/* XNight landing — night theme */
:root {
  --bg: #07070c;
  --bg-2: #0c0c14;
  --surface: #11111b;
  --surface-2: #171724;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #f3f2fa;
  --muted: #a3a1b8;
  --accent: #8b7bff;
  --accent-2: #b5aaff;
  --accent-ink: #0b0918;
  --moon: #eeeaff;
  --ok: #4ade80;
  --radius: 20px;
  --radius-sm: 12px;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --display: 'Unbounded', 'Inter', system-ui, sans-serif;
  --ease: cubic-bezier(.2, .8, .2, 1);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 400 16px/1.6 var(--font); -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; font-family: var(--display); font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; text-wrap: balance; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 8px; }

.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: 12px; top: -48px; z-index: 100; background: var(--accent); color: var(--accent-ink); padding: 8px 14px; border-radius: 10px; font-weight: 600; }
.skip:focus { top: 12px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 18px; border-radius: 999px;
  font: 600 15px/1 var(--font); cursor: pointer; white-space: nowrap;
  border: 1px solid transparent; transition: transform .15s var(--ease), background .2s, border-color .2s, box-shadow .2s;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 8px 30px -8px rgba(139, 123, 255, .7); }
.btn-primary:hover { background: var(--accent-2); }
.btn-ghost { border-color: var(--line-2); color: var(--text); background: rgba(255,255,255,.02); }
.btn-ghost:hover { border-color: rgba(255,255,255,.3); background: rgba(255,255,255,.06); }
.btn-lg { min-height: 52px; padding: 0 26px; font-size: 16px; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 50; transition: background .25s, border-color .25s; border-bottom: 1px solid transparent; }
.nav.is-scrolled { background: rgba(7, 7, 12, .78); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom-color: var(--line); }
.nav-row { display: flex; align-items: center; gap: 20px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font: 600 18px/1 var(--display); letter-spacing: -0.02em; }
.brand img { border-radius: 9px; }
.nav-links { display: none; gap: 28px; margin-left: 24px; }
.nav-links a { color: var(--muted); font-weight: 500; font-size: 15px; transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { margin-left: auto; display: flex; gap: 8px; }
.nav-cta .btn-ghost { display: none; }

/* Sky backdrop */
.sky { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.sky::before {
  content: ''; position: absolute; left: 50%; top: -30%; width: 1100px; height: 800px; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(139, 123, 255, .28), rgba(139, 123, 255, .06) 60%, transparent);
  filter: blur(10px);
}
.sky::after {
  content: ''; position: absolute; inset: 0; opacity: .55;
  background-image:
    radial-gradient(1px 1px at 12% 22%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 78% 14%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 64% 38%, #d9d4ff 50%, transparent 51%),
    radial-gradient(1px 1px at 32% 66%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 90% 58%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 22% 88%, #d9d4ff 50%, transparent 51%),
    radial-gradient(1px 1px at 52% 8%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 5% 50%, #fff 50%, transparent 51%);
  mask-image: linear-gradient(to bottom, #000, transparent 90%);
}

/* Hero */
.hero { position: relative; padding: 40px 0 72px; }
.hero-grid { position: relative; display: grid; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--accent-2); font-weight: 600; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(139,123,255,.2); }
.hero h1 { margin-top: 18px; font-size: clamp(40px, 9vw, 76px); font-weight: 700; }
.hero h1 em { font-style: normal; background: linear-gradient(100deg, var(--moon), var(--accent) 70%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { margin-top: 20px; max-width: 34em; color: var(--muted); font-size: 18px; }
.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-notes { margin: 26px 0 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 10px 22px; color: var(--muted); font-size: 14px; }
.hero-notes li { display: inline-flex; align-items: center; gap: 8px; }
.hero-notes li::before { content: ''; width: 16px; height: 16px; border-radius: 50%; background: rgba(74, 222, 128, .15) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234ade80' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/10px no-repeat; }

/* Mock */
.mock { position: relative; max-width: 440px; width: 100%; justify-self: center; padding: 18px 0 40px; }
.mock-window {
  position: relative; border-radius: 26px; background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line-2); box-shadow: 0 40px 80px -30px rgba(0,0,0,.8), 0 0 0 1px rgba(139,123,255,.08), 0 30px 120px -40px rgba(139,123,255,.45);
  overflow: hidden;
}
.mock-top { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.av { flex: none; width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: 15px; color: #fff; }
.av-a { background: linear-gradient(135deg, #f472b6, #8b5cf6); }
.av-b { background: linear-gradient(135deg, #22d3ee, #6366f1); width: 34px; height: 34px; font-size: 13px; }
.mock-who { display: flex; flex-direction: column; line-height: 1.25; }
.mock-who b { font-size: 15px; }
.mock-who small { color: var(--muted); font-size: 12.5px; display: inline-flex; align-items: center; gap: 6px; }
.online { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); display: inline-block; }
.mock-lock { margin-left: auto; width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; background: rgba(139,123,255,.12); color: var(--accent-2); }
.mock-lock svg { width: 16px; height: 16px; }
.mock-chat { display: flex; flex-direction: column; gap: 8px; padding: 18px 16px; min-height: 290px; }
.msg { max-width: 78%; padding: 9px 13px; border-radius: 18px; font-size: 14px; line-height: 1.4; animation: pop .5s var(--ease) both; }
.msg.in { background: #1f1f2e; border-bottom-left-radius: 6px; align-self: flex-start; }
.msg.out { background: var(--accent); color: var(--accent-ink); border-bottom-right-radius: 6px; align-self: flex-end; font-weight: 500; }
.mock-chat > :nth-child(2) { animation-delay: .25s; } .mock-chat > :nth-child(3) { animation-delay: .5s; }
.mock-chat > :nth-child(4) { animation-delay: .75s; } .mock-chat > :nth-child(5) { animation-delay: 1s; }
.gift { display: flex; align-items: center; gap: 12px; padding: 8px 14px 8px 8px; }
.gift b { display: block; font-size: 14px; } .gift small { color: var(--muted); font-size: 12px; }
.gift-art { width: 52px; height: 52px; border-radius: 14px; background: radial-gradient(circle at 50% 40%, #3b2a7a, #16112e); display: grid; place-items: center; }
.gift-art span { width: 26px; height: 26px; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #fff, #c9c0ff 45%, #8b7bff); box-shadow: 0 0 18px rgba(181,170,255,.8); }
.typing { align-self: flex-start; display: inline-flex; gap: 4px; padding: 12px 14px; border-radius: 18px; background: #1f1f2e; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); animation: blink 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .15s; } .typing i:nth-child(3) { animation-delay: .3s; }
.mock-input { display: flex; align-items: center; gap: 10px; margin: 0 12px 12px; padding: 6px 6px 6px 16px; border-radius: 999px; background: #0b0b12; border: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.mock-input b { margin-left: auto; width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; }
.mock-input svg { width: 16px; height: 16px; }
.mock-card {
  position: absolute; border-radius: 18px; background: rgba(23, 23, 36, .88); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--line-2); box-shadow: 0 20px 50px -20px rgba(0,0,0,.8); animation: float 6s ease-in-out infinite;
}
.mock-code { right: -8px; top: -4px; padding: 12px 16px 14px; min-width: 170px; }
.mock-code small { display: block; color: var(--muted); font-size: 11.5px; }
.mock-code b { display: block; margin-top: 2px; font: 600 24px/1.2 var(--display); letter-spacing: .06em; font-variant-numeric: tabular-nums; color: var(--accent-2); }
.ring { display: block; margin-top: 8px; height: 3px; border-radius: 3px; background: rgba(255,255,255,.08); overflow: hidden; }
.ring i { display: block; height: 100%; background: var(--accent); transform-origin: left; transition: transform 1s linear; }
.mock-post { left: -10px; bottom: 0; display: flex; gap: 10px; padding: 12px 14px; max-width: 250px; animation-delay: -3s; }
.mock-post b { font-size: 13.5px; } .mock-post small { color: var(--muted); font-size: 11.5px; margin-left: 6px; }
.mock-post p { font-size: 13px; margin-top: 2px; }

/* Sections */
.section { position: relative; padding: 72px 0; }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section h2 { margin-top: 12px; font-size: clamp(30px, 5.5vw, 46px); }
.section-sub { margin-top: 14px; color: var(--muted); font-size: 17px; }

/* Bento */
.bento { display: grid; gap: 14px; grid-template-columns: 1fr; }
.tile {
  position: relative; padding: 24px; border-radius: var(--radius); background: var(--surface);
  border: 1px solid var(--line); overflow: hidden; transition: border-color .25s, transform .25s var(--ease);
}
.tile:hover { border-color: rgba(139,123,255,.35); transform: translateY(-2px); }
.tile h3 { margin-top: 18px; font-size: 19px; }
.tile p { margin-top: 8px; color: var(--muted); font-size: 15px; }
.ico { width: 44px; height: 44px; border-radius: 13px; display: grid; place-items: center; background: rgba(139,123,255,.12); color: var(--accent-2); border: 1px solid rgba(139,123,255,.2); }
.ico svg { width: 22px; height: 22px; }
.tile-chat { display: flex; flex-direction: column; gap: 6px; margin-top: 20px; }
.tile-chat .b { max-width: 70%; padding: 8px 12px; border-radius: 16px; font-size: 13.5px; }
.tile-chat .in { background: #1f1f2e; align-self: flex-start; border-bottom-left-radius: 5px; }
.tile-chat .out { background: var(--accent); color: var(--accent-ink); align-self: flex-end; border-bottom-right-radius: 5px; font-weight: 500; }
.tile-gift { background: radial-gradient(120% 90% at 100% 0%, rgba(139,123,255,.18), transparent 55%), var(--surface); }
.tile-premium { background: radial-gradient(120% 90% at 0% 100%, rgba(250,204,21,.12), transparent 55%), var(--surface); }
.tile-premium .ico { color: #facc15; background: rgba(250,204,21,.1); border-color: rgba(250,204,21,.22); }

/* Security */
.sec-grid { display: grid; gap: 40px; }
.steps { list-style: none; counter-reset: s; margin: 32px 0 0; padding: 0; display: grid; gap: 14px; }
.steps li { counter-increment: s; position: relative; padding: 14px 16px 14px 60px; border-radius: 16px; background: var(--bg-2); border: 1px solid var(--line); }
.steps li::before { content: counter(s); position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; background: var(--accent); color: var(--accent-ink); font: 700 15px/1 var(--display); }
.steps b { display: block; font-size: 15.5px; } .steps span { color: var(--muted); font-size: 14.5px; }
.sec-list { list-style: none; margin: 0; padding: 8px; border-radius: 24px; background: var(--surface); border: 1px solid var(--line); display: grid; }
.sec-list li { display: flex; gap: 14px; padding: 18px; border-radius: 16px; }
.sec-list li + li { border-top: 1px solid var(--line); border-radius: 0; }
.sec-list b { font-size: 16px; } .sec-list p { color: var(--muted); font-size: 14.5px; margin-top: 4px; }
.ok { flex: none; width: 28px; height: 28px; border-radius: 9px; background: rgba(74,222,128,.12) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234ade80' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/14px no-repeat; }

/* FAQ */
.faq-wrap { max-width: 820px; }
.faq { display: grid; gap: 10px; }
.faq details { border-radius: 16px; background: var(--surface); border: 1px solid var(--line); transition: border-color .2s; }
.faq details[open] { border-color: rgba(139,123,255,.3); }
.faq summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 20px; font-weight: 600; font-size: 16px; min-height: 44px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ''; flex: none; width: 22px; height: 22px; border-radius: 50%; background: rgba(255,255,255,.06) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23b5aaff' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E") center/12px no-repeat; transition: transform .25s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 20px 18px; color: var(--muted); font-size: 15px; }

/* CTA */
.cta { position: relative; overflow: hidden; text-align: center; padding: 64px 24px; border-radius: 28px; background: linear-gradient(180deg, #14122a, var(--surface)); border: 1px solid rgba(139,123,255,.25); display: flex; flex-direction: column; align-items: center; }
.cta > * { position: relative; }
.cta img { border-radius: 16px; box-shadow: 0 0 60px rgba(139,123,255,.5); }
.cta h2 { margin-top: 22px; }
.cta p { margin: 12px 0 28px; color: var(--muted); font-size: 17px; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 28px 0 40px; }
.foot-row { display: flex; flex-direction: column; gap: 18px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.foot-links a, .copy { color: var(--muted); font-size: 14px; }
.foot-links a:hover { color: var(--text); }

/* Motion */
@keyframes pop { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes blink { 0%, 80%, 100% { opacity: .3; } 40% { opacity: 1; } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* Breakpoints */
@media (min-width: 640px) {
  .nav-cta .btn-ghost { display: inline-flex; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .tile-wide { grid-column: span 2; }
  .foot-row { flex-direction: row; align-items: center; justify-content: space-between; }
}
@media (min-width: 900px) {
  .nav-links { display: flex; }
  .hero { padding: 64px 0 100px; }
  .hero-grid { grid-template-columns: 1.1fr .9fr; }
  .mock { justify-self: end; }
  .section { padding: 96px 0; }
  .bento { grid-template-columns: repeat(3, 1fr); }
  .tile-wide { grid-column: span 2; grid-row: span 1; }
  .sec-grid { grid-template-columns: 1fr 1fr; align-items: center; gap: 64px; }
}
@media (max-width: 420px) {
  .nav-cta .btn-primary { padding: 0 14px; font-size: 14px; }
  .mock-code { right: 0; min-width: 150px; }
  .mock-post { left: 0; }
  .hero-actions .btn { width: 100%; }
}