/* =============================================================
   Auto Center — WinUI 3 / Fluent Design web theme
   Mica + Acrylic + Layered cards + Reveal highlight
   ============================================================= */

:root {
  /* --- Windows 11 accent ramp ---------------------------------- */
  --accent-base:        #005FB8;      /* SystemAccentColor (light)  */
  --accent-secondary:   #003E92;
  --accent-tertiary:    #002C6B;
  --accent-on-mica:     #003E92;      /* a11y on Mica light         */
  --accent-text-on-bg:  #003E92;

  /* --- Mica / surface tokens (light) --------------------------- */
  --mica-base:          #f3f3f3;
  --mica-tint-1:        rgba(0, 95, 184, 0.045);
  --mica-tint-2:        rgba(76, 194, 255, 0.06);
  --mica-tint-3:        rgba(255, 121, 198, 0.035);

  --layer-1:            rgba(255, 255, 255, 0.70);
  --layer-2:            rgba(255, 255, 255, 0.55);
  --layer-alt:          rgba(249, 249, 249, 0.85);

  --card-fill:          rgba(255, 255, 255, 0.70);
  --card-fill-secondary:rgba(246, 246, 246, 0.50);
  --card-fill-tertiary: rgba(255, 255, 255, 0.40);

  --control-fill:       rgba(255, 255, 255, 0.70);
  --control-fill-hover: rgba(249, 249, 249, 0.50);
  --control-fill-press: rgba(249, 249, 249, 0.30);

  /* WinUI signature: hairline top stroke + slightly darker bottom */
  --stroke-default:     rgba(0, 0, 0, 0.0578);
  --stroke-default-bot: rgba(0, 0, 0, 0.1622);
  --stroke-card:        rgba(0, 0, 0, 0.0578);
  --stroke-divider:     rgba(0, 0, 0, 0.0803);
  --stroke-focus:       rgba(0, 0, 0, 0.8956);
  --stroke-focus-inner: var(--accent-base);

  --text-primary:       rgba(0, 0, 0, 0.8956);
  --text-secondary:     rgba(0, 0, 0, 0.6063);
  --text-tertiary:      rgba(0, 0, 0, 0.4458);
  --text-on-accent:     #ffffff;
  --text-disabled:      rgba(0, 0, 0, 0.3614);

  /* WinUI elevation system */
  --shadow-card:        0 2px 4px rgba(0, 0, 0, 0.04),
                        0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-flyout:      0 8px 16px rgba(0, 0, 0, 0.14),
                        0 0 1px rgba(0, 0, 0, 0.10);
  --shadow-elevated:    0 16px 32px rgba(0, 0, 0, 0.10),
                        0 4px 8px rgba(0, 0, 0, 0.06);

  /* Corner radii (Windows 11 = 8 / 4 / overlay 8) */
  --radius-control:     4px;
  --radius-card:        8px;
  --radius-overlay:     8px;
  --radius-pill:        9999px;

  /* Type system mirrors XAML CaptionTextBlockStyle etc. */
  --type-caption:       12px / 16px;
  --type-body:          14px / 20px;
  --type-body-strong:   14px / 20px;
  --type-body-large:    18px / 24px;
  --type-subtitle:      20px / 28px;
  --type-title:         28px / 36px;
  --type-title-large:   40px / 52px;
  --type-display:       68px / 92px;

  --maxw:               1080px;

  --acrylic-blur:       saturate(180%) blur(60px);
}

/* -------- Dark theme ----------------------------------------- */
@media (prefers-color-scheme: dark) {
  :root {
    --accent-base:        #4cc2ff;     /* SystemAccentColorLight2 */
    --accent-secondary:   #76d2ff;
    --accent-tertiary:    #99ddff;
    --accent-on-mica:     #76d2ff;
    --accent-text-on-bg:  #99ddff;

    --mica-base:          #1c1c1c;
    --mica-tint-1:        rgba(76, 194, 255, 0.06);
    --mica-tint-2:        rgba(0, 120, 212, 0.10);
    --mica-tint-3:        rgba(180, 90, 211, 0.05);

    --layer-1:            rgba(58, 58, 58, 0.50);
    --layer-2:            rgba(58, 58, 58, 0.30);
    --layer-alt:          rgba(40, 40, 40, 0.60);

    --card-fill:          rgba(255, 255, 255, 0.0512);
    --card-fill-secondary:rgba(255, 255, 255, 0.0326);
    --card-fill-tertiary: rgba(255, 255, 255, 0.0419);

    --control-fill:       rgba(255, 255, 255, 0.0605);
    --control-fill-hover: rgba(255, 255, 255, 0.0837);
    --control-fill-press: rgba(255, 255, 255, 0.0326);

    /* dark uses lighter top-edge stroke (light on black) */
    --stroke-default:     rgba(255, 255, 255, 0.0698);
    --stroke-default-bot: rgba(0, 0, 0, 0.25);
    --stroke-card:        rgba(255, 255, 255, 0.0837);
    --stroke-divider:     rgba(255, 255, 255, 0.0837);
    --stroke-focus:       #ffffff;

    --text-primary:       rgba(255, 255, 255, 1);
    --text-secondary:     rgba(255, 255, 255, 0.786);
    --text-tertiary:      rgba(255, 255, 255, 0.5442);
    --text-on-accent:     #000000;
    --text-disabled:      rgba(255, 255, 255, 0.3628);

    --shadow-card:        0 2px 4px rgba(0, 0, 0, 0.30),
                          0 1px 2px rgba(0, 0, 0, 0.40);
    --shadow-flyout:      0 8px 16px rgba(0, 0, 0, 0.45),
                          0 0 1px rgba(0, 0, 0, 0.50);
    --shadow-elevated:    0 16px 32px rgba(0, 0, 0, 0.45),
                          0 4px 8px rgba(0, 0, 0, 0.30);
  }
}

/* =============================================================
   Base + Mica background
   ============================================================= */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI Variable Text", "Segoe UI Variable", "Segoe UI",
               -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-size: 14px;
  line-height: 20px;
  color: var(--text-primary);
  background: var(--mica-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss06", "calt", "ss01";
  font-variation-settings: "wght" 400;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Mica: tinted gradient blobs that mimic desktop bleed-through.
   Two layers: large soft color blobs + 1px noise texture.       */
body::before {
  content: "";
  position: fixed;
  inset: -10vmax;
  z-index: -2;
  background:
    radial-gradient(60vmax 50vmax at 12% 8%,  var(--mica-tint-1) 0%, transparent 60%),
    radial-gradient(50vmax 45vmax at 88% 18%, var(--mica-tint-2) 0%, transparent 65%),
    radial-gradient(70vmax 60vmax at 50% 110%,var(--mica-tint-3) 0%, transparent 60%),
    var(--mica-base);
  pointer-events: none;
}

/* Subtle SVG noise to fake Mica's micro-texture. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.40;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.55 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

@media (prefers-color-scheme: dark) {
  body::after { opacity: 0.18; mix-blend-mode: soft-light; }
}

/* Selection */
::selection { background: var(--accent-base); color: var(--text-on-accent); }

/* Skip-to-content link — visible only when focused */
.skip-link {
  position: absolute;
  left: 12px;
  top: -100px;
  z-index: 1000;
  padding: 8px 16px;
  background: var(--accent-base);
  color: var(--text-on-accent);
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius-control);
  text-decoration: none;
  box-shadow: var(--shadow-flyout);
  transition: top 160ms cubic-bezier(.55,.55,0,1);
}
.skip-link:focus,
.skip-link:focus-visible {
  top: 12px;
  outline: 2px solid var(--stroke-focus);
  outline-offset: 2px;
}

a {
  color: var(--accent-text-on-bg);
  text-decoration: none;
  transition: color 120ms cubic-bezier(.55,.55,0,1),
              opacity 120ms cubic-bezier(.55,.55,0,1);
}
a:hover { color: var(--accent-base); text-decoration: underline; text-underline-offset: 2px; text-decoration-thickness: 1px; }
a:active { opacity: 0.65; }

code, kbd {
  font-family: "Cascadia Code", "Cascadia Mono", "Consolas", ui-monospace, monospace;
  font-size: 0.875em;
  background: var(--card-fill-secondary);
  padding: 1px 6px;
  border-radius: var(--radius-control);
  border: 1px solid var(--stroke-card);
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

/* =============================================================
   Acrylic Navigation
   ============================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 8px 0;
  background: var(--layer-1);
  -webkit-backdrop-filter: var(--acrylic-blur);
  backdrop-filter: var(--acrylic-blur);
  border-bottom: 1px solid var(--stroke-divider);
}

/* InfoBar-style hairline accent at very top */
.nav::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--stroke-default) 20%,
    var(--stroke-default) 80%,
    transparent 100%);
  pointer-events: none;
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 40px;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
  padding: 6px 10px;
  border-radius: var(--radius-control);
  margin-left: -10px;
  transition: background-color 120ms;
}
.nav-brand:hover { background: var(--control-fill-hover); text-decoration: none; }
.nav-brand img  { width: 20px; height: 20px; display: block; }

.nav-links { display: flex; gap: 2px; align-items: center; }
.nav-links a {
  position: relative;
  color: var(--text-secondary);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: var(--radius-control);
  transition: background-color 120ms, color 120ms;
}
.nav-links a:hover {
  color: var(--text-primary);
  background: var(--control-fill-hover);
  text-decoration: none;
}
.nav-links a:active { background: var(--control-fill-press); }
.nav-links a[aria-current="page"] {
  color: var(--text-primary);
}
.nav-links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 2px;
  border-radius: 1px;
  background: var(--accent-base);
}

/* =============================================================
   Hero — Display title + Mica window-style subtle frame
   ============================================================= */
.hero {
  padding: 96px 0 72px;
  text-align: center;
  position: relative;
}

.hero h1 {
  font-family: "Segoe UI Variable Display", "Segoe UI Variable", "Segoe UI", sans-serif;
  font-size: clamp(40px, 7vw, 68px);
  line-height: 1.06;
  font-weight: 600;
  letter-spacing: -0.022em;
  margin: 0 0 20px;
  color: var(--text-primary);
  font-variation-settings: "wght" 600, "opsz" 36;
}

/* Subtle vertical fade on the display title for depth */
.hero h1 {
  background: linear-gradient(180deg,
    var(--text-primary) 0%,
    color-mix(in srgb, var(--text-primary) 78%, transparent) 110%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* "Windows" gets the accent color */
.hero h1 .accent {
  color: var(--accent-on-mica);
  -webkit-text-fill-color: var(--accent-on-mica);
  background: none;
}

.hero p.lede {
  font: 400 var(--type-body-large) "Segoe UI Variable", sans-serif;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

/* WinUI hint chip above hero (optional, added in HTML) */
.hint-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 auto 28px;
  padding: 4px 12px 4px 4px;
  background: var(--card-fill);
  border: 1px solid var(--stroke-card);
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: var(--text-secondary);
  box-shadow: var(--shadow-card);
}
.hint-pill .dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border-radius: var(--radius-pill);
  background: var(--accent-base);
  color: var(--text-on-accent);
  font-weight: 600;
  font-size: 11px;
}

/* =============================================================
   Buttons — WinUI AccentButton / Standard button
   ============================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  min-height: 32px;
  border-radius: var(--radius-control);
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  line-height: 20px;
  border: 1px solid var(--stroke-default);
  background: var(--control-fill);
  color: var(--text-primary);
  cursor: pointer;
  position: relative;
  isolation: isolate;
  transition:
    background-color 167ms cubic-bezier(.55,.55,0,1),
    border-color 167ms cubic-bezier(.55,.55,0,1),
    color 167ms cubic-bezier(.55,.55,0,1),
    transform 80ms cubic-bezier(.55,.55,0,1);
  overflow: hidden;
}
.btn:hover { text-decoration: none; background: var(--control-fill-hover); }
.btn:active { background: var(--control-fill-press); transform: scale(0.985); }

/* Signature WinUI bottom-edge highlight (control-stroke) */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 1;
  box-shadow: inset 0 -1px 0 0 var(--stroke-default-bot);
}

/* Accent (primary) button */
.btn-primary {
  background: var(--accent-base);
  color: var(--text-on-accent);
  border-color: transparent;
  box-shadow:
    inset 0 1px 0 0 rgba(255,255,255,0.10),
    0 1px 2px rgba(0, 0, 0, 0.10);
}
.btn-primary::before {
  box-shadow: inset 0 -1px 0 0 rgba(0, 0, 0, 0.16);
}
.btn-primary:hover {
  background: color-mix(in srgb, var(--accent-base) 90%, white 0%);
  filter: brightness(1.07);
}
.btn-primary:active {
  background: color-mix(in srgb, var(--accent-base) 80%, black 0%);
  filter: brightness(0.93);
  color: rgba(255, 255, 255, 0.78);
}

@media (prefers-color-scheme: dark) {
  .btn-primary:active { color: rgba(0, 0, 0, 0.55); }
}

/* Secondary inherits standard control look */
.btn-secondary { /* same as default .btn */ }

/* Make sure button children sit above the bottom-stroke pseudo */
.btn > * { position: relative; z-index: 2; }

/* Focus visuals: outer black + inner accent (WinUI signature) */
:focus-visible {
  outline: 2px solid var(--stroke-focus);
  outline-offset: 2px;
  border-radius: var(--radius-control);
}
.btn:focus-visible {
  outline-offset: 2px;
  box-shadow:
    inset 0 0 0 2px var(--text-on-accent),
    0 0 0 2px var(--stroke-focus);
}
.btn-secondary:focus-visible {
  box-shadow:
    inset 0 0 0 2px var(--mica-base),
    0 0 0 2px var(--stroke-focus);
}

/* =============================================================
   Sections + headings
   ============================================================= */
section { padding: 72px 0; position: relative; }

section h2 {
  font-family: "Segoe UI Variable Display", "Segoe UI Variable", sans-serif;
  font-size: 28px;
  line-height: 36px;
  font-weight: 600;
  letter-spacing: -0.012em;
  margin: 0 0 8px;
  color: var(--text-primary);
  font-variation-settings: "wght" 600, "opsz" 24;
}

section .section-lede {
  color: var(--text-secondary);
  margin: 0 0 36px;
  font-size: 14px;
  line-height: 20px;
}

/* "Install" section override: was inline `background: var(--bg-soft)`.
   Replace the inline color via a class that respects Mica layering. */
#install { background: transparent; }
#install::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      transparent 0%,
      var(--card-fill-tertiary) 20%,
      var(--card-fill-tertiary) 80%,
      transparent 100%);
  pointer-events: none;
  z-index: -1;
}

/* =============================================================
   Feature cards (WinUI Card / Acrylic layered)
   ============================================================= */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}

.feature {
  position: relative;
  isolation: isolate;
  background: var(--card-fill);
  border: 1px solid var(--stroke-card);
  border-radius: var(--radius-card);
  padding: 20px 22px 22px;
  box-shadow: var(--shadow-card);
  transition: transform 200ms cubic-bezier(.55,.55,0,1),
              border-color 200ms,
              background-color 200ms;
  overflow: hidden;
}
.feature::before {
  /* signature WinUI "card stroke bottom" sharper line */
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: inset 0 -1px 0 0 var(--stroke-default-bot);
  z-index: 1;
}
.feature:hover {
  background: color-mix(in srgb, var(--card-fill) 90%, white 5%);
  transform: translateY(-1px);
}
@media (prefers-color-scheme: dark) {
  .feature:hover {
    background: color-mix(in srgb, var(--card-fill) 60%, white 6%);
  }
}

.feature h3 {
  font-size: 14px;
  line-height: 20px;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--text-primary);
}
.feature p {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 18px;
  margin: 0;
}

/* Icon tile — matches WinUI Mica accent square */
.feature-glyph {
  display: inline-flex;
  width: 36px; height: 36px;
  border-radius: var(--radius-card);
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--accent-base) 18%, transparent),
      color-mix(in srgb, var(--accent-base) 8%, transparent));
  color: var(--accent-on-mica);
  font-size: 18px;
  margin-bottom: 14px;
  border: 1px solid color-mix(in srgb, var(--accent-base) 14%, transparent);
  box-shadow: inset 0 -1px 0 0 color-mix(in srgb, var(--accent-base) 22%, transparent);
}
.feature-glyph svg { width: 18px; height: 18px; display: block; }

/* =============================================================
   Install split cards
   ============================================================= */
.install-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 760px) {
  .install-grid { grid-template-columns: 1fr; }
}

.install-card {
  position: relative;
  isolation: isolate;
  background: var(--card-fill);
  border: 1px solid var(--stroke-card);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.install-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: inset 0 -1px 0 0 var(--stroke-default-bot);
  z-index: 1;
}
/* Recommended card gets a quiet accent wash + top-edge accent line.
   The top accent line uses an inset box-shadow so it doesn't collide
   with the reveal-highlight ::after pseudo on the same element. */
.install-card:has(.badge-pill.recommended) {
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--accent-base) 7%, transparent) 0%,
      transparent 40%),
    var(--card-fill);
  border-color: color-mix(in srgb, var(--accent-base) 22%, var(--stroke-card));
  box-shadow:
    inset 0 2px 0 0 var(--accent-base),
    var(--shadow-card);
}

.install-card h3 {
  margin: 0 0 4px;
  font-size: 18px;
  line-height: 24px;
  font-weight: 600;
  color: var(--text-primary);
  font-variation-settings: "wght" 600;
}
.install-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 20px;
  margin: 0 0 20px;
  flex: 1;
}

.install-card .btn { align-self: flex-start; }

/* Badge pills */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
  border: 1px solid transparent;
  background: var(--card-fill-secondary);
  color: var(--text-secondary);
}
.badge-pill.recommended {
  background: color-mix(in srgb, var(--accent-base) 14%, transparent);
  color: var(--accent-on-mica);
  border-color: color-mix(in srgb, var(--accent-base) 28%, transparent);
}
.badge-pill.foss {
  background: rgba(46, 160, 67, 0.14);
  color: #1b6f30;
  border-color: rgba(46, 160, 67, 0.28);
}
@media (prefers-color-scheme: dark) {
  .badge-pill.foss { color: #6dd58a; border-color: rgba(109, 213, 138, 0.28); }
}

/* =============================================================
   Screenshots — gallery with graceful missing-image placeholders
   ============================================================= */
.shots {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-auto-rows: auto;
  gap: 12px;
}
.shots .shot--lead { grid-column: 1 / -1; }

@media (max-width: 720px) {
  .shots { grid-template-columns: 1fr; }
}

.shot {
  position: relative;
  margin: 0;
  background: var(--card-fill);
  border: 1px solid var(--stroke-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 200ms cubic-bezier(.55,.55,0,1),
              box-shadow 200ms cubic-bezier(.55,.55,0,1);
}
.shot::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: inset 0 -1px 0 0 var(--stroke-default-bot);
  z-index: 2;
}
.shot:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-elevated);
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--card-fill-secondary);
}
.shot--lead img { aspect-ratio: 16 / 9; }

.shot figcaption {
  padding: 14px 18px 16px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 18px;
  border-top: 1px solid var(--stroke-divider);
}

/* Missing-image state: hide broken <img>, show a styled placeholder
   that mimics a Mica-tinted window pane with the screenshot label. */
.shot--missing img { display: none; }
.shot--missing {
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--accent-base) 6%, transparent) 0%,
      transparent 60%),
    repeating-linear-gradient(45deg,
      var(--card-fill-secondary) 0,
      var(--card-fill-secondary) 14px,
      transparent 14px,
      transparent 28px),
    var(--card-fill);
}
.shot--missing::after {
  content: "Screenshot · " attr(data-label);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  aspect-ratio: 16 / 10;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.shot--missing.shot--lead::after { aspect-ratio: 16 / 9; }

/* =============================================================
   FAQ — WinUI Expander
   ============================================================= */
.faq {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 820px;
}

.faq-item {
  position: relative;
  background: var(--card-fill);
  border: 1px solid var(--stroke-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: border-color 200ms, background-color 200ms;
}
.faq-item::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: inset 0 -1px 0 0 var(--stroke-default-bot);
  z-index: 1;
}
.faq-item[open] {
  background: color-mix(in srgb, var(--card-fill) 92%, white 4%);
}
@media (prefers-color-scheme: dark) {
  .faq-item[open] {
    background: color-mix(in srgb, var(--card-fill) 60%, white 5%);
  }
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  user-select: none;
  font-size: 14px;
  line-height: 20px;
  font-weight: 600;
  color: var(--text-primary);
  list-style: none;
  position: relative;
  z-index: 2;
  transition: background-color 120ms;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::marker { content: ""; }
.faq-item summary:hover { background: var(--control-fill-hover); }
.faq-item summary:active { background: var(--control-fill-press); }
.faq-item summary:focus-visible {
  outline: 2px solid var(--stroke-focus);
  outline-offset: -2px;
  border-radius: var(--radius-card);
}

.faq-item .chev {
  flex-shrink: 0;
  color: var(--text-secondary);
  transition: transform 200ms cubic-bezier(.55,.55,0,1);
}
.faq-item[open] .chev { transform: rotate(180deg); }

.faq-body {
  padding: 0 20px 18px;
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--stroke-divider);
  margin-top: -1px;
}
.faq-body p {
  margin: 14px 0 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 22px;
}
.faq-body p:first-child { margin-top: 14px; }

/* =============================================================
   Privacy callout — WinUI InfoBar
   ============================================================= */
.privacy-callout {
  position: relative;
  background: var(--card-fill);
  border: 1px solid var(--stroke-card);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.privacy-callout::before {
  /* InfoBar accent stripe on the left */
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--accent-base);
}
.privacy-callout .glyph {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: var(--radius-card);
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--accent-base) 18%, transparent),
      color-mix(in srgb, var(--accent-base) 6%, transparent));
  color: var(--accent-on-mica);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  border: 1px solid color-mix(in srgb, var(--accent-base) 16%, transparent);
}
.privacy-callout .glyph svg { width: 20px; height: 20px; }
.privacy-callout h3 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.privacy-callout p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 20px;
}

/* =============================================================
   Footer
   ============================================================= */
footer {
  border-top: 1px solid var(--stroke-divider);
  padding: 28px 0 36px;
  margin-top: 24px;
  color: var(--text-tertiary);
  font-size: 12px;
  line-height: 16px;
  background: var(--layer-2);
  -webkit-backdrop-filter: var(--acrylic-blur);
  backdrop-filter: var(--acrylic-blur);
}
footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}
footer a { color: var(--text-secondary); }
footer a:hover { color: var(--text-primary); }
.footer-links { display: flex; gap: 4px; flex-wrap: wrap; }
.footer-links a {
  padding: 4px 10px;
  border-radius: var(--radius-control);
  transition: background-color 120ms;
}
.footer-links a:hover { background: var(--control-fill-hover); text-decoration: none; }

/* =============================================================
   Privacy page typography (.prose)
   ============================================================= */
.prose {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 32px 48px;
}
.prose h1 {
  font-family: "Segoe UI Variable Display", "Segoe UI Variable", sans-serif;
  font-size: 40px;
  line-height: 52px;
  font-weight: 600;
  letter-spacing: -0.018em;
  margin: 0 0 4px;
  font-variation-settings: "wght" 600, "opsz" 28;
}
.prose .meta {
  color: var(--text-tertiary);
  font-size: 12px;
  margin: 0 0 32px;
}
.prose h2 {
  font-size: 20px;
  line-height: 28px;
  font-weight: 600;
  margin: 40px 0 12px;
  letter-spacing: -0.005em;
  color: var(--text-primary);
}
.prose p { margin: 0 0 16px; color: var(--text-secondary); font-size: 14px; line-height: 22px; }
.prose strong { color: var(--text-primary); font-weight: 600; }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 16px; color: var(--text-secondary); }
.prose li { margin-bottom: 6px; }

.prose table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 12px 0 24px;
  font-size: 13px;
  background: var(--card-fill);
  border: 1px solid var(--stroke-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.prose th, .prose td {
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--stroke-divider);
  color: var(--text-secondary);
}
.prose tr:last-child td { border-bottom: 0; }
.prose th {
  background: var(--card-fill-secondary);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.prose .summary {
  position: relative;
  background: var(--card-fill);
  border: 1px solid var(--stroke-card);
  border-radius: var(--radius-card);
  padding: 16px 20px 16px 24px;
  margin: 24px 0 32px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.prose .summary::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--accent-base);
}
.prose .summary p { margin: 0; color: var(--text-primary); }

/* =============================================================
   Reveal-on-scroll (added by JS — class applied on intersect)
   ============================================================= */
.fade-in {
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 500ms cubic-bezier(.16,1,.3,1),
    transform 500ms cubic-bezier(.16,1,.3,1);
}
.fade-in.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0ms !important;
    transition-duration: 0ms !important;
  }
  .fade-in { opacity: 1; transform: none; }
}

/* =============================================================
   Responsive tweaks
   ============================================================= */
@media (max-width: 720px) {
  .container { padding: 0 20px; }
  .nav-links a:not(.btn) { padding: 6px 8px; }
  .nav-links { gap: 0; }
  .hero { padding: 64px 0 48px; }
  section { padding: 56px 0; }
  .feature { padding: 18px; }
  .install-card { padding: 20px; }
}