/*
 * Swift Check AI — theme layer on top of Bootstrap 5.3
 * Bootstrap handles layout (container / row / col), navbar, accordion and
 * spacing utilities. This file holds the brand tokens and the few components
 * Bootstrap has no equivalent for.
 */

/* ---------- Brand tokens ---------- */
:root {
  --radius: 0.5rem;
  --background: oklch(99% 0.006 170);
  --foreground: oklch(22% 0.03 180);
  --card: oklch(100% 0 0);
  --primary: oklch(34% 0.055 175);
  --primary-foreground: oklch(98% 0.01 170);
  --secondary: oklch(95.5% 0.014 175);
  --muted-foreground: oklch(50% 0.025 180);
  --accent: oklch(78% 0.15 172);
  --accent-foreground: oklch(20% 0.04 180);
  --destructive: oklch(58% 0.2 25);
  --border: oklch(90% 0.014 175);
  --deep: oklch(24% 0.045 178);
  --deep-foreground: oklch(95% 0.015 170);
  --surf-foam: oklch(96% 0.02 175);
  --signal: oklch(80% 0.16 88);
  --hull: oklch(18% 0.035 180);

  --gradient-deep: linear-gradient(160deg, oklch(26% 0.05 178), oklch(15% 0.03 190));
  --gradient-tide: linear-gradient(90deg, oklch(78% 0.15 172), oklch(72% 0.12 195));
  --shadow-glow: 0 8px 30px -8px color-mix(in oklab, var(--accent) 55%, transparent);
  --shadow-card: 0 1px 2px oklch(24% 0.045 178 / 0.06), 0 12px 32px -16px oklch(24% 0.045 178 / 0.25);
  --foam-line: color-mix(in oklab, var(--surf-foam) 14%, transparent);

  --font-sans: "Manrope", ui-sans-serif, system-ui, sans-serif;
  --font-display: "Sora", ui-sans-serif, system-ui, sans-serif;

  /* Map brand tokens onto Bootstrap */
  --bs-body-bg: var(--background);
  --bs-body-color: var(--foreground);
  --bs-body-font-family: var(--font-sans);
  --bs-border-color: var(--border);
  --bs-secondary-color: var(--muted-foreground);
}

/* ---------- Base ---------- */
/* Bootstrap enables smooth scrolling, which the mobile menu's collapse
   animation interrupts — anchor links from the menu would not scroll. */
:root {
  scroll-behavior: auto;
}

body {
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-size: inherit;
  font-weight: inherit;
  line-height: 1.2;
  letter-spacing: -0.03em;
  text-wrap: balance;
  margin: 0;
}

p,
dl,
dd,
ul,
figure,
blockquote {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.container {
  max-width: 80rem;
  padding-inline: 1.25rem;
}

.container.container-5xl {
  max-width: 64rem;
}

.container.container-3xl {
  max-width: 48rem;
}

@media (min-width: 992px) {
  .container {
    padding-inline: 2rem;
  }
}

/* Responsive helpers Bootstrap doesn't ship */
.p-7 {
  padding: 1.75rem !important;
}

.p-8 {
  padding: 2rem !important;
}

@media (min-width: 576px) {
  .p-sm-7 {
    padding: 1.75rem !important;
  }

  .p-sm-8 {
    padding: 2rem !important;
  }

  .w-sm-auto {
    width: auto !important;
  }
}

@media (min-width: 992px) {
  .w-lg-auto {
    width: auto !important;
  }
}

/* ---------- Typography ---------- */
.font-display {
  font-family: var(--font-display);
}

.fw-extrabold {
  font-weight: 800;
}

.text-xs {
  font-size: 0.75rem;
}

.text-sm {
  font-size: 0.875rem;
}

.text-base {
  font-size: 1rem;
}

.text-lg {
  font-size: 1.125rem;
}

.text-xl {
  font-size: 1.25rem;
}

.text-2xl {
  font-size: 1.5rem;
}

.text-3xl {
  font-size: 1.875rem;
  line-height: 1.2;
}

.text-4xl {
  font-size: 2.25rem;
  line-height: 1.1;
}

.leading-relaxed {
  line-height: 1.625;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}

.hero-title {
  font-size: 2.25rem;
  line-height: 1.05;
  font-weight: 800;
}

.section-title {
  font-size: 1.875rem;
  font-weight: 700;
}

.section-title-sm {
  font-size: 1.875rem;
  font-weight: 700;
}

@media (min-width: 576px) {
  .hero-title {
    font-size: 3.75rem;
  }

  .section-title {
    font-size: 3rem;
    line-height: 1;
  }

  .section-title-sm {
    font-size: 2.25rem;
    line-height: 1.11;
  }
}

@media (min-width: 992px) {
  .hero-title {
    font-size: 4.5rem;
  }
}

.text-tide {
  background-image: var(--gradient-tide);
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
}

/* ---------- Colour utilities ---------- */
.text-brand {
  color: var(--primary);
}

.text-accent {
  color: var(--accent);
}

.text-accent-80 {
  color: color-mix(in oklab, var(--accent) 80%, transparent);
}

.text-destructive {
  color: var(--destructive);
}

.text-destructive-70 {
  color: color-mix(in oklab, var(--destructive) 70%, transparent);
}

.text-signal {
  color: var(--signal);
}

.text-foam {
  color: var(--surf-foam);
}

.text-foam-85 { color: color-mix(in oklab, var(--surf-foam) 85%, transparent); }
.text-foam-80 { color: color-mix(in oklab, var(--surf-foam) 80%, transparent); }
.text-foam-75 { color: color-mix(in oklab, var(--surf-foam) 75%, transparent); }
.text-foam-70 { color: color-mix(in oklab, var(--surf-foam) 70%, transparent); }
.text-foam-65 { color: color-mix(in oklab, var(--surf-foam) 65%, transparent); }
.text-foam-60 { color: color-mix(in oklab, var(--surf-foam) 60%, transparent); }
.text-foam-55 { color: color-mix(in oklab, var(--surf-foam) 55%, transparent); }
.text-foam-45 { color: color-mix(in oklab, var(--surf-foam) 45%, transparent); }

.bg-hull {
  background-color: var(--hull);
}

.bg-soft {
  background-color: var(--secondary);
}

.bg-card {
  background-color: var(--card);
}

.surface-deep {
  background-image: var(--gradient-deep);
  color: var(--deep-foreground);
}

.border-foam {
  border: 1px solid var(--foam-line) !important;
}

/* ---------- Icons (inline Lucide SVGs) ---------- */
.icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.icon-xs { width: 0.875rem; height: 0.875rem; }
.icon-sm { width: 1rem; height: 1rem; }
.icon-lg { width: 1.5rem; height: 1.5rem; }
.icon-xl { width: 2rem; height: 2rem; }

/* ---------- Sections ---------- */
.section {
  padding-block: 6rem;
}

@media (min-width: 992px) {
  .section {
    padding-block: 8rem;
  }
}

.mw-3xl { max-width: 48rem; }
.mw-2xl { max-width: 42rem; }
.mw-xl { max-width: 36rem; }
.mw-xs { max-width: 20rem; }

/* ---------- Buttons ---------- */
.btn-accent {
  --bs-btn-color: var(--accent-foreground);
  --bs-btn-bg: var(--accent);
  --bs-btn-border-color: var(--accent);
  --bs-btn-hover-color: var(--accent-foreground);
  --bs-btn-hover-bg: var(--accent);
  --bs-btn-hover-border-color: var(--accent);
  --bs-btn-active-color: var(--accent-foreground);
  --bs-btn-active-bg: var(--accent);
  --bs-btn-active-border-color: var(--accent);
  --bs-btn-font-weight: 600;
  --bs-btn-font-size: 0.875rem;
  --bs-btn-padding-x: 2rem;
  --bs-btn-padding-y: 0.5rem;
  --bs-btn-border-radius: calc(var(--radius) - 2px);
  box-shadow: var(--shadow-glow);
}

.btn-accent:hover {
  filter: brightness(1.1);
}

.btn-outline-foam {
  --bs-btn-color: var(--surf-foam);
  --bs-btn-bg: transparent;
  --bs-btn-border-color: color-mix(in oklab, var(--surf-foam) 35%, transparent);
  --bs-btn-hover-color: var(--surf-foam);
  --bs-btn-hover-bg: color-mix(in oklab, var(--surf-foam) 10%, transparent);
  --bs-btn-hover-border-color: color-mix(in oklab, var(--surf-foam) 35%, transparent);
  --bs-btn-active-color: var(--surf-foam);
  --bs-btn-active-bg: color-mix(in oklab, var(--surf-foam) 10%, transparent);
  --bs-btn-active-border-color: color-mix(in oklab, var(--surf-foam) 35%, transparent);
  --bs-btn-font-weight: 500;
  --bs-btn-border-radius: calc(var(--radius) - 2px);
}

.btn-accent.btn-lg,
.btn-outline-foam.btn-lg {
  --bs-btn-font-size: 1rem;
  --bs-btn-padding-x: 2.25rem;
  min-height: 3.25rem;
}

.btn-accent,
.btn-outline-foam {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
  min-height: 2.5rem;
}

/* ---------- Header / navbar ---------- */
.site-header {
  --bs-navbar-padding-y: 0;
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s, border-color 0.3s;
}

.site-header.is-scrolled {
  background-color: color-mix(in oklab, var(--hull) 88%, transparent);
  border-bottom-color: color-mix(in oklab, var(--surf-foam) 12%, transparent);
  backdrop-filter: blur(12px);
}

.site-header > .container {
  min-height: 4.5rem;
}

.site-header .navbar-brand img {
  height: 5rem;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  margin-block: -0.25rem;
}

.site-header .nav-link {
  --bs-nav-link-font-size: 0.875rem;
  --bs-nav-link-font-weight: 500;
  color: color-mix(in oklab, var(--surf-foam) 70%, transparent);
}

.site-header .nav-link:hover,
.site-header .nav-link:focus {
  color: var(--surf-foam);
}

.site-header .navbar-toggler {
  color: var(--surf-foam);
  border: 0;
  padding: 0;
}

.site-header .navbar-toggler:focus {
  box-shadow: none;
}

.site-header .navbar-toggler[aria-expanded="true"] .icon-open,
.site-header .navbar-toggler[aria-expanded="false"] .icon-close {
  display: none;
}

@media (min-width: 992px) {
  .site-header .navbar-nav {
    gap: 1.75rem;
  }

  .site-header .navbar-nav .nav-link {
    padding-inline: 0;
  }
}

@media (max-width: 991.98px) {
  .site-header .navbar-collapse {
    margin-inline: -1.25rem;
    padding: 1.25rem;
    background-color: var(--hull);
    border-top: 1px solid color-mix(in oklab, var(--surf-foam) 12%, transparent);
  }

  .site-header .nav-link {
    color: color-mix(in oklab, var(--surf-foam) 80%, transparent);
    padding-block: 0.5rem;
  }
}

/* ---------- Hero ---------- */
.hero {
  isolation: isolate;
  overflow: hidden;
}

.hero-bg,
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
}

.hero-bg {
  object-fit: cover;
  opacity: 0.7;
}

.hero-overlay {
  background-image: linear-gradient(
    oklch(18% 0.035 180 / 0.85),
    oklch(18% 0.035 180 / 0.6) 45%,
    oklch(18% 0.035 180 / 0.98)
  );
}

.hero-inner {
  padding-top: 10rem;
  padding-bottom: 6rem;
}

@media (min-width: 992px) {
  .hero-inner {
    padding-top: 13rem;
    padding-bottom: 8rem;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid color-mix(in oklab, var(--accent) 35%, transparent);
  border-radius: 50rem;
  padding: 0.375rem 0.875rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.025em;
  text-transform: uppercase;
  color: var(--accent);
}

.stats-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 576px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.hero-stat {
  border-left: 2px solid color-mix(in oklab, var(--accent) 50%, transparent);
  padding-left: 1rem;
}

.animate-rise {
  animation: rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .animate-rise {
    animation: none;
  }
}

/* ---------- Hairline grids ---------- */
/* Cells sit on a Bootstrap .row.g-0 and draw 1px right/bottom borders; the
   wrapper clips the outer edges so only the inner dividers show. */
.hairline-grid {
  overflow: hidden;
  border-radius: calc(var(--radius) + 4px);
}

.hairline-grid > .row {
  margin: 0 -1px -1px 0;
}

.hairline-grid > .row > * {
  border-right: 1px solid var(--hairline-color, var(--border));
  border-bottom: 1px solid var(--hairline-color, var(--border));
}

.hairline-grid.is-bordered {
  border: 1px solid var(--border);
}

.hairline-grid.is-top-ruled {
  border-top: 1px solid var(--foam-line);
}

.hairline-grid.on-dark {
  --hairline-color: var(--foam-line);
}

.tile-dark {
  background-color: var(--hull);
  transition: background-color 0.15s;
}

.tile-dark:hover {
  background-color: var(--deep);
}

/* ---------- Cards & callouts ---------- */
.card-marine {
  --bs-card-border-color: var(--border);
  --bs-card-border-radius: var(--radius);
  --bs-card-bg: var(--card);
  --bs-card-spacer-x: 1.75rem;
  --bs-card-spacer-y: 1.75rem;
  box-shadow: var(--shadow-card);
}

.floating-stat {
  position: absolute;
  bottom: -1.5rem;
  left: 1.5rem;
  max-width: 20rem;
  --bs-card-spacer-x: 1.25rem;
  --bs-card-spacer-y: 1.25rem;
}

@media (min-width: 992px) {
  .floating-stat {
    left: -2.5rem;
  }
}

.rule-wave {
  width: 3.5rem;
  height: 2px;
  background-image: linear-gradient(90deg, color-mix(in oklab, var(--accent) 60%, transparent), transparent);
}

.rounded-2xl {
  border-radius: calc(var(--radius) + 8px) !important;
}

.rounded-xl {
  border-radius: calc(var(--radius) + 4px) !important;
}

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

.callout-danger {
  border: 1px solid color-mix(in oklab, var(--destructive) 25%, transparent);
  background-color: color-mix(in oklab, var(--destructive) 5%, transparent);
  border-radius: calc(var(--radius) + 4px);
  padding: 1.5rem;
}

/* ---------- Survey list ---------- */
.survey-list {
  list-style: none;
  padding: 0;
  border-block: 1px solid var(--border);
}

.survey-list > li {
  display: flex;
  gap: 1rem;
  padding-block: 1.25rem;
}

.survey-list > li + li {
  border-top: 1px solid var(--border);
}

/* ---------- Comparison table ---------- */
.compare-table {
  width: 100%;
  min-width: 560px;
  border-collapse: separate;
  border-spacing: 0;
  text-align: left;
}

.compare-table th {
  padding-bottom: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.compare-table td {
  padding-block: 1rem;
  border-top: 1px solid var(--border);
}

.compare-table .col-highlight {
  border-top: 0;
  background-color: color-mix(in oklab, var(--primary) 5%, transparent);
}

.compare-table th.col-highlight {
  padding: 1rem;
  background-color: var(--primary);
  color: var(--primary-foreground);
  border-radius: var(--radius) var(--radius) 0 0;
}

.compare-table tbody tr:last-child .col-highlight {
  border-radius: 0 0 var(--radius) var(--radius);
}

/* ---------- Chips ---------- */
.chip {
  border: 1px solid color-mix(in oklab, var(--surf-foam) 18%, transparent);
  border-radius: 50rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  color: color-mix(in oklab, var(--surf-foam) 75%, transparent);
}

/* ---------- FAQ accordion ---------- */
.faq {
  --bs-accordion-bg: transparent;
  --bs-accordion-color: var(--foreground);
  --bs-accordion-border-color: var(--border);
  --bs-accordion-btn-padding-x: 0;
  --bs-accordion-btn-padding-y: 1rem;
  --bs-accordion-btn-color: var(--foreground);
  --bs-accordion-btn-bg: transparent;
  --bs-accordion-active-color: var(--foreground);
  --bs-accordion-active-bg: transparent;
  --bs-accordion-btn-focus-box-shadow: none;
  --bs-accordion-btn-icon-width: 1rem;
  --bs-accordion-body-padding-x: 0;
  --bs-accordion-body-padding-y: 0;
  --bs-accordion-btn-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235d706e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpath d='m6 9 6 6 6-6'/%3e%3c/svg%3e");
  --bs-accordion-btn-active-icon: var(--bs-accordion-btn-icon);
}

.faq .accordion-button:not(.collapsed) {
  box-shadow: none;
}

.faq .accordion-item:last-child {
  border-bottom: var(--bs-accordion-border-width) solid var(--bs-accordion-border-color);
}

.faq .accordion-button {
  font-weight: 600;
  font-size: 1rem;
}

.faq .accordion-button:hover {
  text-decoration: underline;
}

.faq .accordion-button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.faq .accordion-body {
  padding-bottom: 1rem;
  font-size: 0.875rem;
  line-height: 1.625;
  color: var(--muted-foreground);
}

/* ---------- Contact ---------- */
.contact-links a:hover,
.contact-links a:focus {
  text-decoration: underline;
}

/* ---------- Footer ---------- */
.footer-logo {
  height: 5rem;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.footer-link {
  font-size: 0.875rem;
  color: color-mix(in oklab, var(--surf-foam) 60%, transparent);
  transition: color 0.15s;
}

.footer-link:hover {
  color: var(--surf-foam);
}

.footer-bottom {
  border-top: 1px solid color-mix(in oklab, var(--surf-foam) 12%, transparent);
}

/* ---------- Demo panel ---------- */
.demo-panel {
  padding: 2.5rem 1.5rem;
}

@media (min-width: 576px) {
  .demo-panel {
    padding: 2.5rem;
  }
}

@media (min-width: 992px) {
  .demo-panel {
    padding: 4rem;
  }
}