max-width: 48rem;
  margin-inline: auto;
}

.hero-sub {
  max-width: 40rem;
  margin-inline: auto;
  margin-top: var(--space-4);
}

.hero-ctas {
  margin-top: var(--space-6);
}

.hero-badges {
  margin-top: var(--space-6);
}

/* Problem cards */
.problem-section {
  background: var(--surface);
}

/* Process detail (expandable) */
.process-detail {
  margin-top: var(--space-6);
  max-width: 48rem;
  margin-inline: auto;
}

.process-detail summary {
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--primary);
  padding: var(--space-3) 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.process-detail summary::-webkit-details-marker {
  display: none;
}

.process-detail summary::before {
  content: '+';
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--primary);
  width: 1.5rem;
  flex-shrink: 0;
}

details[open] > summary::before {
  content: '−';
}

.process-steps {
  padding: var(--space-4) 0;
  counter-reset: step;
}

.process-steps li {
  counter-increment: step;
  padding: var(--space-3) 0;
  padding-left: var(--space-7);
  position: relative;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

.process-steps li:last-child {
  border-bottom: none;
}

.process-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--primary);
  font-size: var(--text-sm);
  width: 1.75rem;
  height: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: var(--radius-full);
}

/* Steps (How it works) */
.step {
  text-align: center;
  padding: var(--space-5);
}

.step-number {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-3);
}

.step h3 {
  margin-bottom: var(--space-2);
}

.step p {
  color: var(--muted);
  font-size: var(--text-sm);
}

.steps-result {
  margin-top: var(--space-6);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  text-align: center;
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
}

/* Comparison / Differentiation */
.comparison {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 768px) {
  .comparison { grid-template-columns: 1fr 1fr; }
}

.comparison-col {
  padding: var(--space-5);
  border-radius: var(--radius);
}

.comparison-col h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.comparison-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.comparison-col li {
  padding-left: var(--space-5);
  position: relative;
  font-size: var(--text-sm);
  color: var(--muted);
  line-height: 1.6;
}

.comparison-col li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
}

.comparison-legacy {
  background: var(--bg);
  border: 1px solid var(--border);
}

.comparison-legacy li::before {
  background: var(--muted);
}

.comparison-preopflow {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
}

.comparison-preopflow li::before {
  background: var(--primary);
}

/* Business value metrics */
.metric {
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--space-3);
}

.references {
  margin-top: var(--space-6);
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--muted);
  line-height: 1.8;
}

.references a {
  color: var(--muted);
  text-decoration: underline;
}

/* Trust teaser */
.trust-teaser {
  background: var(--surface);
}

/* --------------------------------------------------------------------------
   8. Page-Specific: Product
   -------------------------------------------------------------------------- */

.product-overview {
  max-width: 48rem;
}

.product-overview p {
  color: var(--muted);
  font-size: var(--text-lg);
  line-height: 1.7;
  margin-top: var(--space-4);
}

.module-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.module-card h3 {
  font-size: var(--text-lg);
}

.module-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  margin-top: var(--space-3);
}

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

/* Workflow timeline */
.workflow-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 768px) {
  .workflow-timeline { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}

.timeline-col h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--border);
}

.timeline-col.timeline-after h3 {
  border-bottom-color: var(--primary);
}

.timeline-item {
  padding: var(--space-3) 0;
  padding-left: var(--space-5);
  position: relative;
  font-size: var(--text-sm);
  color: var(--muted);
  border-left: 2px solid var(--border);
}

.timeline-after .timeline-item {
  border-left-color: var(--primary);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: var(--space-3);
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--border);
}

.timeline-after .timeline-item::before {
  background: var(--primary);
}

/* --------------------------------------------------------------------------
   9. Page-Specific: Trust & Security
   -------------------------------------------------------------------------- */

.trust-hero {
  text-align: center;
  padding-top: var(--space-12);
}

.trust-hero p {
  max-width: 40rem;
  margin-inline: auto;
  margin-top: var(--space-4);
  color: var(--muted);
  font-size: var(--text-lg);
}

.trust-card {
  text-align: center;
}

.trust-card-icon {
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius);
  margin-inline: auto;
  margin-bottom: var(--space-4);
  font-size: var(--text-2xl);
}

.governance-section {
  max-width: 48rem;
  margin-inline: auto;
  text-align: center;
}

.governance-section p {
  color: var(--muted);
  font-size: var(--text-lg);
  line-height: 1.7;
  margin-top: var(--space-4);
}

/* --------------------------------------------------------------------------
   10. Page-Specific: About
   -------------------------------------------------------------------------- */

.about-hero {
  text-align: center;
  padding-top: var(--space-12);
}

.about-hero p {
  max-width: 40rem;
  margin-inline: auto;
  margin-top: var(--space-4);
  color: var(--muted);
  font-size: var(--text-lg);
}

.founder-section {
  max-width: 48rem;
  margin-inline: auto;
}

.founder-section p {
  color: var(--muted);
  line-height: 1.7;
  margin-top: var(--space-4);
}

.vision-section {
  max-width: 48rem;
  margin-inline: auto;
  text-align: center;
}

.vision-section p {
  color: var(--muted);
  font-size: var(--text-lg);
  line-height: 1.7;
  margin-top: var(--space-4);
}

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

.brand-lockup {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
  margin-top: var(--space-5);
}

.brand-lockup .brand-product {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
}

.brand-lockup .brand-product span {
  color: var(--primary);
}

.brand-lockup .brand-company {
  color: var(--muted);
  font-size: var(--text-lg);
}

.principle-card {
  text-align: center;
}

.principle-icon {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--success-light);
  color: var(--success);
  border-radius: var(--radius);
  margin-inline: auto;
  margin-bottom: var(--space-4);
  font-size: var(--text-xl);
}

/* --------------------------------------------------------------------------
   11. Page-Specific: Contact
   -------------------------------------------------------------------------- */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .contact-layout { grid-template-columns: 1fr 1.2fr; }
}

.contact-intro p {
  margin-top: var(--space-3);
}

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-group label {
  display: block;
  font-weight: 500;
  font-size: var(--text-sm);
  margin-bottom: var(--space-1);
}

.form-group .required {
  color: var(--error);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
}

.form-group input.is-invalid,
.form-group select.is-invalid,
.form-group textarea.is-invalid {
  border-color: var(--error);
  background: var(--error-light);
}

.form-group textarea {
  resize: vertical;
  min-height: 6rem;
}

.form-error {
  display: block;
  color: var(--error);
  font-size: var(--text-xs);
  margin-top: var(--space-1);
  min-height: 1.2em;
}

.form-success {
  background: var(--success-light);
  border: 1px solid var(--success);
  border-radius: var(--radius);
  padding: var(--space-6);
  text-align: center;
}

@media (min-width: 768px) {
  .form-success { grid-column: 2; }
}

.form-success p:first-child {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--success);
}

/* --------------------------------------------------------------------------
   12. Page-Specific: Legal (Privacy, Terms)
   -------------------------------------------------------------------------- */

.legal-page {
  padding-top: var(--space-12);
}

.legal-page h1 {
  margin-bottom: var(--space-3);
}

.legal-content {
  margin-top: var(--space-6);
  line-height: 1.8;
  color: var(--muted);
}

.legal-content p + p {
  margin-top: var(--space-4);
}

/* --------------------------------------------------------------------------
   13. Page-Specific: 404
   -------------------------------------------------------------------------- */

.error-page {
  padding-top: var(--space-12);
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-page .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 6rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.error-page h1 {
  margin-bottom: var(--space-3);
}

.error-page p {
  max-width: 28rem;
  margin-bottom: var(--space-6);
}

/* --------------------------------------------------------------------------
   14. Scroll Animations
   -------------------------------------------------------------------------- */

.fade-in {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}