/*
 * Lumen Desktop — project site.
 *
 * The colour tokens are the app's own (src/renderer/index.css), so the page and
 * the screenshots on it read as one product. As in the app, the accent is a
 * FILL and never a text colour: amber text on a light surface fails contrast.
 */

:root {
  color-scheme: light dark;

  --surface: oklch(97% 0.005 265);
  --surface-raised: oklch(100% 0 0);
  --line: oklch(91% 0.008 265);
  --ink: oklch(22% 0.02 265);
  --ink-muted: oklch(46% 0.02 265);
  --accent: oklch(70% 0.17 55);
  --accent-ink: oklch(20% 0.03 60);
  --violet: oklch(55% 0.22 300);
  --glow: oklch(70% 0.17 55 / 0.22);

  --radius-card: 1rem;
  --radius-row: 0.75rem;
  --shadow-card: 0 1px 2px oklch(0% 0 0 / 0.06), 0 1px 8px oklch(0% 0 0 / 0.04);
  --shadow-window: 0 24px 60px -18px oklch(25% 0.05 265 / 0.35), 0 2px 6px oklch(0% 0 0 / 0.08);
  --ease: cubic-bezier(0.2, 0, 0.2, 1);

  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --max: 72rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface: oklch(17% 0.012 265);
    --surface-raised: oklch(21% 0.014 265);
    --line: oklch(30% 0.015 265);
    --ink: oklch(95% 0.008 265);
    --ink-muted: oklch(74% 0.015 265);
    --accent: oklch(76% 0.16 65);
    --accent-ink: oklch(20% 0.03 60);
    --glow: oklch(76% 0.16 65 / 0.16);
    --shadow-card: 0 1px 2px oklch(0% 0 0 / 0.5);
    --shadow-window: 0 28px 70px -20px oklch(0% 0 0 / 0.75), 0 0 0 1px oklch(100% 0 0 / 0.06);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration-color: color-mix(in oklab, var(--ink-muted) 60%, transparent);
  text-underline-offset: 0.2em;
}
a:hover {
  text-decoration-color: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

code,
pre {
  font-family: var(--mono);
  font-size: 0.875em;
}
:not(pre) > code {
  padding: 0.1em 0.35em;
  border-radius: 0.35em;
  background: color-mix(in oklab, var(--line) 70%, transparent);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-row);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus {
  top: 1rem;
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* ---------------------------------------------------------------- header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  background: color-mix(in oklab, var(--surface) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  transition: border-color 200ms var(--ease);
}
.site-header[data-scrolled='true'] {
  border-bottom-color: var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.brand img {
  width: 2rem;
  height: 2rem;
}

.site-nav {
  display: none;
  gap: 0.25rem;
  margin-left: auto;
}
.site-nav a {
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  color: var(--ink-muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 150ms var(--ease), background 150ms var(--ease);
}
.site-nav a:hover {
  color: var(--ink);
  background: color-mix(in oklab, var(--line) 60%, transparent);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 150ms var(--ease);
}
.lang-switch:hover {
  background: color-mix(in oklab, var(--line) 50%, transparent);
}
.lang-switch span[aria-hidden] {
  color: var(--ink-muted);
  font-weight: 500;
}

@media (min-width: 60rem) {
  .site-nav {
    display: flex;
  }
  .site-nav + .lang-switch {
    margin-left: 0.5rem;
  }
}

/* ---------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.9rem;
  padding: 0 1.3rem;
  border: 1px solid transparent;
  border-radius: var(--radius-card);
  font-size: 0.975rem;
  font-weight: 600;
  text-decoration: none;
  transition: filter 150ms var(--ease), background 150ms var(--ease), transform 150ms var(--ease);
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 8px 24px -10px var(--accent);
}
.btn-primary:hover {
  filter: brightness(1.06);
}
.btn-secondary {
  border-color: var(--line);
  background: var(--surface-raised);
}
.btn-secondary:hover {
  background: color-mix(in oklab, var(--line) 45%, var(--surface-raised));
}
.btn svg {
  width: 1.1em;
  height: 1.1em;
  flex: none;
}

/* ---------------------------------------------------------------- hero */

.hero {
  position: relative;
  overflow: hidden;
  padding: 3.5rem 0 4rem;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -20% -10% auto;
  height: 48rem;
  z-index: -1;
  background:
    radial-gradient(40rem 26rem at 18% 30%, var(--glow), transparent 70%),
    radial-gradient(34rem 24rem at 88% 12%, oklch(55% 0.22 300 / 0.14), transparent 70%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  padding: 0.3rem 0.8rem 0.3rem 0.4rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-raised);
  color: var(--ink-muted);
  font-size: 0.8rem;
  font-weight: 600;
}
.eyebrow .dot {
  width: 0.45rem;
  height: 0.45rem;
  margin-left: 0.35rem;
  border-radius: 50%;
  background: oklch(68% 0.16 155);
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 750;
}
.hero h1 .accent-word {
  background: linear-gradient(100deg, oklch(66% 0.19 50), oklch(60% 0.22 350) 55%, var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
@media (prefers-color-scheme: dark) {
  .hero h1 .accent-word {
    background-image: linear-gradient(100deg, oklch(80% 0.15 65), oklch(72% 0.18 350) 55%, oklch(70% 0.18 300));
  }
}

.lede {
  max-width: 34rem;
  margin: 1.25rem 0 0;
  color: var(--ink-muted);
  font-size: 1.15rem;
  line-height: 1.55;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.fine-print {
  margin: 1rem 0 0;
  color: var(--ink-muted);
  font-size: 0.85rem;
}

.hero-shots {
  position: relative;
  display: flex;
  justify-content: center;
  padding-bottom: 1rem;
}
.hero-shots .window:first-child {
  width: min(78%, 21rem);
  transform: translateX(-12%);
}
.hero-shots .window + .window {
  position: absolute;
  width: min(62%, 17rem);
  right: 0;
  bottom: -1.5rem;
}

@media (min-width: 60rem) {
  .hero {
    padding: 5rem 0 6rem;
  }
  .hero .container {
    grid-template-columns: 1.1fr 1fr;
  }
  .hero-shots .window + .window {
    right: -1rem;
  }
}

/* An app window: the screenshot plus the macOS traffic lights the app draws
   itself (titleBarStyle: hiddenInset), which a browser capture cannot show. */
.window {
  display: block;
  container-type: inline-size;
  position: relative;
  overflow: hidden;
  border-radius: 3.2cqw;
  background: var(--surface-raised);
  box-shadow: var(--shadow-window);
  outline: 1px solid color-mix(in oklab, var(--line) 80%, transparent);
}
.window::before {
  content: '';
  position: absolute;
  top: 2.9cqw;
  left: 3.4cqw;
  width: 2.6cqw;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #ff5f57;
  box-shadow:
    4.3cqw 0 0 #febc2e,
    8.6cqw 0 0 #28c840;
  z-index: 1;
}
.window img {
  width: 100%;
}

/* ---------------------------------------------------------------- sections */

.section {
  padding: 4.5rem 0;
}
.section-alt {
  background: color-mix(in oklab, var(--surface-raised) 55%, var(--surface));
  border-block: 1px solid var(--line);
}

.section-head {
  max-width: 44rem;
  margin-bottom: 2.75rem;
}
.label {
  margin: 0 0 0.6rem;
  color: var(--ink-muted);
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.section h2 {
  margin: 0;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
}
.section-head p:not(.label) {
  margin: 1rem 0 0;
  color: var(--ink-muted);
  font-size: 1.075rem;
}

h3 {
  margin: 0 0 0.4rem;
  font-size: 1.125rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.card {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface-raised);
  box-shadow: var(--shadow-card);
}
.card p {
  margin: 0;
  color: var(--ink-muted);
}

.grid {
  display: grid;
  gap: 1rem;
}
@media (min-width: 44rem) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 60rem) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media (min-width: 44rem) and (max-width: 59.99rem) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.icon-badge {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 1rem;
  border-radius: 0.8rem;
  background: color-mix(in oklab, var(--accent) 18%, transparent);
  color: var(--ink);
}
.icon-badge svg {
  width: 1.3rem;
  height: 1.3rem;
}

/* ---------------------------------------------------------------- brands */

.brand-card .tag {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: color-mix(in oklab, var(--line) 70%, transparent);
  color: var(--ink-muted);
  font-size: 0.78rem;
  font-weight: 600;
}

/* ---------------------------------------------------------------- features */

.feature {
  display: grid;
  gap: 2rem;
  align-items: center;
  padding: 2.5rem 0;
}
.feature + .feature {
  border-top: 1px solid var(--line);
}
.feature .window {
  width: min(100%, 19rem);
  margin-inline: auto;
}
.feature-text p {
  margin: 0.75rem 0 0;
  color: var(--ink-muted);
  font-size: 1.05rem;
}
.feature-text h3 {
  font-size: clamp(1.35rem, 3vw, 1.65rem);
  letter-spacing: -0.02em;
}
.checks {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}
.checks li {
  position: relative;
  padding-left: 1.75rem;
}
.checks li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.4em;
  width: 1.05rem;
  height: 1.05rem;
  border-radius: 50%;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%23332211' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")
      center / 0.75rem no-repeat,
    var(--accent);
}

@media (min-width: 52rem) {
  .feature {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: 3.5rem 0;
  }
  .feature:nth-child(even) .feature-media {
    order: 2;
  }
}

.more-features {
  margin-top: 3rem;
}
.more-features .card {
  padding: 1.25rem;
}
.more-features h3 {
  font-size: 1rem;
}
.more-features p {
  font-size: 0.925rem;
}

/* ---------------------------------------------------------------- steps */

.steps {
  counter-reset: step;
  margin: 0;
  padding: 0;
  list-style: none;
}
.steps li {
  counter-increment: step;
  position: relative;
  padding-top: 3.25rem;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}
.steps p {
  margin: 0;
  color: var(--ink-muted);
}
.steps .window {
  width: min(100%, 15rem);
  margin-top: 1.25rem;
}

/* ---------------------------------------------------------------- gallery */

.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 44rem) {
  .gallery {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
}
.gallery button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: zoom-in;
  border-radius: var(--radius-card);
}
.gallery .window {
  transition: transform 200ms var(--ease), box-shadow 200ms var(--ease);
}
.gallery button:hover .window {
  transform: translateY(-3px);
}
.gallery figcaption {
  margin-top: 0.75rem;
  color: var(--ink-muted);
  font-size: 0.875rem;
  text-align: center;
}

.lightbox {
  width: min(100vw - 2rem, 34rem);
  max-height: calc(100dvh - 2rem);
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  overflow: visible;
}
.lightbox::backdrop {
  background: oklch(10% 0.01 265 / 0.78);
  backdrop-filter: blur(6px);
}
.lightbox figure {
  margin: 0;
  display: grid;
  justify-items: center;
  gap: 0.9rem;
}
.lightbox .window {
  /* A size container cannot shrink-wrap its image, so the width is derived
     from the height the viewport leaves and the screenshots' 920:1520 ratio. */
  width: min(100%, calc((100dvh - 9rem) * 920 / 1520));
}
.lightbox figcaption {
  color: oklch(95% 0.008 265);
  font-size: 0.95rem;
  text-align: center;
}
.lightbox-controls {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
}
.lightbox-controls button {
  min-width: 2.75rem;
  min-height: 2.75rem;
  padding: 0 0.9rem;
  border: 1px solid oklch(100% 0 0 / 0.2);
  border-radius: 999px;
  background: oklch(25% 0.015 265 / 0.9);
  color: oklch(97% 0 0);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}
.lightbox-controls button:hover {
  background: oklch(32% 0.015 265 / 0.95);
}

/* ---------------------------------------------------------------- privacy / limits */

.list-plain {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--ink-muted);
}
.list-plain li + li {
  margin-top: 0.5rem;
}
.list-plain strong {
  color: var(--ink);
}

/* ---------------------------------------------------------------- dev */

.dev-grid {
  display: grid;
  gap: 1.5rem;
}
/* Grid items default to min-width: auto, which lets the <pre> push the page
   wider than a phone instead of scrolling inside its own box. */
.dev-grid > * {
  min-width: 0;
}
@media (min-width: 52rem) {
  .dev-grid {
    grid-template-columns: 1fr 1.1fr;
  }
}
.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}
.stack li {
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-raised);
  font-size: 0.85rem;
  font-weight: 550;
}
pre {
  margin: 0;
  padding: 1.25rem;
  overflow-x: auto;
  border-radius: var(--radius-card);
  background: oklch(19% 0.014 265);
  color: oklch(93% 0.008 265);
  line-height: 1.7;
  border: 1px solid oklch(30% 0.015 265);
}
pre .c {
  color: oklch(70% 0.02 265);
}
.arch {
  margin-top: 1.25rem;
}

/* ---------------------------------------------------------------- final CTA */

.cta-band {
  padding: 4rem 0;
  text-align: center;
}
.cta-band .container {
  display: grid;
  justify-items: center;
}
.cta-band img {
  width: 5rem;
  height: 5rem;
  margin-bottom: 1.25rem;
}
.cta-band h2 {
  margin: 0;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
}
.cta-band p {
  max-width: 34rem;
  margin: 1rem auto 0;
  color: var(--ink-muted);
}
.cta-band .cta-row {
  justify-content: center;
}

/* ---------------------------------------------------------------- footer */

.site-footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.875rem;
}
.site-footer .container {
  display: grid;
  gap: 1.25rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-footer p {
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}