/* Pulse Mail landing — tokens from src/styles/app.css. No tracking. */
@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/inter-400.woff2") format("woff2");
}
@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/inter-500.woff2") format("woff2");
}
@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/inter-600.woff2") format("woff2");
}
@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/inter-700.woff2") format("woff2");
}

:root {
  --bg: #f8fafd;
  --bg-accent: #eef4ff;
  --surface: #ffffff;
  --surface-dim: #f2f6fc;
  --surface-container: #eef2f9;
  --text: #1f1f1f;
  --text-muted: #444746;
  --text-faint: #5e5e5e;
  --primary: #0b57d0;
  --primary-hover: #0846ad;
  --on-primary: #ffffff;
  --primary-container: #d3e3fd;
  --on-primary-container: #041e49;
  --outline: #c4c7c5;
  --divider: #e7eaee;
  --otp: #146c2e;
  --otp-container: #c4eed0;
  --glow: rgba(11, 87, 208, 0.18);
  /* CTA fills stay deep blue in both themes so labels stay white (WCAG AAA).
     Do not reuse --primary/--on-primary here: those invert in dark (pastel chip). */
  --btn-primary-bg: #0842a0;
  --btn-primary-fg: #ffffff;
  --btn-primary-hover: #062e6f;
  --btn-primary-active: #041e49;
  --btn-primary-border: #062e6f;
  --btn-secondary-bg: #ffffff;
  --btn-secondary-fg: #1f1f1f;
  --btn-secondary-border: #3c4043;
  --btn-secondary-hover: #eef2f9;
  --btn-secondary-active: #e3e8f0;
  --btn-focus: #0b57d0;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 12px 32px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 8px 16px rgba(15, 23, 42, 0.06), 0 28px 64px rgba(15, 23, 42, 0.12);
  --radius: 16px;
  --radius-lg: 24px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --max: 1120px;
  --ease: cubic-bezier(0.05, 0.7, 0.1, 1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --bg-accent: #161b24;
    --surface: #1b1d22;
    --surface-dim: #16181c;
    --surface-container: #23262c;
    --text: #e8eaed;
    --text-muted: #c4c7c5;
    --text-faint: #9aa0a6;
    --primary: #a8c7fa;
    --primary-hover: #c2d7fc;
    --on-primary: #062e6f;
    --primary-container: #0842a0;
    --on-primary-container: #d3e3fd;
    --outline: #5f6368;
    --divider: #2c2f35;
    --otp: #6dd58c;
    --otp-container: #0f5223;
    --glow: rgba(168, 199, 250, 0.12);
    --btn-primary-bg: #1e40af;
    --btn-primary-fg: #ffffff;
    --btn-primary-hover: #172e7c;
    --btn-primary-active: #102056;
    --btn-primary-border: #93b4f8;
    --btn-secondary-bg: #23262c;
    --btn-secondary-fg: #f1f3f4;
    --btn-secondary-border: #c4c7c5;
    --btn-secondary-hover: #2e323a;
    --btn-secondary-active: #3a3f48;
    --btn-focus: #a8c7fa;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 16px 40px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.45);
    color-scheme: dark;
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI Variable Text", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 16px;
  font-weight: 400;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--primary);
  text-underline-offset: 3px;
}

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

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

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  background: var(--primary);
  color: var(--on-primary);
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 30;
}
.skip:focus {
  top: 12px;
}

.wrap {
  width: min(var(--max), calc(100% - 48px));
  margin-inline: auto;
}

header.site {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px) saturate(1.2);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--divider);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  font-weight: 650;
  letter-spacing: -0.03em;
  margin-right: auto;
  font-size: 15px;
}
.brand img {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--outline) 40%, transparent);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 4px;
  align-items: center;
}
.nav-links a:not(.btn) {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 999px;
}
.nav-links a:not(.btn):hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
  background: var(--surface-container);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 10px 18px;
  min-height: 44px;
  font-weight: 650;
  font-size: 14px;
  letter-spacing: -0.01em;
  text-decoration: none;
  border: 1.5px solid transparent;
  line-height: 1.2;
  cursor: pointer;
  transition:
    background 160ms var(--ease),
    color 160ms var(--ease),
    border-color 160ms var(--ease),
    box-shadow 160ms var(--ease),
    transform 160ms var(--ease);
}
.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.btn:hover {
  text-decoration: none;
}
.btn:active {
  transform: translateY(1px);
}
.btn:focus-visible {
  outline: 2px solid var(--btn-focus);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-fg);
  border-color: var(--btn-primary-border);
  box-shadow: 0 1px 2px color-mix(in srgb, var(--btn-primary-bg) 40%, transparent);
}
.btn-primary:hover {
  background: var(--btn-primary-hover);
  border-color: var(--btn-primary-hover);
  color: var(--btn-primary-fg);
}
.btn-primary:active {
  background: var(--btn-primary-active);
  border-color: var(--btn-primary-active);
}
.btn-secondary,
.btn-ghost {
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-fg);
  border-color: var(--btn-secondary-border);
}
.btn-secondary:hover,
.btn-ghost:hover {
  background: var(--btn-secondary-hover);
  border-color: var(--btn-secondary-fg);
  color: var(--btn-secondary-fg);
}
.btn-secondary:active,
.btn-ghost:active {
  background: var(--btn-secondary-active);
}

/* Hero */
.hero-band {
  position: relative;
  overflow: hidden;
  padding: var(--space-8) 0 var(--space-7);
  background:
    radial-gradient(900px 420px at 85% -10%, var(--glow), transparent 60%),
    radial-gradient(600px 280px at 10% 110%, color-mix(in srgb, var(--primary) 8%, transparent), transparent 70%);
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.18fr);
  gap: var(--space-7);
  align-items: center;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--on-primary-container);
  background: var(--primary-container);
  padding: 5px 11px;
  border-radius: 999px;
  font-weight: 650;
  margin-bottom: var(--space-4);
}
h1 {
  font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
  margin: 0 0 var(--space-4);
  font-weight: 700;
}
.lede {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-5);
  max-width: 38rem;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.fine {
  font-size: 13px;
  color: var(--text-faint);
  margin: 0;
  max-width: 40rem;
}

/* Window chrome around product shots */
.window {
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 40px;
  padding: 0 14px;
  background: var(--surface-dim);
  border-bottom: 1px solid var(--divider);
}
.traffic {
  display: flex;
  gap: 6px;
}
.traffic i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: block;
  background: var(--outline);
}
.traffic i:nth-child(1) {
  background: #ff5f57;
}
.traffic i:nth-child(2) {
  background: #febc2e;
}
.traffic i:nth-child(3) {
  background: #28c840;
}
.window-title {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-faint);
  letter-spacing: -0.01em;
}
.window img,
.window picture {
  display: block;
  width: 100%;
}
.window img {
  background: var(--surface-dim);
}

section {
  padding: var(--space-8) 0;
}
.section-title {
  font-size: clamp(1.5rem, 2.4vw, 1.85rem);
  letter-spacing: -0.035em;
  margin: 0 0 var(--space-2);
  font-weight: 700;
}
.section-lead {
  color: var(--text-muted);
  margin: 0 0 var(--space-6);
  max-width: 40rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.card {
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: 22px 22px 24px;
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease), border-color 180ms var(--ease);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--primary) 28%, var(--divider));
}
.card h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  letter-spacing: -0.02em;
  font-weight: 650;
}
.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.card .icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--primary-container);
  color: var(--on-primary-container);
  margin-bottom: 14px;
}
.card .icon svg {
  display: block;
}

/* Gallery */
.gallery {
  position: relative;
}
.gallery > input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-5);
}
.tabs label {
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--outline);
  color: var(--text-muted);
  background: var(--surface);
  transition: background 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}
.tabs label:hover {
  border-color: var(--primary);
  color: var(--text);
}
.tabs label:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.stage figure {
  display: none;
  margin: 0;
}
.stage figcaption {
  font-size: 13px;
  color: var(--text-faint);
  margin-top: 12px;
  text-align: center;
}

#g-inbox:checked ~ .tabs label[for="g-inbox"],
#g-thread:checked ~ .tabs label[for="g-thread"],
#g-compose:checked ~ .tabs label[for="g-compose"],
#g-settings:checked ~ .tabs label[for="g-settings"],
#g-account:checked ~ .tabs label[for="g-account"],
#g-search:checked ~ .tabs label[for="g-search"],
#g-labels:checked ~ .tabs label[for="g-labels"],
#g-otp:checked ~ .tabs label[for="g-otp"],
#g-dark:checked ~ .tabs label[for="g-dark"] {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}
#g-inbox:focus-visible ~ .tabs label[for="g-inbox"],
#g-thread:focus-visible ~ .tabs label[for="g-thread"],
#g-compose:focus-visible ~ .tabs label[for="g-compose"],
#g-settings:focus-visible ~ .tabs label[for="g-settings"],
#g-account:focus-visible ~ .tabs label[for="g-account"],
#g-search:focus-visible ~ .tabs label[for="g-search"],
#g-labels:focus-visible ~ .tabs label[for="g-labels"],
#g-otp:focus-visible ~ .tabs label[for="g-otp"],
#g-dark:focus-visible ~ .tabs label[for="g-dark"] {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

#g-inbox:checked ~ .stage .p-inbox,
#g-thread:checked ~ .stage .p-thread,
#g-compose:checked ~ .stage .p-compose,
#g-settings:checked ~ .stage .p-settings,
#g-account:checked ~ .stage .p-account,
#g-search:checked ~ .stage .p-search,
#g-labels:checked ~ .stage .p-labels,
#g-otp:checked ~ .stage .p-otp,
#g-dark:checked ~ .stage .p-dark {
  display: block;
}

.why {
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow);
}
.why h2 {
  margin-top: 0;
  letter-spacing: -0.03em;
}
.why p,
.why li {
  color: var(--text-muted);
}
.why ul {
  padding-left: 1.2rem;
}
.why code,
.prose code {
  font-family: "Cascadia Mono", "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.86em;
  background: var(--surface-container);
  padding: 0.12em 0.38em;
  border-radius: 6px;
  overflow-wrap: anywhere;
}

.downloads {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.os {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.os .btn {
  align-self: stretch;
  margin-top: auto;
  min-height: 44px;
}
.nav-links .btn {
  min-height: 36px;
  padding: 7px 14px;
}
.note {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--surface-container);
  color: var(--text-muted);
  width: fit-content;
}
.badge-live {
  background: var(--otp-container);
  color: var(--otp);
}

.prose {
  max-width: 46rem;
  padding-top: var(--space-7);
  padding-bottom: var(--space-8);
}
.prose h1 {
  font-size: clamp(2rem, 3vw, 2.4rem);
  margin-top: 0;
  color: var(--text);
}
.prose h2 {
  font-size: 1.28rem;
  letter-spacing: -0.02em;
  margin-top: 2.2rem;
  color: var(--text);
}
.prose p,
.prose li {
  color: var(--text-muted);
}
.prose ul,
.prose ol {
  padding-left: 1.2rem;
}
.crumb {
  font-size: 13px;
  color: var(--text-faint);
  margin-bottom: var(--space-4);
}
.crumb a {
  color: var(--text-muted);
  text-decoration: none;
}
.crumb a:hover {
  color: var(--primary);
}
.meta {
  color: var(--text-faint);
  font-size: 14px;
}

footer.site {
  border-top: 1px solid var(--divider);
  padding: var(--space-6) 0 var(--space-7);
  color: var(--text-faint);
  font-size: 14px;
  background: var(--surface-dim);
}
.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
}
.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 4px;
  margin-left: auto;
}
.foot a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 999px;
}
.foot a:hover {
  color: var(--text);
  background: var(--surface-container);
}
.legal {
  margin-top: var(--space-4);
  font-size: 12px;
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .features,
  .downloads {
    grid-template-columns: 1fr 1fr;
  }
  .hero-band {
    padding-top: var(--space-6);
  }
}

@media (max-width: 800px) {
  .nav-optional {
    display: none;
  }
  .wrap {
    width: min(var(--max), calc(100% - 32px));
  }
  .tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: none;
  }
  .tabs::-webkit-scrollbar {
    display: none;
  }
  .tabs label {
    flex: 0 0 auto;
  }
}

@media (max-width: 640px) {
  .features,
  .downloads {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  html {
    scroll-padding-top: 128px;
  }
  .nav {
    flex-wrap: wrap;
    padding: 8px 0;
    gap: 8px;
  }
  .nav-links {
    margin-left: auto;
  }
  section {
    padding: var(--space-7) 0;
  }
  .window-bar {
    height: 34px;
  }
  .prose {
    padding-top: var(--space-6);
  }
}

@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;
  }
}