/* Custom styles + semantic component classes (design tokens match Tailwind config) */

:root {
  --site-max: 1120px;
  --ink: #0b1220;
  --blue: #0a84ff;
  --blue-dark: #007aff;
  --shadow-card: 0 10px 30px rgba(2, 8, 23, 0.1);
  --shadow-panel: 0 18px 50px rgba(2, 8, 23, 0.12);
  --radius-2xl: 18px;
  --radius-3xl: 26px;
}

* {
  box-sizing: border-box;
}

/* Layout */
.site-container {
  max-width: var(--site-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}
@media (min-width: 768px) {
  .site-container { padding-left: 1.5rem; padding-right: 1.5rem; }
}

/* Page hero (inner pages) */
.page-hero {
  padding-top: 5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}
@media (min-width: 768px) {
  .page-hero { padding-top: 80px; padding-bottom: 1.75rem; }
}
.page-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 0.625rem 0;
  letter-spacing: -0.02em;
}
@media (min-width: 768px) { .page-title { font-size: 2.25rem; } }
@media (min-width: 1024px) { .page-title { font-size: 3rem; } }
.page-lead {
  font-size: 1rem;
  color: rgba(11, 18, 32, 0.64);
  max-width: 72ch;
  line-height: 1.6;
  margin: 0;
}
@media (min-width: 768px) { .page-lead { font-size: 1.125rem; } }

/* Prose section (two-column content) */
.prose-section {
  padding-top: 2.75rem;
  padding-bottom: 2.75rem;
}
@media (min-width: 768px) { .prose-section { padding-top: 3.5rem; padding-bottom: 3.5rem; } }
@media (min-width: 1024px) { .prose-section { padding-top: 86px; padding-bottom: 86px; } }
.prose-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}
@media (min-width: 768px) {
  .prose-grid { grid-template-columns: 1fr 1fr; gap: 2.25rem; }
}
.prose-h2 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 2rem 0 0.625rem 0;
}
.prose-h2:first-child { margin-top: 0; }
@media (min-width: 768px) {
  .prose-h2 { font-size: 22px; margin-top: 2.25rem; }
}
.prose-p {
  font-size: 0.875rem;
  color: rgba(11, 18, 32, 0.72);
  line-height: 1.6;
  margin: 0 0 0.875rem 0;
}
.prose-p:last-child { margin-bottom: 0; }
@media (min-width: 768px) { .prose-p { font-size: 1rem; } }

/* Cards */
.card {
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-card);
  padding: 1.25rem;
}
.card-title {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 0.5rem 0;
}
.card-p, .card ul {
  font-size: 13.5px;
  color: rgba(11, 18, 32, 0.68);
  line-height: 1.6;
  margin: 0;
}
.card ul { padding-left: 1.25rem; }
.card ul li + li { margin-top: 0.25rem; }
.card-quote {
  border-radius: var(--radius-3xl);
  padding: 1.25rem;
  border: 1px solid rgba(10, 132, 255, 0.2);
  box-shadow: var(--shadow-card);
}
.card-quote p {
  font-size: 0.875rem;
  color: rgba(11, 18, 32, 0.74);
  line-height: 1.6;
  margin: 0;
}
@media (min-width: 768px) { .card-quote p { font-size: 14.5px; } }
.card-quote .quote-by {
  font-size: 0.75rem;
  color: rgba(11, 18, 32, 0.56);
  margin-top: 0.625rem;
}
@media (min-width: 768px) { .card-quote .quote-by { font-size: 12.5px; } }

/* Buttons */
.btn-group { margin-top: 1.25rem; display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.875rem;
  transition: box-shadow 0.2s;
}
.btn-primary {
  background: linear-gradient(180deg, var(--blue), var(--blue-dark));
  color: #fff;
  border: 1px solid rgba(10, 132, 255, 0.2);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
.btn-primary:hover { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1); }
.btn-secondary {
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
.btn-secondary:hover { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1); }

/* Footer */
.site-footer {
  padding-top: 3rem;
  padding-bottom: 3rem;
  padding-left: max(1.25rem, env(safe-area-inset-left));
  padding-right: max(1.25rem, env(safe-area-inset-right));
}
.site-footer p {
  margin: 0;
  font-size: 13px;
  color: rgba(11, 18, 32, 0.6);
}
.site-footer a { text-decoration: underline; }

/* Nav (shared) - keep Tailwind for responsive toggles; add semantic where it shortens */
.nav-link {
  padding: 0.5rem 0.625rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  color: rgba(11, 18, 32, 0.76);
}
.nav-link:hover { background: rgba(0, 0, 0, 0.05); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 0.875rem;
  border-radius: 9999px;
  border: 1px solid rgba(10, 132, 255, 0.2);
  background: rgba(10, 132, 255, 0.1);
  color: var(--blue-dark);
  font-weight: 600;
  font-size: 0.875rem;
}
.nav-cta:hover { background: rgba(10, 132, 255, 0.15); }
.card + .card { margin-top: 0.875rem; }

/* Home hero left card (index) */
.hero-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem;
  min-height: 320px;
  border-radius: var(--radius-3xl);
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--shadow-panel);
}
@media (min-width: 768px) { .hero-panel { padding: 1.75rem; } }
@media (min-width: 1024px) { .hero-panel { padding: 2rem; min-height: 480px; } }
.hero-title {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.04em;
  color: var(--ink);
  margin: 0 0 0.75rem 0;
}
@media (min-width: 768px) { .hero-title { font-size: 44px; } }
@media (min-width: 1024px) { .hero-title { font-size: 3rem; } }
@media (min-width: 1280px) { .hero-title { font-size: 62px; } }
.hero-lead {
  font-size: 1.125rem;
  color: rgba(11, 18, 32, 0.64);
  line-height: 1.6;
  max-width: 58ch;
  margin: 0 0 1rem 0;
}
.hero-tagline { font-size: 1.125rem; line-height: 1.4; color: rgba(11, 18, 32, 0.82); margin: 0.5rem 0; }
@media (min-width: 768px) { .hero-tagline { font-size: 17px; } }
.hero-links { margin-top: 1rem; display: flex; flex-wrap: wrap; gap: 0.875rem; font-size: 0.875rem; color: rgba(11, 18, 32, 0.72); }
.hero-links a { padding-bottom: 0.25rem; border-bottom: 1px solid transparent; }
.hero-links a:hover { border-bottom-color: rgba(11, 18, 32, 0.2); }

html {
  overflow-x: hidden;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Topbar: backdrop with saturation (Tailwind has blur but not saturate(180%)) */
.topbar-backdrop {
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
}

/* Home hero wrap gradient */
.home-hero-bg {
  background: linear-gradient(180deg, rgba(10, 132, 255, 0.06), rgba(255, 255, 255, 0.94) 44%, #fff);
}

/* Page hero multi-stop radial gradients */
.page-hero-bg {
  background:
    radial-gradient(1000px 520px at 50% 0%, rgba(10, 132, 255, 0.16), transparent 62%),
    radial-gradient(820px 520px at 10% 10%, rgba(99, 102, 241, 0.1), transparent 60%),
    radial-gradient(820px 520px at 90% 40%, rgba(20, 184, 166, 0.08), transparent 60%);
}

/* Canvas animation zone gradient overlay */
.canvas-zone-bg {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.06));
}

/* Narrative block under canvas */
.narrative-bg {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0.74));
}

/* Panel/card complex gradient (how-it-works etc.) */
.panel-bg {
  background:
    radial-gradient(1200px 420px at 20% 0%, rgba(10, 132, 255, 0.14), transparent 55%),
    radial-gradient(900px 420px at 90% 30%, rgba(99, 102, 241, 0.1), transparent 55%),
    rgba(255, 255, 255, 0.72);
}

/* Quote card gradient */
.quote-bg {
  background: linear-gradient(180deg, rgba(10, 132, 255, 0.1), rgba(255, 255, 255, 0.85));
}

/* Focus visible for a11y */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid rgba(10, 132, 255, 0.42);
  outline-offset: 2px;
}

/* Safe areas */
body {
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* Prevent iOS zoom on input focus */
@media (max-width: 768px) {
  input.input-mobile {
    font-size: 16px;
  }
}