/* =========================================================================
   ClipHistory landing page
   Swiss baseline grid. Helvetica. Black on white, inverts in dark mode.
   Grid unit: 8px. Body: 16 / 24 (3u leading).
   Adapted from the Markset landing page.
   ========================================================================= */

:root {
  --bg: #ffffff;
  --fg: #000000;
  --grid: 8px;
  --gutter: 32px;
  --max-w: 1280px;
  --hairline: 1px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --fg: #ffffff;
  }
}

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

/* Browsers style [hidden] as display:none in the UA sheet without
   !important, so any class that sets its own display (e.g. flex)
   overrides it. This is the canonical defensive fix. */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Helvetica Neue', Helvetica, 'Arial', sans-serif;
  font-size: 16px;
  line-height: 24px;  /* 3 grid units */
  font-weight: 400;
  font-feature-settings: 'kern';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

a:hover { text-decoration-thickness: 2px; }

code, kbd {
  font-family: 'Menlo', ui-monospace, 'SF Mono', Monaco, monospace;
  font-size: 0.85em;
  letter-spacing: -0.01em;
}

kbd {
  /* System font, not monospace: macOS renders the ⌘ ⇧ ⌫ ↵ key glyphs
     properly in SF. Falls back to a generic glyph (or tofu for ⌫) on
     non-Apple platforms, which is an acceptable trade for a Mac-only app. */
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', ui-sans-serif, sans-serif;
  border: 1px solid currentColor;
  padding: 1px 6px 2px;
  font-size: 0.9em;
  line-height: 1;
  display: inline-block;
  vertical-align: baseline;
}

/* =========================================================================
   Brand — fixed top-left
   ========================================================================= */
.brand {
  position: fixed;
  top: var(--gutter);
  left: var(--gutter);
  z-index: 100;
}

.brand a {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.mark { display: block; }

.wordmark {
  font-size: 16px;
  line-height: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* =========================================================================
   Hero — static, no scroll-pin. Comfortable top space for the fixed brand.
   ========================================================================= */
.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 192px var(--gutter) 96px;  /* 24u top clears the brand, 12u bottom */
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: 32px;  /* 4u */
  align-items: flex-start;
}

.hero h1 {
  font-size: max(40px, min(7.5vw, 88px));
  line-height: 1.04;
  font-weight: 700;
  letter-spacing: -0.035em;
  margin: 0;
}

.hero-subhead {
  max-width: 640px;
}

.hero-subhead p {
  font-size: 20px;
  line-height: 32px;
  letter-spacing: -0.01em;
  margin: 0;
  opacity: 0.7;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
}

@media (max-height: 820px) {
  .hero { padding-top: 152px; }
}

@media (max-width: 720px) {
  .hero { padding-top: 128px; }
}

.cta {
  display: inline-block;
  background: var(--fg);
  color: var(--bg);
  font-size: 16px;
  line-height: 24px;
  font-weight: 700;
  padding: 16px 32px;
  text-decoration: none;
  letter-spacing: -0.005em;
  border: 1px solid var(--fg);
  transition: opacity 150ms ease;
}

.cta:hover {
  opacity: 0.85;
}

.cta:active {
  opacity: 0.7;
}

.meta {
  font-size: 12px;
  line-height: 16px;
  letter-spacing: 0.02em;
  opacity: 0.55;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.meta span::after {
  content: '·';
  margin-left: 16px;
  opacity: 0.5;
}

.meta span:last-child::after {
  content: none;
}

/* Subscribe form — revealed below .meta after the user clicks Download. */
.subscribe {
  width: 100%;
  max-width: 640px;
  margin-top: 24px;  /* 3u above the input row */
  animation: subscribe-fade-in 350ms cubic-bezier(.2, 0, 0, 1);
}

@keyframes subscribe-fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}

.subscribe-form {
  display: flex;
  gap: 12px;
  align-items: stretch;
  margin: 0;
}

.subscribe-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  color: var(--fg);
  border: 0;
  border-bottom: 1px solid var(--fg);
  padding: 8px 0;
  font-family: inherit;
  font-size: 14px;
  line-height: 24px;
  font-weight: 400;
  letter-spacing: -0.005em;
  outline-offset: 4px;
  -webkit-appearance: none;
  appearance: none;
  border-radius: 0;
}

.subscribe-input::placeholder {
  color: var(--fg);
  opacity: 0.4;
}

.subscribe-input:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 4px;
}

.subscribe-submit {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--fg);
  padding: 8px 16px;
  font-family: inherit;
  font-size: 14px;
  line-height: 24px;
  font-weight: 700;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background 150ms ease, color 150ms ease, opacity 150ms ease;
  border-radius: 0;
  white-space: nowrap;
}

.subscribe-submit:hover {
  background: var(--fg);
  color: var(--bg);
}

.subscribe-submit:active { opacity: 0.7; }
.subscribe-submit:disabled { opacity: 0.5; cursor: progress; background: transparent; color: var(--fg); }

.subscribe-error {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 20px;
  font-weight: 700;
  letter-spacing: -0.005em;
}

.subscribe-success {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 24px;
  font-weight: 700;
  letter-spacing: -0.005em;
  animation: subscribe-fade-in 350ms cubic-bezier(.2, 0, 0, 1);
}

.subscribe-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  background: var(--fg);
  color: var(--bg);
  font-size: 12px;
  line-height: 1;
  font-weight: 700;
}

@media (prefers-reduced-motion: reduce) {
  .subscribe,
  .subscribe-success {
    animation: none;
  }
}

/* =========================================================================
   Demo — looping video of the bottom tray
   ========================================================================= */
.demo {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 96px var(--gutter);
}

.demo .section-label {
  margin-bottom: 48px;
}

.demo-frame {
  max-width: 1200px;
  margin: 0 auto;
  line-height: 0;  /* kill inline-element baseline gap under the video */
}

.demo video {
  display: block;
  width: 100%;
  height: auto;
  background: var(--bg);
}

/* =========================================================================
   Features
   ========================================================================= */
.features {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 96px var(--gutter);
}

.section-label {
  font-size: 12px;
  line-height: 16px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  opacity: 0.55;
  margin: 0 0 48px;  /* 6u */
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 64px;  /* 8u */
  border-top: var(--hairline) solid currentColor;
  padding-top: 48px;  /* 6u */
}

@media (max-width: 900px) {
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

.feature {
  position: relative;
}

.feature-num {
  font-size: 12px;
  line-height: 16px;
  letter-spacing: 0.12em;
  opacity: 0.5;
  display: block;
  margin-bottom: 24px;  /* 3u */
}

.feature h3 {
  font-size: 28px;
  line-height: 32px;  /* 4u */
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 24px;  /* 3u */
}

.feature p {
  font-size: 16px;
  line-height: 24px;
  margin: 0;
}

.feature kbd {
  font-size: 0.75em;
}

/* =========================================================================
   Colophon — About + Proof, side-by-side at wide viewports.
   ========================================================================= */
.colophon {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 96px var(--gutter) 128px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  column-gap: 96px;
  row-gap: 48px;
  grid-template-areas:
    "label-a label-p"
    "body-a  body-p";
}

.label-about   { grid-area: label-a; }
.label-proof   { grid-area: label-p; }
.colophon-about {
  grid-area: body-a;
  border-top: var(--hairline) solid currentColor;
  padding-top: 48px;
}
.colophon-trust {
  grid-area: body-p;
  border-top: var(--hairline) solid currentColor;
  padding-top: 48px;
}

@media (max-width: 900px) {
  .colophon {
    grid-template-columns: 1fr;
    row-gap: 24px;
    grid-template-areas:
      "label-a"
      "body-a"
      "label-p"
      "body-p";
  }
  .label-proof {
    margin-top: 32px;
  }
}

.col-label {
  font-size: 12px;
  line-height: 16px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  opacity: 0.55;
  margin: 0;
}

.colophon-about p {
  font-size: 20px;
  line-height: 32px;
  letter-spacing: -0.01em;
  margin: 0;
  max-width: 640px;
}

.colophon-trust ul {
  list-style: none;
  padding: 0;
  margin: 0;
  padding-top: 2px;
}

.colophon-trust li {
  font-size: 14px;
  line-height: 32px;  /* matches .colophon-about p */
  font-weight: 700;
  letter-spacing: -0.005em;
}

.colophon-trust li a {
  font-weight: 700;
}

/* =========================================================================
   Footer
   ========================================================================= */
footer {
  border-top: var(--hairline) solid currentColor;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 32px;
  font-size: 13px;
  line-height: 24px;
  letter-spacing: -0.005em;
}

.footer-copy {
  opacity: 0.55;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 720px) {
  .footer-inner { flex-direction: column; gap: 16px; }
}

/* =========================================================================
   Sub-page layout (release-notes, privacy, terms)
   ========================================================================= */
.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 192px var(--gutter) 128px;  /* leaves room for the fixed brand */
}

.page h1 {
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.04;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 64px;
}

.page h2 {
  font-size: 24px;
  line-height: 32px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 64px 0 16px;
  padding-top: 32px;
  border-top: var(--hairline) solid currentColor;
}

.page h2:first-of-type {
  margin-top: 0;
}

.page h3 {
  font-size: 16px;
  line-height: 24px;
  font-weight: 700;
  margin: 32px 0 8px;
  opacity: 0.55;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.page p,
.page li {
  font-size: 18px;
  line-height: 32px;
  letter-spacing: -0.005em;
  margin: 0 0 16px;
}

.page ul {
  padding-left: 20px;
  margin: 0 0 32px;
}

.page li {
  margin-bottom: 8px;
}

.page code {
  background: color-mix(in srgb, currentColor 8%, transparent);
  padding: 1px 6px;
  border-radius: 3px;
}