/* ==========================================================================
   NativeToEnglish — landing page
   1. Tokens          5. Product mockups
   2. Base            6. Features / statement / beta
   3. Header          7. Footer
   4. Hero + demo     8. Motion + responsive
   ========================================================================== */

/* 1. Tokens ---------------------------------------------------------------- */

:root {
  --paper: #fbfaf7;
  --paper-deep: #f3f1ea;
  --surface: #ffffff;
  --surface-sunk: #f7f6f1;

  --ink: #16242e;
  --ink-soft: #3d4f59;
  --muted: #5f6e77;
  --faint: #8b979d;

  /* Brand colours sampled from logo.png: deep blue -> cyan -> teal. */
  --blue: #004ece;
  --blue-deep: #003da6;
  --blue-wash: #e6efff;

  --mint: #dff5ee;
  --mint-ink: #0a5f4c;
  --mint-line: #b9e4d6;

  --accent: #0bb3bd;
  --brand-gradient: linear-gradient(100deg, #004ece 0%, #04faf7 52%, #1cf0a0 100%);
  --cta-gradient: linear-gradient(105deg, #004ece 0%, #0566ad 55%, #0a7f8c 100%);

  --line: #e3e2da;
  --line-soft: #eeede6;

  --shadow-sm: 0 1px 2px rgba(22, 36, 46, 0.05), 0 6px 16px -8px rgba(22, 36, 46, 0.12);
  --shadow-md: 0 2px 4px rgba(22, 36, 46, 0.04), 0 18px 40px -20px rgba(22, 36, 46, 0.22);
  --shadow-lg: 0 4px 8px rgba(22, 36, 46, 0.04), 0 40px 90px -36px rgba(22, 36, 46, 0.34);

  --grain-opacity: 0.032;
  --grain-blend: multiply;

  --sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;

  --shell: 1180px;
  --gutter: clamp(20px, 4vw, 44px);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --ease: cubic-bezier(0.22, 0.68, 0.24, 1);
}

:root:not([data-theme="light"]) {
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;

    --paper: #0d1317;
    --paper-deep: #090e11;
    --surface: #151d22;
    --surface-sunk: #111a1f;

    --ink: #edefea;
    --ink-soft: #c3ccce;
    --muted: #97a4ab;
    --faint: #74838b;

    --blue: #5cb0ff;
    --blue-deep: #8ac6ff;
    --blue-wash: #10233d;

    --mint: #0f2f28;
    --mint-ink: #5fe0b4;
    --mint-line: #1d4a3e;

    --accent: #4fd6ff;

    --line: #263138;
    --line-soft: #1d262b;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4), 0 6px 16px -8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.45), 0 20px 44px -20px rgba(0, 0, 0, 0.7);
    --shadow-lg: 0 6px 12px rgba(0, 0, 0, 0.45), 0 44px 96px -36px rgba(0, 0, 0, 0.85);

    --grain-opacity: 0.05;
    --grain-blend: screen;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;

  --paper: #0d1317;
  --paper-deep: #090e11;
  --surface: #151d22;
  --surface-sunk: #111a1f;

  --ink: #edefea;
  --ink-soft: #c3ccce;
  --muted: #97a4ab;
  --faint: #74838b;

  --blue: #5cb0ff;
  --blue-deep: #8ac6ff;
  --blue-wash: #10233d;

  --mint: #0f2f28;
  --mint-ink: #5fe0b4;
  --mint-line: #1d4a3e;

  --accent: #4fd6ff;

  --line: #263138;
  --line-soft: #1d262b;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4), 0 6px 16px -8px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.45), 0 20px 44px -20px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 6px 12px rgba(0, 0, 0, 0.45), 0 44px 96px -36px rgba(0, 0, 0, 0.85);

  --grain-opacity: 0.05;
  --grain-blend: screen;
}

/* 2. Base ------------------------------------------------------------------ */

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

html {
  /* Smooth scrolling is driven from script.js so anchors work deterministically;
     scroll-padding keeps the sticky header off the target. */
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  font-synthesis-weight: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Paper grain — the whole reason the background does not read as flat #fff. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: var(--grain-opacity);
  mix-blend-mode: var(--grain-blend);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

[hidden] {
  display: none !important;
}

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

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  background: var(--blue);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 0;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: -0.035em;
}

h1 {
  font-size: clamp(2.9rem, 1.35rem + 4.4vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
}

h1 em {
  color: var(--blue);
  font-style: normal;
  font-weight: 600;
}

h2 {
  font-size: clamp(2.25rem, 1.2rem + 3.9vw, 4.1rem);
  line-height: 0.98;
  letter-spacing: -0.042em;
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform 0.22s var(--ease), background-color 0.22s var(--ease),
    border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.button span[aria-hidden="true"] {
  transition: transform 0.22s var(--ease);
}

.button:hover span[aria-hidden="true"] {
  transform: translateX(3px);
}

.button-sm {
  padding: 10px 18px;
  font-size: 0.875rem;
}

.button-primary {
  background: var(--blue);
  color: var(--paper);
  box-shadow: var(--shadow-sm);
}

.button-primary:hover {
  background: var(--blue-deep);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.button-quiet {
  border-color: var(--line);
  color: var(--ink);
  background: transparent;
}

.button-quiet:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.button-brand {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  flex: 0 0 auto;
  padding: 18px 30px;
  color: #ffffff;
  font-size: 1rem;
  background: var(--cta-gradient);
  box-shadow: 0 10px 30px -12px color-mix(in srgb, #004ece 70%, transparent);
}

.button-brand > span {
  position: relative;
  z-index: 1;
}

.button-brand:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 42px -14px color-mix(in srgb, #004ece 85%, transparent);
}

/* Sheen sweep on hover - suppressed under prefers-reduced-motion. */
.button-brand::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(
    105deg,
    transparent 32%,
    rgba(255, 255, 255, 0.3) 48%,
    transparent 64%
  );
  transform: translateX(-130%);
  transition: transform 0.75s var(--ease);
}

.button-brand:hover::after {
  transform: translateX(130%);
}

/* 3. Header ---------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding-top: env(safe-area-inset-top, 0px);
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-stuck {
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--line-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.brand-mark {
  display: block;
  width: auto;
  height: 34px;
  /* The mark carries its own gradient, so it needs no plate behind it. */
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 14px;
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 999px;
  transition: color 0.2s var(--ease);
}

.nav-link:hover {
  color: var(--ink);
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-right: 4px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.theme-toggle:hover {
  color: var(--ink);
  border-color: var(--ink);
}

.theme-toggle svg {
  grid-area: 1 / 1;
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
}

.icon-moon {
  display: none;
}

:root[data-theme="dark"] .icon-sun {
  display: none;
}

:root[data-theme="dark"] .icon-moon {
  display: block;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-sun {
    display: none;
  }
  :root:not([data-theme="light"]) .icon-moon {
    display: block;
  }
}

/* 4. Hero + live demo ------------------------------------------------------ */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.86fr);
  align-items: center;
  gap: clamp(40px, 6vw, 84px);
  padding-top: clamp(56px, 8vw, 104px);
  padding-bottom: clamp(72px, 10vw, 128px);
}

.hero-copy {
  /* Wide enough that each sentence holds its own line; the <br> does the rest. */
  max-width: 46ch;
  margin: 32px 0 34px;
  color: var(--muted);
  font-size: clamp(1.0625rem, 0.9rem + 0.5vw, 1.25rem);
  line-height: 1.55;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.availability {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 30px 0 0;
  color: var(--faint);
  font-size: 0.8125rem;
}

.availability-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #0f9d76;
  box-shadow: 0 0 0 3px color-mix(in srgb, #0f9d76 18%, transparent);
}

.hero-demo-column {
  position: relative;
  /* Soft halo so the demo card floats off the paper. */
  background: radial-gradient(
    58% 50% at 62% 44%,
    color-mix(in srgb, var(--blue) 14%, transparent),
    transparent 68%
  );
}

.demo-window {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 44px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--surface-sunk);
}

.window-bar > span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line);
}

.window-bar > span:first-child {
  background: var(--accent);
}

.window-bar p {
  margin: 0 0 0 auto;
  color: var(--faint);
  font-size: 0.75rem;
  letter-spacing: 0.01em;
}

.demo-content {
  padding: clamp(22px, 3vw, 30px);
}

.label {
  display: block;
  margin-bottom: 10px;
  color: var(--faint);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.draft-text,
.result-text {
  margin: 0;
  font-size: clamp(1.0625rem, 0.95rem + 0.4vw, 1.25rem);
  line-height: 1.4;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.draft {
  min-height: 78px;
}

.draft-text {
  color: var(--ink-soft);
}

.draft-text::after {
  content: "";
  display: inline-block;
  width: 2px;
  height: 1.05em;
  margin-left: 2px;
  vertical-align: -0.18em;
  background: var(--blue);
  opacity: 0;
}

.demo-window.is-typing .draft-text::after {
  opacity: 1;
  animation: blink 1s steps(1, end) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.transform-rule {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 20px 0;
}

.transform-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--line), transparent);
}

.transform-badge {
  padding: 5px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.demo-window.is-working .transform-badge {
  border-color: color-mix(in srgb, var(--blue) 45%, transparent);
  background: var(--blue-wash);
  color: var(--blue);
}

.result {
  position: relative;
  min-height: 150px;
  padding: 20px;
  border: 1px solid var(--mint-line);
  border-radius: var(--radius-md);
  background: var(--mint);
}

.result .label {
  color: var(--mint-ink);
  opacity: 0.85;
}

.result-text {
  color: var(--mint-ink);
  font-weight: 600;
  transition: opacity 0.28s var(--ease), filter 0.28s var(--ease), transform 0.28s var(--ease);
}

.result-text.is-swapping {
  opacity: 0;
  filter: blur(6px);
  transform: translateY(4px);
}

.mode-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
}

.pill {
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  color: var(--mint-ink);
  font-family: inherit;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}

.pill:hover {
  transform: translateY(-1px);
  background: var(--surface);
}

.pill[aria-selected="true"] {
  background: var(--mint-ink);
  color: var(--mint);
}

.demo-hint {
  margin: 16px 4px 0;
  color: var(--faint);
  font-size: 0.8125rem;
  text-align: right;
}

/* 5. Product mockups ------------------------------------------------------- */

.surfaces {
  padding-bottom: clamp(80px, 11vw, 150px);
}

.surface-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  align-items: end;
  gap: clamp(28px, 4vw, 56px);
  padding-top: clamp(40px, 6vw, 72px);
  border-top: 1px solid var(--line-soft);
}

.surface {
  margin: 0;
}

.surface figcaption {
  margin-top: 22px;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1.0625rem;
  font-style: italic;
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

.mock {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-md);
  font-size: 0.8125rem;
}

/* Gmail-style compose window */

.surface-desktop .mock {
  margin-bottom: 64px;
}

.mock-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 20px;
  border-bottom: 1px solid var(--line-soft);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--surface-sunk);
  color: var(--ink);
  font-weight: 600;
}

.mock-bar-controls {
  color: var(--faint);
  letter-spacing: 0.12em;
}

.mock-field {
  display: flex;
  gap: 14px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-soft);
}

.mock-field span {
  min-width: 52px;
  color: var(--faint);
}

.mock-field p {
  margin: 0;
}

.mock-body {
  position: relative;
  padding: 24px 20px 62px;
  min-height: 186px;
}

.mock-body p {
  margin: 0;
  max-width: 34ch;
  color: var(--ink-soft);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.mock-caret {
  position: absolute;
  top: 46px;
  left: 20px;
  width: 2px;
  height: 18px;
  background: var(--blue);
  animation: blink 1.1s steps(1, end) infinite;
}

.mock-trigger {
  position: absolute;
  left: 20px;
  bottom: 18px;
  padding: 7px 15px;
  border-radius: 999px;
  background: var(--blue);
  color: var(--paper);
  font-size: 0.75rem;
  font-weight: 700;
  box-shadow: 0 8px 20px -8px color-mix(in srgb, var(--blue) 70%, transparent);
}

.mock-card {
  position: absolute;
  right: -40px;
  bottom: -56px;
  width: min(296px, 76%);
  padding: 17px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.mock-card-eyebrow {
  margin: 0 0 9px;
  color: var(--blue);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.mock-card-text {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.015em;
}

.mock-card-actions {
  display: flex;
  gap: 8px;
}

.mock-card-actions span {
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 600;
}

.mock-card-actions .is-primary {
  border-color: transparent;
  background: var(--ink);
  color: var(--paper);
}

/* Android selection toolbar */

.mock-phone {
  display: flex;
  flex-direction: column;
  max-width: 310px;
  min-height: 404px;
  margin-inline: auto;
  padding: 22px 16px 84px;
  border-radius: 30px;
}

.mock-notch {
  width: 58px;
  height: 5px;
  margin: 0 auto;
  border-radius: 999px;
  background: var(--line);
}

.mock-thread {
  position: relative;
  display: grid;
  gap: 10px;
  margin-top: auto;
}

.mock-bubble {
  max-width: 88%;
  margin: 0;
  padding: 11px 14px;
  border-radius: 16px;
  font-size: 0.8125rem;
  line-height: 1.45;
}

.mock-bubble-in {
  justify-self: start;
  border-bottom-left-radius: 5px;
  background: var(--surface-sunk);
  color: var(--ink-soft);
}

.mock-bubble-out {
  justify-self: end;
  border-bottom-right-radius: 5px;
  background: var(--blue-wash);
  color: var(--ink);
}

.mock-bubble mark {
  background: color-mix(in srgb, var(--blue) 26%, transparent);
  color: inherit;
  border-radius: 3px;
  padding: 1px 0;
}

.mock-selection {
  position: absolute;
  right: 0;
  bottom: -52px;
  display: flex;
  gap: 4px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  white-space: nowrap;
}

.mock-selection span {
  padding: 6px 10px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 600;
}

.mock-selection .is-primary {
  background: var(--blue);
  color: var(--paper);
}

/* 6. Features / statement / beta ------------------------------------------- */

.features {
  padding-bottom: clamp(84px, 11vw, 150px);
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
}

.section-heading > p {
  max-width: 36ch;
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
  text-wrap: pretty;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(44px, 6vw, 68px);
}

.feature-grid article {
  padding: 24px 22px 28px;
  border: 1px solid var(--line-soft);
  border-top: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.feature-grid article:hover {
  transform: translateY(-3px);
  border-color: var(--line);
  box-shadow: var(--shadow-sm);
}

.feature-number {
  color: var(--blue);
  font-family: var(--serif);
  font-size: 0.9375rem;
  font-style: italic;
  font-weight: 500;
}

.feature-grid h3 {
  margin: 34px 0 12px;
  font-family: var(--sans);
  font-size: 1.1875rem;
  font-weight: 600;
  letter-spacing: -0.028em;
}

.feature-grid p {
  max-width: 32ch;
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.62;
  text-wrap: pretty;
}

.statement {
  margin-bottom: clamp(84px, 11vw, 140px);
}

.statement-panel {
  position: relative;
  margin: 0;
  padding: clamp(66px, 9vw, 110px) clamp(24px, 5vw, 60px);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, #1c2e3a 0%, #13212a 58%, #16242e 100%);
  color: #f4f3ee;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

/* A hairline rule keeps the quote from floating loose on the page. */
.statement-panel::before {
  content: "";
  position: absolute;
  top: clamp(34px, 5vw, 52px);
  left: 50%;
  width: 44px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand-gradient);
  transform: translateX(-50%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .statement-panel {
    border-color: var(--line);
    background: linear-gradient(155deg, #1b262c 0%, #141d22 60%, #121a1f 100%);
  }
}

:root[data-theme="dark"] .statement-panel {
  border-color: var(--line);
  background: linear-gradient(155deg, #1b262c 0%, #141d22 60%, #121a1f 100%);
}

.statement p {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.9rem, 1rem + 3.5vw, 3.5rem);
  font-weight: 500;
  line-height: 1.06;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.beta {
  padding-bottom: clamp(84px, 11vw, 140px);
}

/* No panel here: a second card directly under the statement panel read as
   two competing blocks. The gradient button carries the weight instead. */
.beta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(32px, 5vw, 56px);
}

.beta-copy h2 {
  max-width: 17ch;
  margin-bottom: 20px;
}

.beta-copy p:not(.eyebrow) {
  max-width: 46ch;
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  text-wrap: pretty;
}

/* 7. Footer ---------------------------------------------------------------- */

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 92px;
  padding-block: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8125rem;
}

footer p {
  margin: 0;
}

/* 8. Motion + responsive --------------------------------------------------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 48px;
  }

  .hero-demo-column {
    max-width: 480px;
  }

  .demo-hint {
    text-align: left;
    margin-left: 0;
  }

  .surface-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 56px;
  }

  .surface-mobile {
    max-width: 340px;
  }

  /* Full-width compose mock: the card can no longer hang a full 40px past the gutter. */
  .mock-card {
    right: -12px;
    bottom: -48px;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  html {
    scroll-padding-top: 80px;
  }

  .brand-name {
    display: none;
  }

  .nav-link {
    display: none;
  }

  .section-heading {
    display: block;
  }

  .section-heading > p {
    margin-top: 22px;
  }

  .feature-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .surface-desktop .mock {
    margin-bottom: 0;
  }

  .mock-card {
    position: static;
    width: auto;
    margin: 0 16px 20px;
  }

  .mock-body {
    padding-bottom: 66px;
    min-height: 140px;
  }

  .beta-panel {
    display: block;
  }

  .button-brand {
    margin-top: 26px;
  }

  footer {
    display: block;
  }

  footer p {
    margin-top: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* Bangla output in the live demo keeps its own face and slightly larger size. */
[lang="bn"] {
  font-family: "Noto Sans Bengali", var(--sans);
  font-size: 1.05em;
  line-height: 1.6;
  letter-spacing: 0;
}