/* ─── Google Fonts ─────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..700;1,9..144,300..700&display=swap');

/* ─── Design tokens ────────────────────────────────────────────────────────── */
:root {
  color-scheme: light dark;

  /* Surface */
  --spillSurface:        #fafbfc;
  --spillSurfaceRaised:  #ffffff;
  --spillFoam:           #edf3f7;
  --spillStill:          #d8e1e8;
  --spillInk:            #0e1620;
  --spillInkMuted:       #4b5763;
  --spillInkFaint:       #8795a2;
  --spillDeep:           #0c3d62;
  --spillCurrent:        #2e77a8;
  --spillEbb:            #8f4a4a;
  --spillBorder:         rgba(216, 225, 232, 0.72);
  --spillFocus:          rgba(12, 61, 98, 0.82);
  --spillGlow:           0 0 64px rgba(46, 119, 168, 0.14);

  /* Typography */
  --font-display: "Fraunces", "Iowan Old Style", "Apple Garamond", Georgia, serif;
  --font-sans:    "SF Pro Text", -apple-system, BlinkMacSystemFont, "Inter Tight", sans-serif;
  --font-mono:    "SF Mono", "SFMono-Regular", ui-monospace, Menlo, monospace;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 2rem;
  --space-8: 3rem;
  --space-9: 4.5rem;

  /* Radii */
  --radius-chip:    0.375rem;
  --radius-control: 0.625rem;
  --radius-panel:   0.875rem;
  --radius-card:    1.25rem;
  --radius-pill:    999px;

  /* Shadows */
  --shadow-soft:  0 28px 80px rgba(12, 61, 98, 0.06);
  --shadow-panel: 0 18px 40px rgba(12, 61, 98, 0.08);

  /* Layout */
  --container:        min(76rem, calc(100vw - 2rem));
  --container-narrow: min(56rem, calc(100vw - 2rem));

  /* Motion */
  --ease-spill: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur-xs:     120ms;
  --dur-sm:     220ms;
  --dur-md:     480ms;
  --dur-lg:     900ms;
  --transition: var(--dur-sm) var(--ease-spill);
}

@media (prefers-color-scheme: dark) {
  :root {
    --spillSurface:       #090c0f;
    --spillSurfaceRaised: #111620;
    --spillFoam:          #171e28;
    --spillStill:         #1f2a36;
    --spillInk:           #eef2f6;
    --spillInkMuted:      #8e99a4;
    --spillInkFaint:      #5a6572;
    --spillDeep:          #6fb2dd;
    --spillCurrent:       #4e9ed0;
    --spillEbb:           #c08a8a;
    --spillBorder:        rgba(31, 42, 54, 0.9);
    --spillFocus:         rgba(111, 178, 221, 0.78);
    --spillGlow:          0 0 80px rgba(78, 158, 208, 0.18);
    --shadow-soft:        0 28px 80px rgba(0, 0, 0, 0.4);
    --shadow-panel:       0 18px 44px rgba(0, 0, 0, 0.5);
  }
}

/* ─── Motion keyframes ──────────────────────────────────────────────────────── */
@keyframes spill-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes rise-in {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Reset ─────────────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--spillInk);
  background: var(--spillSurface);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}


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

a {
  color: var(--spillDeep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

button, a.button { cursor: pointer; }

::selection { background: rgba(46, 119, 168, 0.18); }

/* ─── Skip link ──────────────────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  z-index: 1000;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-control);
  background: var(--spillSurfaceRaised);
  color: var(--spillInk);
  transform: translateY(-160%);
  transition: transform var(--transition);
}
.skip-link:focus { transform: translateY(0); }

:focus-visible {
  outline: 2px solid var(--spillFocus);
  outline-offset: 3px;
}

/* ─── Shell ──────────────────────────────────────────────────────────────────── */
.site-shell {
  position: relative;
  overflow: clip;
}

/* ─── Header / nav ──────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(20px) saturate(160%);
  background: color-mix(in srgb, var(--spillSurface) 82%, transparent);
  border-bottom: 1px solid rgba(216, 225, 232, 0.28);
}

@media (prefers-color-scheme: dark) {
  .site-header {
    border-bottom-color: rgba(31, 42, 54, 0.56);
  }
}

.nav {
  width: var(--container);
  margin: 0 auto;
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.72rem;
  box-shadow: inset 0 0 0 1px rgba(216, 225, 232, 0.56);
  background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(237,243,247,0.88));
  padding: 0.38rem;
}

@media (prefers-color-scheme: dark) {
  .brand-mark {
    box-shadow: inset 0 0 0 1px rgba(31, 42, 54, 0.78);
    background: linear-gradient(180deg, rgba(17, 22, 32, 0.92), rgba(23, 30, 40, 0.92));
  }
}

.nav-links,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.3rem;
  align-items: center;
}

.nav-links a,
.footer-links a {
  color: var(--spillInkMuted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-links a:hover,
.footer-links a:hover {
  color: var(--spillInk);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  border-radius: var(--radius-pill);
  background: var(--spillDeep);
  color: #fff !important;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(12, 61, 98, 0.22);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

@media (prefers-color-scheme: dark) {
  .nav-cta { color: #06121e !important; }
}

.nav-cta:hover {
  transform: translateY(-1px);
  background: var(--spillCurrent);
  box-shadow: 0 14px 28px rgba(46, 119, 168, 0.26);
}

/* ─── Buttons ────────────────────────────────────────────────────────────────── */
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.button-primary,
.button-secondary,
.button-tertiary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 3rem;
  padding: 0.9rem 1.3rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: -0.01em;
  text-decoration: none;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background var(--transition),
    border-color var(--transition),
    color var(--transition);
}

.button-primary {
  color: #fff;
  background: var(--spillDeep);
  box-shadow: 0 10px 28px rgba(12, 61, 98, 0.2);
}

@media (prefers-color-scheme: dark) {
  .button-primary { color: #06121e; }
}

.button-primary:hover {
  transform: translateY(-1px);
  background: var(--spillCurrent);
  box-shadow: 0 16px 36px rgba(46, 119, 168, 0.28), var(--spillGlow);
  color: #fff;
}

.button-secondary,
.button-tertiary {
  color: var(--spillInk);
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid var(--spillBorder);
}

@media (prefers-color-scheme: dark) {
  .button-secondary,
  .button-tertiary {
    background: rgba(17, 22, 32, 0.58);
  }
}

.button-secondary:hover,
.button-tertiary:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--spillCurrent) 48%, var(--spillBorder));
  background: color-mix(in srgb, var(--spillFoam) 72%, transparent);
  color: var(--spillInk);
}

.button-tertiary {
  border-radius: var(--radius-control);
}

/* ─── Page main ─────────────────────────────────────────────────────────────── */
.page-main {
  width: var(--container);
  margin: 0 auto;
}

/* ─── Hero ───────────────────────────────────────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: var(--space-8);
  padding: clamp(3rem, 7vw, 6rem) 0 var(--space-9);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.78rem;
  font-family: var(--font-sans);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--spillInkMuted);

  animation: spill-in var(--dur-md) var(--ease-spill) both;
}

.hero h1 {
  margin: 0.9rem 0 1.2rem;
  max-width: 13ch;
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.2rem);
  font-weight: 400;
  line-height: 0.96;
  letter-spacing: -0.03em;
  text-wrap: balance;
  font-optical-sizing: auto;

  animation: spill-in var(--dur-md) var(--ease-spill) both;
}

.lede,
.section-intro,
.utility-lede {
  max-width: 38rem;
  font-size: 1.08rem;
  color: var(--spillInkMuted);
}

.hero .lede {
  animation: spill-in var(--dur-md) var(--ease-spill) both;
  animation-delay: 120ms;
}

.hero .button-row {
  animation: spill-in var(--dur-md) var(--ease-spill) both;
  animation-delay: 120ms;
}

.download-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  margin-top: var(--space-3);
  color: var(--spillInkMuted);
  font-size: 0.9rem;

  animation: spill-in var(--dur-md) var(--ease-spill) both;
  animation-delay: 120ms;
}

/* ─── Pills & chips ──────────────────────────────────────────────────────────── */
.pill,
.version-chip,
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 1.9rem;
  padding: 0.3rem 0.68rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--spillBorder);
  color: var(--spillInkMuted);
  font-size: 0.86rem;
}

@media (prefers-color-scheme: dark) {
  .pill,
  .version-chip,
  .tag {
    background: rgba(17, 22, 32, 0.8);
  }
}

.version-chip {
  color: var(--spillDeep);
  border-color: color-mix(in srgb, var(--spillCurrent) 38%, var(--spillBorder));
}

/* ─── Hero stage ─────────────────────────────────────────────────────────────── */
.hero-stage {
  display: flex;
  align-items: flex-start;
  justify-content: center;

  animation: spill-in var(--dur-md) var(--ease-spill) both;
  animation-delay: 200ms;
}

.hero-card {
  width: min(100%, 28rem);
  border-radius: 1.5rem;
  overflow: hidden;
  border: 1px solid rgba(216, 225, 232, 0.72);
  box-shadow: var(--shadow-panel);
}

@media (prefers-color-scheme: dark) {
  .hero-card {
    border-color: rgba(31, 42, 54, 0.9);
  }
}

/* ─── Sections ───────────────────────────────────────────────────────────────── */
.section {
  padding: var(--space-9) 0;
}

@supports (animation-timeline: view()) {
  .section {
    animation: rise-in linear both;
    animation-timeline: view();
    animation-range: entry 8% cover 28%;
  }
}

.section-head {
  display: grid;
  gap: var(--space-3);
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.section-kicker {
  font-size: 0.78rem;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--spillInkFaint);
}

.section h2,
.utility-shell h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.9rem);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: -0.025em;
  text-wrap: balance;
  font-optical-sizing: auto;
}

/* ─── Cards (shared) ─────────────────────────────────────────────────────────── */
.step-card,
.feature-card,
.trust-card,
.utility-card,
.cta-panel,
.faq-item {
  background: color-mix(in srgb, var(--spillSurfaceRaised) 94%, transparent);
  border: 1px solid var(--spillBorder);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}

.step-card,
.feature-card,
.trust-card,
.utility-card,
.cta-panel {
  padding: 1.5rem;
}

.step-card strong,
.feature-card strong,
.trust-card strong,
.utility-card strong {
  display: block;
  margin-bottom: 0.55rem;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.feature-card p,
.step-card p,
.trust-card p,
.utility-card p,
.cta-panel p,
.faq-item p,
.footer-note,
.meta-list,
.list-note {
  margin: 0;
  color: var(--spillInkMuted);
}

/* ─── How it works ───────────────────────────────────────────────────────────── */
.step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--spillDeep);
  background: color-mix(in srgb, var(--spillFoam) 88%, transparent);
  border: 1px solid rgba(46, 119, 168, 0.16);
}

.step-card:hover .step-number {
  background: color-mix(in srgb, var(--spillCurrent) 12%, var(--spillFoam));
  border-color: rgba(46, 119, 168, 0.32);
  transition: background var(--transition), border-color var(--transition);
}

/* ─── Features bento ─────────────────────────────────────────────────────────── */
.feature-bento {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--space-4);
}

.feature-card {
  transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--spillSurfaceRaised) 98%, var(--spillFoam));
}

.feature-card--wide   { grid-column: span 4; }
.feature-card--narrow { grid-column: span 2; }

.feature-card--wide .feature-icon {
  margin-bottom: var(--space-4);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.65rem;
  background: color-mix(in srgb, var(--spillFoam) 80%, transparent);
  border: 1px solid rgba(46, 119, 168, 0.14);
  margin-bottom: 0.9rem;
  color: var(--spillDeep);
}

.feature-icon svg {
  width: 1.2rem;
  height: 1.2rem;
}

/* ─── Trust section ──────────────────────────────────────────────────────────── */
.trust-list li span,
.footer-note span {
  color: var(--spillInkFaint);
}

.trust-list,
.meta-list,
.faq-list,
.utility-list {
  display: grid;
  gap: 0.95rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.trust-list li,
.utility-list li {
  display: grid;
  gap: 0.28rem;
  padding-bottom: 0.95rem;
  border-bottom: 1px solid rgba(216, 225, 232, 0.52);
}

.trust-list li:last-child,
.utility-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

@media (prefers-color-scheme: dark) {
  .trust-list li,
  .utility-list li {
    border-bottom-color: rgba(31, 42, 54, 0.7);
  }
}

.meta-list { gap: 0.7rem; }

.meta-list code {
  font-family: var(--font-mono);
  font-size: 0.86rem;
}

/* ─── FAQ ────────────────────────────────────────────────────────────────────── */
.faq-list {
  gap: var(--space-3);
  max-width: 48rem;
}

.faq-item {
  padding: 0;
  overflow: clip;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1.1rem 1.3rem;
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  transition: background var(--transition);
}

.faq-item summary::after {
  content: "";
  flex-shrink: 0;
  width: 1.1rem;
  height: 1.1rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%238795a2' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  transition: transform var(--transition);
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

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

.faq-item summary:hover {
  background: color-mix(in srgb, var(--spillFoam) 30%, transparent);
}

.faq-item[open] summary {
  border-bottom: 1px solid rgba(216, 225, 232, 0.52);
}

@media (prefers-color-scheme: dark) {
  .faq-item[open] summary {
    border-bottom-color: rgba(31, 42, 54, 0.7);
  }
}

.faq-item p {
  padding: 1rem 1.3rem 1.2rem;
}

/* ─── CTA section ────────────────────────────────────────────────────────────── */
.cta-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-4);
  align-items: center;
}

.cta-panel {
  display: grid;
  gap: var(--space-4);
  box-shadow: var(--shadow-soft);
}

.cta-panel .button-primary {
  width: 100%;
  justify-content: center;
}

.release-link {
  font-size: 0.88rem;
  color: var(--spillInkFaint);
  text-decoration: none;
  display: block;
  text-align: center;
  margin-top: calc(var(--space-3) * -0.5);
}
.release-link:hover { color: var(--spillInkMuted); }

/* ─── Footer ─────────────────────────────────────────────────────────────────── */
.site-footer {
  width: var(--container);
  margin: 0 auto;
  padding: var(--space-7) 0 var(--space-8);
  border-top: 1px solid rgba(216, 225, 232, 0.44);
  display: grid;
  gap: var(--space-4);
}

@media (prefers-color-scheme: dark) {
  .site-footer {
    border-top-color: rgba(31, 42, 54, 0.6);
  }
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  align-items: start;
}

.footer-note {
  max-width: 36rem;
  font-size: 0.94rem;
  color: var(--spillInkMuted);
}

/* ─── Utility pages ──────────────────────────────────────────────────────────── */
.utility-main {
  width: var(--container-narrow);
  margin: 0 auto;
  padding: clamp(3rem, 10vw, 6rem) 0;
}

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

.utility-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.utility-card code,
.footer-note code {
  font-family: var(--font-mono);
}

.microcopy {
  font-size: 0.88rem;
  color: var(--spillInkFaint);
}

.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.2rem;
  font-size: 0.94rem;
}

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

/* ─── Redirect stubs ─────────────────────────────────────────────────────────── */
.redirect-shell {
  width: var(--container-narrow);
  margin: 0 auto;
  padding: clamp(4rem, 12vw, 8rem) 0;
  display: grid;
  gap: var(--space-6);
  text-align: center;
}

.redirect-shell h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.025em;
  margin: 0;
}

.redirect-shell p { color: var(--spillInkMuted); }

/* ─── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 72rem) {
  .hero,
  .trust-grid,
  .cta-layout {
    grid-template-columns: 1fr;
  }

  .hero h1 { max-width: 14ch; }

  .hero-stage { min-height: 28rem; }

  .feature-card--wide   { grid-column: span 6; }
  .feature-card--narrow { grid-column: span 3; }
}

@media (max-width: 54rem) {
  .nav {
    padding: 0.85rem 0;
    align-items: start;
    flex-direction: column;
  }
  .nav-links { gap: 0.7rem 1rem; }
  .hero { padding-top: 2.5rem; }

  .step-grid,
  .feature-bento,
  .utility-grid {
    grid-template-columns: 1fr;
  }

  .feature-card--wide,
  .feature-card--narrow { grid-column: span 1; }

  .footer-top { flex-direction: column; }
}

@media (max-width: 36rem) {
  .page-main,
  .site-footer,
  .nav,
  .utility-main {
    width: min(calc(100vw - 1.25rem), 100%);
  }

  .hero h1 { font-size: clamp(2.6rem, 14vw, 3.4rem); }

  .button-primary,
  .button-secondary,
  .button-tertiary,
  .nav-cta {
    width: 100%;
    justify-content: center;
  }

  .button-row { align-items: stretch; }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}