/* ==========================================================================
   Fonts (self-hosted, variable)
   ========================================================================== */

@font-face {
  font-family: 'Fraunces';
  src: url('/assets/fonts/Fraunces-Variable.woff2') format('woff2-variations'),
       url('/assets/fonts/Fraunces-Variable.woff2') format('woff2');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/Inter-Variable.woff2') format('woff2-variations'),
       url('/assets/fonts/Inter-Variable.woff2') format('woff2');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

/* ==========================================================================
   Reset
   ========================================================================== */

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

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

/* ==========================================================================
   Design Tokens
   ========================================================================== */

:root {
  /* Typography */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --text-xs: 0.875rem;
  --text-sm: 1rem;
  --text-md: 1.25rem;
  --text-lg: 1.75rem;
  --text-xl: 2.5rem;
  --text-2xl: 4rem;

  /* Spacing scale: 4/8/16/24/32/48/64/96 */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;
  --space-8: 6rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;

  --shadow-sm: 0 1px 2px rgba(28, 28, 26, 0.05), 0 1px 1px rgba(28, 28, 26, 0.04);
  --shadow-md: 0 8px 24px -8px rgba(28, 28, 26, 0.14), 0 2px 8px -2px rgba(28, 28, 26, 0.06);
  --shadow-lg: 0 20px 48px -16px rgba(28, 28, 26, 0.18), 0 4px 12px -4px rgba(28, 28, 26, 0.08);

  --max-width: 1200px;
  --max-width-sm: 640px;

  /* ---- Shared light theme (every page: hub, about, contact, all 3 apps) ---- */
  --bg: #FFFFFF;
  --surface: #F5F4F0;
  --border: #E2E0D8;
  --text: #1C1C1A;
  --text-secondary: #5C5C56;

  /* ---- Per-app accent (only the accent changes between pages) ----
     Each accent has two variants:
     - the brand hex, used for buttons, icons, large headings, borders (large-text/UI contrast, 3:1+)
     - a -text variant, darkened to clear 4.5:1 on white for body copy and links */
  --neutral-accent: #5B4B8A;
  --neutral-accent-text: #453869;

  --vitae-accent: #285B67;
  --vitae-accent-text: #285B67;
  --vitae-tint: #EAF1F1;
  --vitae-tint-border: #C7DEDE;

  --travel-accent: #007AFF;
  --travel-accent-text: #006DE5;
  --travel-tint: #E5F1FF;
  --travel-tint-border: #C7E0FF;

  --forma-accent: #F91919;
  --forma-accent-text: #E01616;
  --forma-tint: #FDEAEA;
  --forma-tint-border: #F9C9C9;

  /* Active accent (defaults to neutral, overridden per page via [data-theme]) */
  --accent: var(--neutral-accent);
  --accent-text: var(--neutral-accent-text);
}

[data-theme="vitae"] {
  --accent: var(--vitae-accent);
  --accent-text: var(--vitae-accent-text);
}

[data-theme="travel"] {
  --accent: var(--travel-accent);
  --accent-text: var(--travel-accent-text);
}

[data-theme="forma"] {
  --accent: var(--forma-accent);
  --accent-text: var(--forma-accent-text);
}

/* ==========================================================================
   Base
   ========================================================================== */

html {
  scroll-behavior: smooth;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-3);
}

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

p {
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
  max-width: 65ch;
}

a {
  color: var(--accent-text);
  text-decoration: none;
  transition: opacity var(--duration-fast) var(--ease), color var(--duration-fast) var(--ease);
}

a:hover {
  opacity: 0.75;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

.container-sm {
  max-width: var(--max-width-sm);
  margin: 0 auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

section {
  padding: var(--space-7) 0;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

header {
  background-color: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--duration-base) var(--ease), border-color var(--duration-base) var(--ease);
}

nav.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-5);
  max-width: var(--max-width);
  margin: 0 auto;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--text);
}

.logo-mark {
  flex-shrink: 0;
  display: block;
}

.logo-mark rect {
  transition: transform var(--duration-base) var(--ease);
  transform-origin: bottom;
}

.logo:hover .logo-mark rect {
  transform: scaleY(1.12);
}

.nav-links {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: var(--text-xs);
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background-color: var(--accent);
  transition: width var(--duration-base) var(--ease);
}

.nav-links a:hover {
  color: var(--text);
  opacity: 1;
}

.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after {
  width: 100%;
}

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

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding: var(--space-8) 0 var(--space-7);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -30%;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, var(--accent) 0%, transparent 70%);
  opacity: 0.08;
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero h1 {
  margin-bottom: var(--space-4);
}

.hero .lede {
  font-size: var(--text-md);
  max-width: 42ch;
  margin: 0 auto var(--space-6);
  color: var(--text-secondary);
}

.app-icon-badge {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  box-shadow: var(--shadow-md);
  margin: 0 auto var(--space-4);
}

/* ==========================================================================
   Grid & Cards
   ========================================================================== */

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-base) var(--ease), border-color var(--duration-base) var(--ease), box-shadow var(--duration-base) var(--ease);
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

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

.card p {
  margin-bottom: 0;
  font-size: var(--text-xs);
}

/* ==========================================================================
   Screenshot gallery (app detail pages)
   ========================================================================== */

.screenshot-gallery {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: var(--space-1) var(--space-1) var(--space-3);
  -webkit-overflow-scrolling: touch;
}

.screenshot-gallery img {
  flex: 0 0 200px;
  scroll-snap-align: start;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-base) var(--ease), box-shadow var(--duration-base) var(--ease);
}

.screenshot-gallery img:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

@media (min-width: 769px) {
  .screenshot-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    overflow-x: visible;
    padding: 0;
  }

  .screenshot-gallery img {
    flex: initial;
    width: 100%;
    height: auto;
  }
}

/* App card on hub: background and border follow the app's own theme tokens,
   independent of the page's active (neutral) theme */
.app-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  border: 1px solid;
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-base) var(--ease), box-shadow var(--duration-base) var(--ease);
}

.app-card:hover {
  transform: translateY(-4px);
  opacity: 1;
  box-shadow: var(--shadow-lg);
}

.app-card[data-theme="vitae"] {
  background-color: var(--vitae-tint);
  border-color: var(--vitae-tint-border);
}
.app-card[data-theme="vitae"] .app-card-icon { color: var(--vitae-accent); }

.app-card[data-theme="travel"] {
  background-color: var(--travel-tint);
  border-color: var(--travel-tint-border);
}
.app-card[data-theme="travel"] .app-card-icon { color: var(--travel-accent); }

.app-card[data-theme="forma"] {
  background-color: var(--forma-tint);
  border-color: var(--forma-tint-border);
}
.app-card[data-theme="forma"] .app-card-icon { color: var(--forma-accent); }

.app-card h2,
.app-card .app-tagline,
.app-card p {
  color: var(--text);
}
.app-card .app-tagline,
.app-card p {
  color: var(--text-secondary);
}

.app-card-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-4);
}

.app-card-icon.is-real {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.app-card .app-tagline {
  font-size: var(--text-xs);
  margin-bottom: var(--space-3);
}

/* ==========================================================================
   Buttons / CTA
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease), opacity var(--duration-fast) var(--ease), background-color var(--duration-fast) var(--ease), box-shadow var(--duration-fast) var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
  opacity: 1;
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--accent-text);
  color: #FFFFFF;
  box-shadow: var(--shadow-sm);
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--text);
  border-color: var(--border);
}

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

/* ==========================================================================
   App Detail Header
   ========================================================================== */

.app-header {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
  flex-wrap: wrap;
}

.app-header-content h1 {
  margin-bottom: var(--space-2);
}

.app-header-content .tagline {
  font-size: var(--text-md);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  max-width: 50ch;
}

.app-meta {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-5);
}

.app-meta.is-centered {
  justify-content: center;
}

.meta-tag {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.meta-tag.is-accent {
  border-color: var(--accent);
  color: var(--accent-text);
}

/* ==========================================================================
   How It Works / Steps
   ========================================================================== */

.how-it-works {
  margin-top: var(--space-7);
}

.steps {
  display: grid;
  gap: var(--space-6);
  counter-reset: step;
  margin-top: var(--space-5);
}

.step {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
}

.step-marker {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  background-color: var(--surface);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--accent-text);
}

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

.step-content p {
  margin-bottom: 0;
  font-size: var(--text-xs);
}

/* ==========================================================================
   Feature list
   ========================================================================== */

.feature-list {
  list-style: none;
  display: grid;
  gap: var(--space-3);
}

.feature-list li {
  padding-left: var(--space-4);
  position: relative;
  color: var(--text-secondary);
  font-size: var(--text-xs);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent);
}

.feature-list strong {
  color: var(--text);
}

/* ==========================================================================
   Manifesto (hub "why these apps" section)
   ========================================================================== */

.manifesto {
  text-align: center;
  padding: var(--space-8) 0;
}

.manifesto-line {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, var(--text-xl));
  line-height: 1.4;
  max-width: 20ch;
  margin: 0 auto;
}

.manifesto-line em {
  font-style: normal;
  color: var(--accent-text);
}

.manifesto-rule {
  width: 48px;
  height: 1px;
  background-color: var(--border);
  margin: var(--space-5) auto;
}

.manifesto-note {
  color: var(--text-secondary);
  font-size: var(--text-xs);
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}

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

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

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--space-7) 0 var(--space-5);
  margin-top: var(--space-7);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.footer-section h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-3);
  color: var(--text-secondary);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--space-2);
}

.footer-section a {
  color: var(--text-secondary);
  font-size: var(--text-xs);
}

.footer-section a:hover {
  color: var(--text);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-5) var(--space-5) 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

.footer-bottom p {
  margin-bottom: 0;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-5);
}

label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 500;
  font-size: var(--text-xs);
}

input, textarea {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--text);
  background-color: var(--bg);
  transition: border-color var(--duration-fast) var(--ease);
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

/* ==========================================================================
   Accessibility utilities
   ========================================================================== */

.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent);
  color: var(--bg);
  padding: var(--space-2) var(--space-3);
  text-decoration: none;
  z-index: 200;
}

.skip-to-content:focus {
  top: 0;
}

.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;
}

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

.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.stack-6 { display: grid; gap: var(--space-6); margin-top: var(--space-6); }

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq-list {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  background-color: var(--surface);
}

.faq-item summary {
  font-family: var(--font-display);
  font-size: var(--text-md);
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before {
  content: '+';
  display: inline-block;
  width: 1.25em;
  color: var(--accent-text);
  transition: transform var(--duration-fast) var(--ease);
}

.faq-item[open] summary::before {
  transform: rotate(45deg);
}

.faq-item p {
  margin-top: var(--space-3);
  margin-bottom: 0;
  color: var(--text-secondary);
}

@media (prefers-reduced-motion: reduce) {
  .faq-item summary::before {
    transition: none;
  }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
  section {
    padding: var(--space-6) 0;
  }

  nav.main-nav {
    padding: var(--space-3) var(--space-4);
  }

  .app-header {
    gap: var(--space-4);
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media print {
  header, footer, .btn {
    display: none;
  }
}