/* MIMIC Digital Brand Palette:
   #FFFFFF (Canvas Light)
   #111111 (Canvas Dark)
   #1D4ED8 (Trust Blue - Primary)
   #CBD5E1 (Slate 300 - Border / Subtle)
*/
:root {
  --primary: #1D4ED8;
  --primary-hover: #1e40af;
  --primary-foreground: #FFFFFF;
  --primary-glow: rgba(29, 78, 216, 0.25);
  --brand-blue: #1D4ED8;
  --brand-blue-hover: #1e40af;
  --brand-blue-light: #eff6ff;

  --background: light-dark(#FFFFFF, #111111);
  --foreground: light-dark(#111111, #FFFFFF);
  --card: light-dark(#FFFFFF, #18191d);
  --card-foreground: light-dark(#111111, #FFFFFF);
  --border: light-dark(#CBD5E1, #2d333b);
  --input: light-dark(#CBD5E1, #2d333b);
  --ring: #1D4ED8;
  --muted: light-dark(#f8fafc, #1a1c23);
  --muted-foreground: light-dark(#475569, #CBD5E1);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', var(--font-sans);
  --radius-medium: 0.625rem;
  --radius-large: 0.875rem;
  --container-max: 1200px;
}

html[data-theme="light"], :root[data-theme="light"] {
  color-scheme: light;
  --background: #FFFFFF;
  --foreground: #111111;
  --card: #FFFFFF;
  --card-foreground: #111111;
  --border: #CBD5E1;
  --input: #CBD5E1;
  --muted: #f8fafc;
  --muted-foreground: #475569;
}

html[data-theme="dark"], :root[data-theme="dark"] {
  color-scheme: dark;
  --background: #111111;
  --foreground: #FFFFFF;
  --card: #18191d;
  --card-foreground: #FFFFFF;
  --border: #2d333b;
  --input: #2d333b;
  --muted: #1c1d22;
  --muted-foreground: #CBD5E1;
}

/* Base resets & typography */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  margin: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  letter-spacing: -0.025em;
  font-weight: 700;
  color: var(--foreground);
}

a:not(.button) {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:not(.button):hover {
  color: var(--primary-hover);
}

/* Base button appearance & high-contrast text */
:is(button, [type="submit"], [type="button"], a.button):not(.outline):not(.ghost):not(.theme-toggle-btn):not(.mobile-menu-toggle):not(.dialog-close-btn):not(.btn-white) {
  background-color: var(--primary);
  color: #FFFFFF !important;
  text-decoration: none;
  border: 1px solid var(--primary);
}

:is(button, [type="submit"], [type="button"], a.button):not(.outline):not(.ghost):not(.theme-toggle-btn):not(.mobile-menu-toggle):not(.dialog-close-btn):not(.btn-white):hover {
  background-color: var(--primary-hover);
  color: #FFFFFF !important;
  border-color: var(--primary-hover);
}

:is(button, [type="submit"], [type="button"], a.button).outline {
  background-color: transparent;
  color: light-dark(var(--primary), #60a5fa) !important;
  border: 1px solid var(--border);
  text-decoration: none;
}

:is(button, [type="submit"], [type="button"], a.button).outline:hover {
  background-color: var(--muted);
  color: light-dark(var(--primary-hover), #93c5fd) !important;
  border-color: light-dark(var(--primary), #60a5fa);
}

.btn-white,
.cta-banner .btn-white {
  background-color: #FFFFFF !important;
  color: #1D4ED8 !important;
  border: 1px solid #FFFFFF !important;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.btn-white:hover,
.cta-banner .btn-white:hover {
  background-color: #f8fafc !important;
  color: #1e3a8a !important;
  border-color: #f8fafc !important;
  transform: translateY(-2px);
}

/* Header & Top Navigation */
[data-topnav] {
  padding: 0.75rem 1.5rem;
  background-color: var(--background);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.topnav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  position: relative;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--foreground);
}

.brand-wrapper span {
  color: var(--foreground) !important;
  font-weight: 700;
  font-size: 1.15rem;
  font-family: var(--font-heading);
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-logo {
  height: 36px;
  width: auto;
  border-radius: 6px;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--muted-foreground);
  font-size: 0.925rem;
  font-weight: 500;
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-medium);
  transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background-color: light-dark(rgba(29, 78, 216, 0.08), rgba(29, 78, 216, 0.18));
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.65rem;
  cursor: pointer;
  border-radius: var(--radius-medium);
}

/* Mobile Menu Toggle Button (Desktop: Hidden) */
.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.65rem;
  cursor: pointer;
  border-radius: var(--radius-medium);
  color: var(--foreground);
  background: transparent;
  border: 1px solid var(--border);
}

.mobile-menu-toggle:hover {
  background-color: var(--muted);
}

/* Hero Section */
.hero-section {
  padding: 4.5rem 0 3.5rem;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background-color: light-dark(rgba(29, 78, 216, 0.08), rgba(96, 165, 250, 0.15));
  color: light-dark(var(--primary), #93c5fd);
  font-size: 0.825rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  border: 1px solid light-dark(rgba(29, 78, 216, 0.2), rgba(96, 165, 250, 0.35));
  max-width: 100%;
}

.hero-headline {
  font-size: clamp(2rem, 1.6rem + 1.8vw, 3.4rem);
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero-headline .highlight-blue {
  color: var(--primary);
  background: linear-gradient(135deg, #1D4ED8 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subhead {
  font-size: 1.15rem;
  color: var(--muted-foreground);
  margin-bottom: 2rem;
  max-width: 620px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.hero-image-wrap {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-large);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border);
  max-width: 100%;
}

.hero-image-wrap img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s ease;
}

.hero-image-wrap:hover img {
  transform: scale(1.02);
}

/* Sections */
.section-padding {
  padding: 4rem 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
  padding: 0 1rem;
}

.section-header h1,
.section-header h2 {
  font-size: clamp(1.8rem, 1.4rem + 1.4vw, 2.3rem);
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--muted-foreground);
  font-size: 1.05rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}

/* Responsive Grid Utility Classes */
.responsive-grid-2 {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 2.5rem;
  max-width: 1050px;
  margin: 0 auto;
  align-items: start;
}

.roadmap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 950px;
  margin: 0 auto;
}

.teaser-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

/* Service & Stage Cards */
.service-card {
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  border: 1px solid var(--border);
  height: 100%;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 12px 24px var(--primary-glow);
}

.card-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-medium);
  background-color: light-dark(rgba(29, 78, 216, 0.1), rgba(29, 78, 216, 0.2));
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.card-icon-box svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--muted-foreground);
  font-size: 0.95rem;
  line-height: 1.55;
  margin-bottom: 0;
}

/* Roadmap / Phase Cards */
.phase-card {
  border-left: 4px solid var(--primary);
}

.phase-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: light-dark(var(--primary), #60a5fa);
  margin-bottom: 0.5rem;
}

/* Calculator Styles */
.calculator-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: start;
}

.calc-card {
  border: 1px solid var(--border);
  padding: 2.25rem;
}

.calc-result-card {
  background: light-dark(#f8fafc, #16181f);
  border: 2px solid var(--primary);
  border-radius: var(--radius-large);
  padding: 2.25rem;
  position: sticky;
  top: 90px;
}

.calc-metric-box {
  background-color: light-dark(#ffffff, #111216);
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  text-align: center;
}

.calc-metric-box.highlight {
  border-color: var(--primary);
  background-color: light-dark(rgba(29, 78, 216, 0.05), rgba(29, 78, 216, 0.15));
}

.calc-metric-label {
  font-size: 0.85rem;
  color: var(--muted-foreground);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.calc-metric-value {
  font-size: 2.1rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--primary);
  line-height: 1.2;
}

.calc-metric-sub {
  font-size: 0.825rem;
  color: var(--muted-foreground);
  margin-top: 0.35rem;
}

.slider-group {
  margin-bottom: 1.5rem;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.slider-header label {
  font-weight: 600;
  font-size: 0.925rem;
}

.slider-header .slider-val {
  font-weight: 700;
  color: var(--primary);
  font-size: 1rem;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
  cursor: pointer;
}

/* Trust Bar / Certifications */
.trust-strip {
  background-color: var(--muted);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  text-align: center;
}

.trust-badge-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.trust-badge-icon {
  width: 36px;
  height: 36px;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.trust-badge-title {
  font-weight: 700;
  font-size: 1.05rem;
}

.trust-badge-sub {
  color: var(--muted-foreground);
  font-size: 0.85rem;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, #1D4ED8 0%, #1e40af 100%);
  color: #FFFFFF;
  border-radius: var(--radius-large);
  padding: 3.5rem 2.5rem;
  text-align: center;
  margin: 3.5rem 0;
}

.cta-banner h2 {
  color: #FFFFFF;
  font-size: clamp(1.6rem, 1.2rem + 1.2vw, 2.2rem);
  margin-bottom: 0.75rem;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto 1.75rem;
}

.cta-banner .btn-white {
  background-color: #FFFFFF;
  color: #1D4ED8;
  font-weight: 600;
  border: none;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.cta-banner .btn-white:hover {
  background-color: #f8fafc;
  color: #1e3a8a;
  transform: translateY(-2px);
}

/* Forms & Feedback */
.form-card {
  max-width: 680px;
  margin: 0 auto;
  border: 1px solid var(--border);
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group label {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--foreground);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  box-sizing: border-box;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin: 1.25rem 0;
}

.form-checkbox input[type="checkbox"] {
  width: auto;
  margin-top: 0.25rem;
  cursor: pointer;
  flex-shrink: 0;
}

.form-checkbox label {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  cursor: pointer;
}

.feedback-banner {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-medium);
  font-size: 0.925rem;
  margin-bottom: 1.25rem;
  display: none;
}

.feedback-banner.success {
  display: block;
  background-color: light-dark(#ecfdf5, rgba(16, 185, 129, 0.15));
  border: 1px solid light-dark(#a7f3d0, #059669);
  color: light-dark(#065f46, #6ee7b7);
}

.feedback-banner.error {
  display: block;
  background-color: light-dark(#fef2f2, rgba(239, 68, 68, 0.15));
  border: 1px solid light-dark(#fecaca, #dc2626);
  color: light-dark(#991b1b, #fca5a5);
}

/* Oat Dialog / Modal */
dialog.consultation-dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  background-color: var(--background);
  color: var(--foreground);
  max-width: 560px;
  width: 90vw;
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  max-height: 90vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.dialog-header h3 {
  margin: 0;
  font-size: 1.35rem;
}

.dialog-close-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  color: var(--muted-foreground);
  font-size: 1.25rem;
  line-height: 1;
}

.dialog-close-btn:hover {
  color: var(--foreground);
}

/* Footer */
footer.main-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 3.5rem 1.5rem 2rem;
  background-color: var(--muted);
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
}

.footer-nav {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav a {
  color: var(--muted-foreground);
  font-size: 0.925rem;
}

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

.footer-trust-line {
  font-size: 0.85rem;
  color: var(--muted-foreground);
  text-align: center;
  max-width: 800px;
  line-height: 1.5;
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

.footer-copy {
  color: var(--muted-foreground);
  font-size: 0.85rem;
  text-align: center;
  margin: 0;
}

/* -------------------------------------------------------------
   RESPONSIVE MOBILE BREAKPOINTS (< 840px and < 640px)
   ------------------------------------------------------------- */
@media (max-width: 840px) {
  [data-topnav] {
    padding: 0.65rem 1rem;
  }

  .mobile-menu-toggle {
    display: inline-flex;
  }

  /* Mobile Navigation Drawer */
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--background);
    border-bottom: 2px solid var(--border);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
    flex-direction: column;
    padding: 0.85rem 1rem;
    gap: 0.4rem;
    z-index: 99;
  }

  .nav-links.open {
    display: flex;
    animation: slideDown 0.18s ease-out;
  }

  .nav-links li {
    width: 100%;
    list-style: none;
  }

  .nav-links a {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border-radius: var(--radius-medium);
  }

  /* Grid Layouts Stack Cleanly on Tablets & Mobile */
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }

  .hero-subhead {
    margin-inline: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .responsive-grid-2,
  .roadmap-grid,
  .teaser-grid,
  .calculator-container {
    grid-template-columns: 1fr !important;
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }

  .calc-result-card {
    position: static;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

@media (max-width: 640px) {
  .hero-section {
    padding: 2.5rem 0 2rem;
  }

  .hero-headline {
    font-size: 1.85rem;
    line-height: 1.2;
    margin-bottom: 1rem;
  }

  .hero-subhead {
    font-size: 1rem;
    line-height: 1.55;
    margin-bottom: 1.5rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
  }

  .hero-actions .button,
  .hero-actions a.button {
    width: 100%;
    text-align: center;
    justify-content: center;
    padding: 0.75rem 1rem;
  }

  .section-padding {
    padding: 2.5rem 0;
  }

  .calc-card,
  .calc-result-card,
  .form-card,
  .card,
  .phase-card {
    padding: 1.35rem 1.15rem;
  }

  .cta-banner {
    padding: 2.25rem 1.25rem;
    margin: 2.5rem 0;
  }

  dialog.consultation-dialog {
    width: 95vw;
    padding: 1.25rem 1rem;
  }

  .footer-nav {
    gap: 1rem;
  }

  .calc-metric-value {
    font-size: 1.85rem;
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
/* Dark mode accessible high-contrast helpers */
html[data-theme="dark"] .text-primary-contrast,
:root[data-theme="dark"] .text-primary-contrast {
  color: #60a5fa !important;
}