/* ==========================================================================
   ClipVD — Universal Dark Glass & Neon Visual Language
   --------------------------------------------------------------------------
   - Canvas: deep navy / night blue
   - Surfaces: translucent glass, 1px hairline borders, 16-24px radii
   - Accents: cyan / electric blue / violet, used as glow, never as flat fill
   - Depth: color glows and diffuse (never hard black) shadows
   ========================================================================== */

/* ---------------------------------------------------------------
   1. Tokens
   --------------------------------------------------------------- */
:root {
  /* Canvas */
  --canvas-deep: #080A16;
  --canvas: #0E1220;
  --canvas-top: #191A36;
  --canvas-veil: rgba(8, 10, 22, 0.72);

  /* Glass surfaces */
  --surface: rgba(255, 255, 255, 0.045);
  --surface-raised: rgba(255, 255, 255, 0.072);
  --surface-sunken: rgba(6, 9, 22, 0.5);
  --hairline: rgba(255, 255, 255, 0.1);
  --hairline-strong: rgba(184, 237, 255, 0.24);

  /* Neon accents */
  --cyan: #38d9ff;
  --electric: #4d80ff;
  --violet: #9e70ff;
  --glow-text: #b8edff;

  /* Semantic */
  --success: #59d69a;
  --warning: #f4b942;
  --danger: #ff6b8a;

  /* Text */
  --text: #f4f8ff;
  --text-2: #aab8d8;
  --text-3: #7b8aad;

  /* Radii */
  --r-xs: 10px;
  --r-sm: 14px;
  --r-md: 18px;
  --r-lg: 24px;
  --r-pill: 999px;

  /* Gradients */
  --grad-neon: linear-gradient(120deg, var(--cyan) 0%, var(--electric) 52%, var(--violet) 100%);
  --grad-action: linear-gradient(135deg, #6ee7ff 0%, var(--cyan) 32%, var(--electric) 100%);
  --grad-title: linear-gradient(100deg, #ffffff 0%, #d6ecff 34%, var(--cyan) 66%, var(--electric) 100%);
  --grad-hairline: linear-gradient(120deg, rgba(56, 217, 255, 0.55), rgba(158, 112, 255, 0.35), rgba(56, 217, 255, 0));

  /* Diffuse + neon shadows (never opaque black) */
  --shadow-card: 0 32px 70px -42px rgba(11, 16, 44, 0.95), 0 2px 0 0 rgba(255, 255, 255, 0.03) inset;
  --shadow-lift: 0 40px 90px -40px rgba(20, 34, 92, 0.9), 0 0 44px -18px rgba(56, 217, 255, 0.45);
  --shadow-cyan: 0 0 0 1px rgba(56, 217, 255, 0.22), 0 22px 50px -26px rgba(56, 217, 255, 0.65);
  --shadow-violet: 0 0 0 1px rgba(158, 112, 255, 0.22), 0 22px 50px -26px rgba(158, 112, 255, 0.6);
  --shadow-halo: 0 0 34px -6px rgba(56, 217, 255, 0.5);

  /* Rhythm */
  --maxw: 1240px;
  --gutter: 24px;
  --section-y: 104px;

  /* Type */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.68, 0.28, 1);
  --nav-h: 74px;
}

/* ---------------------------------------------------------------
   2. Reset & base
   --------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 28px);
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  color: var(--text);
  background: var(--canvas);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, canvas { display: block; max-width: 100%; }

a { color: var(--glow-text); text-decoration: none; }

a:hover { color: #fff; }

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.022em;
  color: var(--text);
  text-wrap: balance;
}

p { text-wrap: pretty; }

ul { list-style: none; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* Accessibility helpers */
.skip-link {
  position: absolute;
  top: -60px;
  left: 16px;
  z-index: 80;
  padding: 12px 18px;
  border-radius: var(--r-pill);
  background: var(--grad-action);
  color: #05121f;
  font-weight: 700;
  transition: top 0.22s var(--ease);
}

.skip-link:focus { top: 14px; color: #05121f; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection { background: rgba(56, 217, 255, 0.32); color: #fff; }

/* ---------------------------------------------------------------
   3. Canvas, aurora and glow field
   --------------------------------------------------------------- */
.canvas-layer,
.aurora-canvas,
.reading-progress {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.canvas-layer {
  z-index: -3;
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(77, 128, 255, 0.24), transparent 62%),
    radial-gradient(900px 560px at 88% 4%, rgba(158, 112, 255, 0.2), transparent 60%),
    radial-gradient(1200px 720px at 50% 108%, rgba(56, 217, 255, 0.14), transparent 66%),
    linear-gradient(178deg, var(--canvas-top) 0%, var(--canvas) 46%, var(--canvas-deep) 100%);
}

/* Fine technical grid, kept extremely subtle */
.canvas-layer::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(184, 237, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 237, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(120% 80% at 50% 0%, #000 0%, transparent 78%);
}

.aurora-canvas { z-index: -2; opacity: 0.9; }

.reading-progress {
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 60;
  background: var(--grad-neon);
  transform: scaleX(0);
  transform-origin: 0 50%;
  box-shadow: var(--shadow-halo);
}

/* Floating glass orbs */
.orb {
  position: fixed;
  z-index: -1;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.4;
  pointer-events: none;
  animation: drift 26s var(--ease) infinite alternate;
}

.orb-cyan { top: -140px; left: -120px; background: radial-gradient(circle, rgba(56, 217, 255, 0.55), transparent 68%); }
.orb-violet { top: 38%; right: -180px; background: radial-gradient(circle, rgba(158, 112, 255, 0.5), transparent 68%); animation-delay: -8s; }
.orb-electric { bottom: -180px; left: 26%; background: radial-gradient(circle, rgba(77, 128, 255, 0.45), transparent 68%); animation-delay: -16s; }

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(40px, -46px, 0) scale(1.12); }
}

/* ---------------------------------------------------------------
   4. Layout primitives
   --------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { position: relative; padding-block: var(--section-y); }
.section-tight { padding-block: 64px; }

.section-head {
  max-width: 760px;
  margin-bottom: 44px;
}

.section-head.is-center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--glow-text);
}

.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px 2px rgba(56, 217, 255, 0.85);
  animation: pulse 2.6s var(--ease) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.82); }
}

.section-title {
  margin-top: 18px;
  font-size: clamp(30px, 4vw, 46px);
}

.section-sub {
  margin-top: 16px;
  font-size: 17.5px;
  color: var(--text-2);
  line-height: 1.75;
}

.lead { font-size: 18.5px; color: var(--text-2); line-height: 1.75; }

.gradient-text {
  background: var(--grad-title);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.mono { font-family: var(--font-mono); font-size: 0.9em; letter-spacing: 0.01em; }

.divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, rgba(184, 237, 255, 0.22), transparent);
}

/* Three column editorial grids separated by fine steel lines */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.grid-ruled { position: relative; }

.grid-ruled > .cell {
  padding: 26px 24px;
  border-top: 1px solid rgba(184, 237, 255, 0.14);
}

.grid-ruled > .cell + .cell { border-left: 1px solid rgba(184, 237, 255, 0.09); }

/* ---------------------------------------------------------------
   5. Glass surfaces
   --------------------------------------------------------------- */
.glass {
  position: relative;
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  background: linear-gradient(158deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.026) 58%, rgba(255, 255, 255, 0.045));
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(16px) saturate(130%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  overflow: hidden;
}

/* Top highlight: light catching the edge of the glass */
.glass::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  opacity: 0.55;
}

.glass-pad { padding: 28px; }

/* Tinted internal glow, one accent per surface */
.glass[data-glow="cyan"]::after,
.glass[data-glow="violet"]::after,
.glass[data-glow="electric"]::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  top: -130px;
  right: -110px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  pointer-events: none;
}

.glass[data-glow="cyan"]::after { background: radial-gradient(circle, rgba(56, 217, 255, 0.5), transparent 70%); }
.glass[data-glow="violet"]::after { background: radial-gradient(circle, rgba(158, 112, 255, 0.48), transparent 70%); }
.glass[data-glow="electric"]::after { background: radial-gradient(circle, rgba(77, 128, 255, 0.5), transparent 70%); }

.glass-hover { transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease); }

.glass-hover:hover {
  transform: translateY(-4px);
  border-color: var(--hairline-strong);
  box-shadow: var(--shadow-lift);
}

/* ---------------------------------------------------------------
   6. Pills, badges, tags
   --------------------------------------------------------------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--hairline);
  background: rgba(255, 255, 255, 0.035);
  color: var(--text-2);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.pill:hover { color: var(--text); border-color: var(--hairline-strong); }

.pill.is-active {
  color: #04101c;
  border-color: transparent;
  background: var(--grad-neon);
  box-shadow: var(--shadow-cyan);
}

.pill.is-ghost { background: transparent; }

.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: var(--r-pill);
  color: var(--glow-text);
  background: rgba(56, 217, 255, 0.1);
  border: 1px solid rgba(56, 217, 255, 0.22);
}

.tag[data-tone="violet"] { color: #d9caff; background: rgba(158, 112, 255, 0.12); border-color: rgba(158, 112, 255, 0.26); }
.tag[data-tone="electric"] { color: #cbdcff; background: rgba(77, 128, 255, 0.12); border-color: rgba(77, 128, 255, 0.26); }
.tag[data-tone="success"] { color: #b6f3d5; background: rgba(89, 214, 154, 0.12); border-color: rgba(89, 214, 154, 0.26); }
.tag[data-tone="warning"] { color: #ffe1ab; background: rgba(244, 185, 66, 0.12); border-color: rgba(244, 185, 66, 0.26); }

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }

.stamp {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}

.stamp .bar {
  width: 34px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-neon);
}

/* ---------------------------------------------------------------
   7. Buttons
   --------------------------------------------------------------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: var(--r-pill);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.005em;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.btn-primary {
  color: #05121f;
  background: var(--grad-action);
  box-shadow: 0 18px 42px -20px rgba(56, 217, 255, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.btn-primary:hover {
  color: #05121f;
  transform: translateY(-2px);
  box-shadow: 0 26px 60px -22px rgba(56, 217, 255, 0.95), 0 0 40px -6px rgba(56, 217, 255, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.btn-secondary {
  color: var(--glow-text);
  border: 1px solid rgba(184, 237, 255, 0.28);
  background: rgba(255, 255, 255, 0.04);
}

.btn-secondary:hover {
  color: #fff;
  transform: translateY(-2px);
  border-color: rgba(184, 237, 255, 0.5);
  box-shadow: 0 20px 46px -24px rgba(56, 217, 255, 0.7);
}

.btn-ghost {
  padding: 12px 18px;
  color: var(--text-2);
  font-size: 14.5px;
  font-weight: 600;
}

.btn-ghost:hover { color: var(--text); box-shadow: inset 0 0 0 1px rgba(184, 237, 255, 0.2); }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

.btn-note { margin-top: 14px; font-size: 13.5px; color: var(--text-3); font-family: var(--font-mono); }

/* ---------------------------------------------------------------
   8. Navigation
   --------------------------------------------------------------- */
.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  background: transparent;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}

.topbar.is-stuck {
  background: var(--canvas-veil);
  border-bottom-color: var(--hairline);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}

.topbar-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: 17px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: linear-gradient(150deg, rgba(56, 217, 255, 0.28), rgba(158, 112, 255, 0.28));
  border: 1px solid rgba(184, 237, 255, 0.3);
  box-shadow: var(--shadow-halo);
}

.brand-mark svg { width: 18px; height: 18px; stroke: #eaf9ff; }

.brand-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-inline: auto;
  padding: 5px;
  border-radius: var(--r-pill);
  border: 1px solid var(--hairline);
  background: rgba(12, 16, 34, 0.45);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.nav a {
  padding: 9px 16px;
  border-radius: var(--r-pill);
  color: var(--text-2);
  font-size: 14.5px;
  font-weight: 600;
  transition: color 0.22s var(--ease), background 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.nav a:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }

.nav a.is-active {
  color: #05121f;
  background: var(--grad-neon);
  box-shadow: var(--shadow-cyan);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 4px;
  border-radius: var(--r-pill);
  border: 1px solid var(--hairline);
  background: rgba(12, 16, 34, 0.45);
}

.lang-switch button {
  padding: 7px 13px;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--text-3);
  transition: color 0.22s var(--ease), background 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.lang-switch button:hover { color: var(--text); }

.lang-switch button[aria-pressed="true"] {
  color: #05121f;
  background: var(--grad-action);
  box-shadow: 0 0 24px -6px rgba(56, 217, 255, 0.85);
}

.topbar-cta { display: inline-flex; }

.menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  border: 1px solid var(--hairline);
  background: rgba(12, 16, 34, 0.5);
  place-items: center;
}

.menu-btn svg { width: 19px; height: 19px; stroke: var(--text-2); }

.drawer {
  display: none;
  border-top: 1px solid var(--hairline);
  background: rgba(9, 12, 26, 0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 18px var(--gutter) 26px;
}

.drawer.is-open { display: block; }

.drawer a {
  display: block;
  padding: 13px 4px;
  color: var(--text-2);
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.drawer .btn { width: 100%; margin-top: 16px; }

/* ---------------------------------------------------------------
   9. Hero
   --------------------------------------------------------------- */
.hero { padding-top: calc(var(--nav-h) + 74px); padding-bottom: 84px; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 56px;
  align-items: center;
}

.hero h1 {
  margin-top: 22px;
  font-size: clamp(42px, 6.4vw, 74px);
  letter-spacing: -0.035em;
}

.hero-sub { margin-top: 22px; font-size: 19px; line-height: 1.72; color: var(--text-2); max-width: 56ch; }

.hero .btn-row { margin-top: 34px; }

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-chip { min-width: 132px; }
.stat-chip dt { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-3); }
.stat-chip dd { margin-top: 7px; font-size: 20px; font-weight: 700; letter-spacing: -0.01em; color: var(--text); }
.stat-chip dd.is-glow { color: var(--glow-text); text-shadow: 0 0 26px rgba(56, 217, 255, 0.45); }

/* Overlapping circular avatars (stack of native tech) */
.stack { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 18px; margin-top: 30px; }

.avatars { display: flex; padding-left: 13px; }

.avatars .avatar {
  width: 48px;
  height: 48px;
  margin-left: -13px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--glow-text);
  background: linear-gradient(150deg, rgba(30, 40, 80, 0.95), rgba(14, 18, 32, 0.95));
  border: 2px solid rgba(14, 18, 32, 1);
  box-shadow: 0 0 0 1px rgba(184, 237, 255, 0.2), 0 12px 26px -14px rgba(56, 217, 255, 0.7);
}

.avatars .avatar svg { width: 20px; height: 20px; }

.avatars .avatar:nth-child(1) { color: #b8edff; }
.avatars .avatar:nth-child(2) { color: #cbdcff; }
.avatars .avatar:nth-child(3) { color: #d9caff; }
.avatars .avatar:nth-child(4) { color: #b6f3d5; }
.avatars .avatar:nth-child(5) { color: #ffe1ab; }

/* Overlapping stack: only the ring of each avatar may cover its neighbour */
.avatars .avatar { z-index: 1; }
.avatars .avatar:nth-child(2) { z-index: 2; }
.avatars .avatar:nth-child(3) { z-index: 3; }
.avatars .avatar:nth-child(4) { z-index: 4; }
.avatars .avatar:nth-child(5) { z-index: 5; }

.stack-text { font-size: 14px; color: var(--text-3); }
.stack-text strong { display: block; color: var(--text-2); font-size: 14.5px; font-weight: 600; }
.stack-tags { display: block; margin-top: 6px; font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(123, 138, 173, 0.9); }

/* Product preview (pure HTML/CSS mock of the app) */
.preview {
  padding: 18px;
  border-radius: var(--r-lg);
}

.preview-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--r-md);
  border: 1px solid var(--hairline);
  background: var(--surface-sunken);
}

.preview-bar .dots { display: flex; gap: 6px; }
.preview-bar .dots i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, 0.16); }
.preview-bar .dots i:first-child { background: rgba(56, 217, 255, 0.75); box-shadow: 0 0 12px rgba(56, 217, 255, 0.7); }

.preview-search {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-3);
}

.preview-search svg { width: 14px; height: 14px; stroke: var(--cyan); }

.preview-eye {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(56, 217, 255, 0.18);
  border: 1px solid rgba(56, 217, 255, 0.35);
  box-shadow: var(--shadow-halo);
}

.preview-eye svg { width: 13px; height: 13px; stroke: var(--cyan); }

.preview-list { display: grid; gap: 10px; margin-top: 14px; }

.preview-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 13px;
  align-items: center;
  padding: 13px 15px;
  border-radius: var(--r-md);
  border: 1px solid var(--hairline);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
}

.preview-row.is-selected {
  border-color: rgba(56, 217, 255, 0.4);
  box-shadow: 0 0 0 1px rgba(56, 217, 255, 0.18), 0 22px 44px -30px rgba(56, 217, 255, 0.9);
}

.preview-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: rgba(56, 217, 255, 0.12);
  border: 1px solid rgba(56, 217, 255, 0.2);
}

.preview-icon svg { width: 15px; height: 15px; stroke: var(--glow-text); }

.preview-text { font-size: 14px; color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.preview-text strong { color: var(--text); font-weight: 600; }
.preview-meta { display: block; margin-top: 4px; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.06em; color: var(--text-3); text-transform: uppercase; }

/* Frosted (privacy blur) row preview */
.is-frosted .preview-text {
  filter: blur(5px);
  opacity: 0.45;
  user-select: none;
}

.frost-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--glow-text);
  padding: 5px 9px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(56, 217, 255, 0.28);
  background: rgba(56, 217, 255, 0.1);
}

.frost-chip svg { width: 11px; height: 11px; stroke: var(--glow-text); }

.preview-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 12px 15px;
  border-radius: var(--r-md);
  border: 1px dashed rgba(184, 237, 255, 0.18);
  background: rgba(6, 9, 22, 0.35);
}

.preview-note {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  text-align: right;
}

/* ---------------------------------------------------------------
   10. Feature cards
   --------------------------------------------------------------- */
.feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.feature {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 26px;
}

.feature .icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 15px;
  border: 1px solid rgba(184, 237, 255, 0.2);
  background: linear-gradient(150deg, rgba(56, 217, 255, 0.16), rgba(158, 112, 255, 0.14));
}

.feature .icon svg { width: 21px; height: 21px; stroke: var(--glow-text); }

.feature h3 { font-size: 19px; letter-spacing: -0.015em; }
.feature p { font-size: 15px; color: var(--text-2); line-height: 1.7; }
.feature .tag-row { margin-top: auto; padding-top: 4px; }

.chapter {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 56px 0 22px;
}

.chapter .num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.chapter h3 { font-size: 21px; }
.chapter .rule { flex: 1; height: 1px; background: linear-gradient(90deg, rgba(184, 237, 255, 0.22), transparent); }

/* Compact spec list (tinted rows, generous padding) */
.spec-list { display: grid; gap: 12px; }

.spec {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--hairline);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.018));
}

.spec svg { width: 17px; height: 17px; margin-top: 4px; stroke: var(--cyan); }
.spec[data-tone="warning"] svg { stroke: var(--warning); }
.spec[data-tone="violet"] svg { stroke: var(--violet); }
.spec dt { font-weight: 700; font-size: 15.5px; }
.spec dd { margin-top: 4px; font-size: 14.5px; color: var(--text-2); line-height: 1.65; }

/* ---------------------------------------------------------------
   11. Flow / steps
   --------------------------------------------------------------- */
.flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; counter-reset: step; }

.step { position: relative; padding: 26px 24px 24px; }

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: 20px;
  right: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(184, 237, 255, 0.42);
}

.step h3 { font-size: 17.5px; margin-bottom: 10px; padding-right: 34px; }
.step p { font-size: 14.5px; color: var(--text-2); }
.step .key { margin-top: 14px; }

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  padding: 4px 8px;
  border-radius: 8px;
  border: 1px solid rgba(184, 237, 255, 0.24);
  background: rgba(255, 255, 255, 0.06);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--glow-text);
  box-shadow: 0 10px 22px -16px rgba(56, 217, 255, 0.9);
}

/* ---------------------------------------------------------------
   12. Charts (spline + gradient area) & progress bars
   --------------------------------------------------------------- */
.chart-card { padding: 26px; }

.chart-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; }

.chart-head h3 { font-size: 18px; }
.chart-head .chart-value { font-family: var(--font-mono); font-size: 26px; font-weight: 500; color: var(--glow-text); text-shadow: 0 0 30px rgba(56, 217, 255, 0.4); }
.chart-head .chart-value small { display: block; font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-3); text-shadow: none; }

.chart { margin-top: 20px; }
.chart svg { width: 100%; height: 190px; overflow: visible; }

.chart .grid-line { stroke: rgba(184, 237, 255, 0.08); stroke-width: 1; }
.chart .spline { fill: none; stroke: url(#splineStroke); stroke-width: 2.6; stroke-linecap: round; filter: drop-shadow(0 0 10px rgba(56, 217, 255, 0.55)); }
.chart .node { fill: #0e1220; stroke: var(--cyan); stroke-width: 2.2; }
.chart .node.is-peak { fill: var(--cyan); filter: drop-shadow(0 0 10px rgba(56, 217, 255, 0.9)); }

.chart-axis {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

.bars { display: grid; gap: 14px; margin-top: 20px; }

.bar-row { display: grid; gap: 8px; }
.bar-row .bar-head { display: flex; justify-content: space-between; font-size: 14px; }
.bar-row .bar-head span:last-child { font-family: var(--font-mono); font-size: 12px; color: var(--text-3); }

.bar-track {
  height: 8px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--cyan), var(--electric));
  box-shadow: 0 0 18px rgba(56, 217, 255, 0.65);
}

/* ---------------------------------------------------------------
   13. Split sections (privacy, download, donate)
   --------------------------------------------------------------- */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: center; }
.split-wide { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }

.check-list { display: grid; gap: 14px; margin-top: 26px; }

.check-list li { display: grid; grid-template-columns: 26px minmax(0, 1fr); gap: 13px; align-items: start; font-size: 15.5px; color: var(--text-2); }
.check-list li strong { color: var(--text); }
.check-list svg { width: 18px; height: 18px; margin-top: 4px; stroke: var(--success); }

.price-card { padding: 34px; text-align: center; }
.price-card .price { font-size: clamp(32px, 7.6vw, 54px); font-weight: 800; letter-spacing: -0.04em; line-height: 1.05; }
.price-card .price-cap { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-3); }
.price-list { display: grid; gap: 11px; margin: 26px 0; text-align: left; }
.price-list li { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 11px; font-size: 14.5px; color: var(--text-2); }
.price-list svg { width: 16px; height: 16px; margin-top: 5px; stroke: var(--cyan); }

.kv { display: flex; flex-wrap: wrap; gap: 10px 26px; margin-top: 20px; font-size: 14px; color: var(--text-2); }
.kv div { display: inline-flex; align-items: center; gap: 9px; }
.kv svg { width: 15px; height: 15px; stroke: var(--cyan); }

/* ---------------------------------------------------------------
   14. Documentation pages (privacy / support)
   --------------------------------------------------------------- */
.doc-hero { padding-top: calc(var(--nav-h) + 62px); padding-bottom: 48px; }

.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-3); }
.crumbs a { color: var(--text-3); }
.crumbs a:hover { color: var(--glow-text); }
.crumbs span[aria-current] { color: var(--glow-text); }

.doc-hero h1 { margin-top: 20px; font-size: clamp(34px, 5.2vw, 58px); }

.doc-meta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

.doc-layout { display: grid; grid-template-columns: 262px minmax(0, 1fr); gap: 40px; align-items: start; }

.toc { position: sticky; top: calc(var(--nav-h) + 26px); padding: 22px; }

.toc h2 { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-3); font-weight: 500; }

.toc ol { margin-top: 16px; display: grid; gap: 4px; list-style: none; counter-reset: toc; }

.toc li { counter-increment: toc; }

.toc a {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 12px;
  border-radius: var(--r-xs);
  font-size: 14px;
  color: var(--text-2);
  border-left: 2px solid transparent;
  transition: background 0.22s var(--ease), color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.toc a::before {
  content: counter(toc) ".";
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(123, 138, 173, 0.9);
}

.toc a.is-active::before { color: var(--cyan); }

.toc a:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }

.toc a.is-active {
  color: var(--glow-text);
  background: rgba(56, 217, 255, 0.09);
  border-left-color: var(--cyan);
  box-shadow: inset 0 0 24px -12px rgba(56, 217, 255, 0.5);
}

.doc-body { display: grid; gap: 20px; }

.doc-card { padding: 30px 32px; }

.doc-card h2 { font-size: 24px; letter-spacing: -0.02em; }
.doc-card h2 .n { display: inline-block; margin-right: 12px; font-family: var(--font-mono); font-size: 13px; color: var(--cyan); vertical-align: middle; }
.doc-card h3 { font-size: 17px; margin: 22px 0 8px; }
.doc-card p { margin-top: 14px; font-size: 15.5px; color: var(--text-2); line-height: 1.78; }
.doc-card ul { margin-top: 14px; display: grid; gap: 11px; }
.doc-card ul li { position: relative; padding-left: 22px; font-size: 15.5px; color: var(--text-2); line-height: 1.7; }
.doc-card ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(56, 217, 255, 0.9);
}
.doc-card strong { color: var(--text); }
.doc-card code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 2px 7px;
  border-radius: 7px;
  background: rgba(56, 217, 255, 0.1);
  border: 1px solid rgba(56, 217, 255, 0.18);
  color: var(--glow-text);
}

.callout {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 14px;
  margin-top: 20px;
  padding: 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid rgba(56, 217, 255, 0.24);
  background: linear-gradient(140deg, rgba(56, 217, 255, 0.1), rgba(158, 112, 255, 0.07));
}

.callout svg { width: 19px; height: 19px; margin-top: 3px; stroke: var(--cyan); }
.callout p { margin: 0; font-size: 15px; }
.callout[data-tone="warning"] { border-color: rgba(244, 185, 66, 0.28); background: linear-gradient(140deg, rgba(244, 185, 66, 0.1), rgba(255, 255, 255, 0.02)); }
.callout[data-tone="warning"] svg { stroke: var(--warning); }

.zero-banner { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; padding: 26px 28px; }
.zero-banner .glyph {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: linear-gradient(150deg, rgba(56, 217, 255, 0.24), rgba(158, 112, 255, 0.18));
  border: 1px solid rgba(184, 237, 255, 0.28);
  box-shadow: var(--shadow-halo);
}
.zero-banner .glyph svg { width: 26px; height: 26px; stroke: #eaf9ff; }
.zero-banner h2 { font-size: 22px; }
.zero-banner p { margin-top: 6px; font-size: 15px; color: var(--text-2); }

/* ---------------------------------------------------------------
   15. Accordion (FAQ)
   --------------------------------------------------------------- */
.faq { display: grid; gap: 12px; }

.faq-item { border-radius: var(--r-md); border: 1px solid var(--hairline); background: rgba(255, 255, 255, 0.035); overflow: hidden; transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease); }
.faq-item[open] { border-color: rgba(56, 217, 255, 0.3); box-shadow: 0 26px 54px -40px rgba(56, 217, 255, 0.9); }

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  cursor: pointer;
  font-size: 16.5px;
  font-weight: 650;
  color: var(--text);
  list-style: none;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary .chev {
  flex: none;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid rgba(184, 237, 255, 0.22);
  background: rgba(56, 217, 255, 0.08);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}

.faq-item summary .chev svg { width: 14px; height: 14px; stroke: var(--glow-text); transition: transform 0.3s var(--ease); }
.faq-item[open] summary .chev { background: var(--grad-neon); box-shadow: var(--shadow-halo); }
.faq-item[open] summary .chev svg { stroke: #05121f; transform: rotate(180deg); }

.faq-body { padding: 0 22px 22px; font-size: 15.5px; color: var(--text-2); line-height: 1.78; }
.faq-body p + p { margin-top: 12px; }
.faq-body a { border-bottom: 1px solid rgba(56, 217, 255, 0.4); }

/* ---------------------------------------------------------------
   16. Tables & forms
   --------------------------------------------------------------- */
.table-wrap { border-radius: var(--r-md); border: 1px solid var(--hairline); overflow: hidden; }

table { width: 100%; border-collapse: collapse; font-size: 15px; }

thead th {
  text-align: left;
  padding: 14px 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  background: rgba(255, 255, 255, 0.045);
  border-bottom: 1px solid var(--hairline);
}

tbody td { padding: 15px 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.06); color: var(--text-2); vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: rgba(56, 217, 255, 0.045); color: var(--text); }
tbody td:first-child { color: var(--text); font-weight: 600; white-space: nowrap; }
tbody td .keys { display: flex; flex-wrap: wrap; gap: 6px; }

.form { display: grid; gap: 18px; padding: 30px 32px; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.field { display: grid; gap: 8px; }
.field label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-3); }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(6, 9, 22, 0.55);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15.5px;
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease), background 0.22s var(--ease);
}

.field textarea { resize: vertical; min-height: 148px; line-height: 1.65; }
.field input::placeholder, .field textarea::placeholder { color: rgba(123, 138, 173, 0.75); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: rgba(56, 217, 255, 0.6);
  background: rgba(9, 14, 32, 0.75);
  box-shadow: 0 0 0 3px rgba(56, 217, 255, 0.16), 0 18px 40px -30px rgba(56, 217, 255, 0.9);
}

.field select { padding-right: 44px; text-overflow: ellipsis; appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--glow-text) 50%), linear-gradient(135deg, var(--glow-text) 50%, transparent 50%); background-position: calc(100% - 21px) 50%, calc(100% - 15px) 50%; background-size: 6px 6px, 6px 6px; background-repeat: no-repeat; }

.form-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.form-foot .hint { font-size: 13px; color: var(--text-3); max-width: 46ch; }

.status {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  border-radius: var(--r-sm);
  font-size: 15px;
  border: 1px solid rgba(89, 214, 154, 0.32);
  background: rgba(89, 214, 154, 0.1);
  color: #bff3da;
}

.status.is-visible { display: flex; }
.status[data-state="error"] { border-color: rgba(255, 107, 138, 0.34); background: rgba(255, 107, 138, 0.1); color: #ffd2dc; }
.status svg { width: 18px; height: 18px; flex: none; stroke: currentColor; }

/* ---------------------------------------------------------------
   17. Footer
   --------------------------------------------------------------- */
.footer { margin-top: 40px; border-top: 1px solid var(--hairline); background: linear-gradient(180deg, rgba(8, 10, 22, 0), rgba(8, 10, 22, 0.72)); }

.footer-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) repeat(3, minmax(0, 1fr)); gap: 36px; padding-block: 56px; }
.footer h2 { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-3); font-weight: 500; }
.footer ul { margin-top: 16px; display: grid; gap: 11px; }
.footer ul a { color: var(--text-2); font-size: 14.5px; }
.footer ul a:hover { color: var(--glow-text); }
.footer .about { margin-top: 16px; font-size: 14.5px; color: var(--text-2); line-height: 1.7; max-width: 40ch; }
.footer-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; padding-block: 22px; border-top: 1px solid rgba(255, 255, 255, 0.07); font-size: 13.5px; color: var(--text-3); }

.platform-row { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------------------------------------------------------------
   18. Reveal on scroll
   --------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------------------------------------------------------------
   19. Responsive
   --------------------------------------------------------------- */
@media (max-width: 1080px) {
  :root { --section-y: 84px; --gutter: 22px; }
  .nav { display: none; }
  .menu-btn { display: grid; }
  .topbar-cta { display: none; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 44px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .doc-layout { grid-template-columns: minmax(0, 1fr); }
  .toc { position: static; }
  .toc ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 780px) {
  :root { --section-y: 68px; --gutter: 18px; }
  body { font-size: 16.5px; }
  .hero { padding-top: calc(var(--nav-h) + 46px); }
  .hero-sub { font-size: 17.5px; }
  .hero .btn-row .btn { width: 100%; }
  .grid-2, .grid-3, .grid-4, .feature-grid, .flow, .split, .split-wide, .form-row, .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .grid-ruled > .cell + .cell { border-left: 0; }
  .toc ol { grid-template-columns: minmax(0, 1fr); }
  .doc-card, .glass-pad, .chart-card, .price-card { padding: 22px; }
  .form { padding: 22px; }
  .section-title { font-size: clamp(27px, 8vw, 36px); }
  .hero-stats { gap: 18px; }
  .stat-chip { min-width: 104px; }
  .zero-banner { padding: 22px; }
}

/* ---------------------------------------------------------------
   20. Reduced motion & print
   --------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .aurora-canvas, .orb { display: none; }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .topbar, .aurora-canvas, .orb, .canvas-layer, .footer, .toc, .reading-progress { display: none; }
  body { background: #fff; color: #111; }
  .glass, .doc-card { border-color: #ccc; background: none; box-shadow: none; backdrop-filter: none; }
  .doc-card p, .doc-card li { color: #333; }
}