/* =========================================================================
   landing-v2.css — "Signal" marketing design system (NEW)
   Self-contained, namespaced `lv2-*` / `--lv2-*` so the app theme is untouched.
   Light premium site + a dramatic dark aurora hero band.
   Fonts: Sora (display/UI) + JetBrains Mono (technical accents).
   ========================================================================= */

:root {
  --lv2-bg: #f8f9ff;
  --lv2-bg-tint: #eef1fb;
  --lv2-surface: #ffffff;
  --lv2-ink: #0a0e1a;          /* dark hero band */
  --lv2-ink-2: #111729;
  --lv2-text: #0e1426;
  --lv2-text-soft: #414960;
  --lv2-body: #4a5570;
  --lv2-muted: #8b93a8;
  --lv2-line: #e7eaf4;
  --lv2-line-strong: #d6dbea;
  --lv2-primary: #3f6dfb;       /* electric inbox blue */
  --lv2-primary-2: #6f8cff;
  --lv2-violet: #9a6bff;
  --lv2-signal: #1fcf8e;        /* signal green = lands in inbox */
  --lv2-signal-deep: #0fae73;
  --lv2-danger: #ff5d5d;
  --lv2-on-dark: #eef1fb;
  --lv2-on-dark-soft: #aab2cc;
  --lv2-radius: 18px;
  --lv2-radius-sm: 12px;
  --lv2-radius-pill: 999px;
  --lv2-shadow-sm: 0 1px 2px rgba(16, 23, 41, .06), 0 4px 14px rgba(16, 23, 41, .05);
  --lv2-shadow: 0 2px 6px rgba(16, 23, 41, .06), 0 18px 40px rgba(16, 23, 41, .08);
  --lv2-shadow-blue: 0 12px 34px rgba(63, 109, 251, .32);
  --lv2-font: "Sora", ui-sans-serif, system-ui, sans-serif;
  --lv2-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;
  --lv2-maxw: 1180px;
}

/* ---- reset-ish for marketing pages ---- */
.lv2-page { background: var(--lv2-bg); color: var(--lv2-text); font-family: var(--lv2-font); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
.lv2-page *, .lv2-nav *, .lv2-foot * { box-sizing: border-box; }
/* The app theme forces Fraunces (serif) on every h1/h2/h3 — override it so the
   "Signal" marketing system keeps its own Sora display type and clean break. */
.lv2-page :is(h1, h2, h3, h4),
.lv2-nav :is(h1, h2, h3, h4),
.lv2-foot :is(h1, h2, h3, h4) { font-family: var(--lv2-font); font-feature-settings: normal; font-optical-sizing: auto; }
.lv2-wrap { max-width: var(--lv2-maxw); margin: 0 auto; padding: 0 24px; }
.lv2-eyebrow { font-family: var(--lv2-mono); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--lv2-primary); font-weight: 600; }

/* ============================ NAV ============================ */
.lv2-nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(18px) saturate(160%); background: rgba(248, 249, 255, .72); border-bottom: 1px solid var(--lv2-line); }
.lv2-nav-inner { max-width: var(--lv2-maxw); margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; gap: 28px; }
.lv2-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; letter-spacing: -.01em; color: var(--lv2-text); text-decoration: none; }
.lv2-logo-mark { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; color: #fff; background: linear-gradient(135deg, var(--lv2-primary), var(--lv2-violet)); box-shadow: var(--lv2-shadow-blue); }
.lv2-logo-mark .material-icons { font-size: 18px; }
.lv2-nav-links { display: flex; align-items: center; gap: 24px; margin-left: 8px; }
.lv2-nav-links a { color: var(--lv2-body); text-decoration: none; font-size: 14.5px; font-weight: 500; transition: color .15s; }
.lv2-nav-links a:hover, .lv2-nav-links a.is-active { color: var(--lv2-text); }
.lv2-nav-spacer { flex: 1; }
.lv2-nav-cta { display: flex; align-items: center; gap: 12px; }
.lv2-link-quiet { color: var(--lv2-body); text-decoration: none; font-weight: 600; font-size: 14.5px; }
.lv2-link-quiet:hover { color: var(--lv2-text); }
@media (max-width: 860px) { .lv2-nav-links { display: none; } }

/* ============================ BUTTONS ============================ */
.lv2-btn { display: inline-flex; align-items: center; gap: 8px; font-family: var(--lv2-font); font-weight: 600; font-size: 15px; padding: 12px 22px; border-radius: var(--lv2-radius-pill); border: 1px solid transparent; cursor: pointer; text-decoration: none; transition: transform .16s ease, box-shadow .16s ease, background .16s; white-space: nowrap; }
.lv2-btn .material-icons { font-size: 18px; }
.lv2-btn-primary { background: linear-gradient(135deg, var(--lv2-primary), #5573ff); color: #fff; box-shadow: var(--lv2-shadow-blue); }
.lv2-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(63, 109, 251, .42); }
.lv2-btn-ghost { background: var(--lv2-surface); color: var(--lv2-text); border-color: var(--lv2-line-strong); box-shadow: var(--lv2-shadow-sm); }
.lv2-btn-ghost:hover { transform: translateY(-2px); border-color: var(--lv2-primary); color: var(--lv2-primary); }
.lv2-btn-onDark { background: rgba(255,255,255,.10); color: #fff; border-color: rgba(255,255,255,.18); backdrop-filter: blur(6px); }
.lv2-btn-onDark:hover { transform: translateY(-2px); background: rgba(255,255,255,.18); }

/* ============================ HERO (dark aurora band) ============================ */
.lv2-hero { position: relative; background: var(--lv2-ink); color: var(--lv2-on-dark); overflow: hidden; border-bottom: 1px solid rgba(255,255,255,.06); }
.lv2-hero::before { /* aurora mesh */
  content: ""; position: absolute; inset: -40% -10% auto -10%; height: 120%;
  background:
    radial-gradient(45% 55% at 18% 22%, rgba(63,109,251,.55), transparent 60%),
    radial-gradient(40% 50% at 82% 14%, rgba(154,107,255,.45), transparent 62%),
    radial-gradient(42% 48% at 60% 88%, rgba(31,207,142,.30), transparent 60%);
  filter: blur(14px); opacity: .9; animation: lv2-aurora 16s ease-in-out infinite alternate; pointer-events: none;
}
.lv2-hero::after { /* grain + grid */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 48px 48px; mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 75%);
}
@keyframes lv2-aurora { from { transform: translateX(-3%) translateY(-2%) scale(1.02); } to { transform: translateX(4%) translateY(3%) scale(1.08); } }
.lv2-hero-inner { position: relative; z-index: 2; max-width: 920px; margin: 0 auto; padding: 96px 24px 104px; text-align: center; }
.lv2-pill { display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: var(--lv2-radius-pill); background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14); font-size: 12.5px; font-weight: 500; color: var(--lv2-on-dark); backdrop-filter: blur(6px); }
.lv2-pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--lv2-signal); box-shadow: 0 0 0 3px rgba(31,207,142,.25); animation: lv2-pulse 2.4s ease-in-out infinite; }
@keyframes lv2-pulse { 50% { box-shadow: 0 0 0 6px rgba(31,207,142,0); } }
.lv2-h1 { font-size: clamp(40px, 6.4vw, 78px); line-height: 1.02; letter-spacing: -.03em; font-weight: 700; margin: 22px 0 0; color: #fff; }
.lv2-h1 .grad { background: linear-gradient(100deg, #8fb0ff, #c9b3ff 55%, #6ff0bf); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lv2-hero-sub { font-size: clamp(16px, 1.5vw, 19px); line-height: 1.65; color: var(--lv2-on-dark-soft); max-width: 620px; margin: 22px auto 0; }
.lv2-hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.lv2-hero-foot { margin-top: 22px; font-family: var(--lv2-mono); font-size: 12px; letter-spacing: .04em; color: var(--lv2-on-dark-soft); }

/* inbox visual strip under hero */
.lv2-hero-strip { position: relative; z-index: 2; max-width: 980px; margin: -36px auto 0; padding: 0 24px; }
.lv2-strip-card { background: rgba(17,23,41,.72); border: 1px solid rgba(255,255,255,.10); border-radius: var(--lv2-radius); backdrop-filter: blur(10px); box-shadow: 0 30px 70px rgba(0,0,0,.4); overflow: hidden; }
.lv2-strip-head { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid rgba(255,255,255,.08); }
.lv2-strip-head .d { width: 11px; height: 11px; border-radius: 50%; background: rgba(255,255,255,.18); }
.lv2-strip-head .t { margin-left: 8px; font-family: var(--lv2-mono); font-size: 12px; color: var(--lv2-on-dark-soft); }
.lv2-strip-rows { padding: 6px 0; }
.lv2-row { display: grid; grid-template-columns: 24px 1fr auto; gap: 12px; align-items: center; padding: 11px 18px; color: var(--lv2-on-dark); font-size: 14px; }
.lv2-row + .lv2-row { border-top: 1px solid rgba(255,255,255,.05); }
.lv2-row .ic { color: var(--lv2-signal); display: grid; place-items: center; }
.lv2-row .ic .material-icons { font-size: 18px; }
.lv2-row .meta { color: var(--lv2-on-dark-soft); font-size: 12.5px; }
.lv2-tag { font-family: var(--lv2-mono); font-size: 11px; padding: 3px 9px; border-radius: var(--lv2-radius-pill); background: rgba(31,207,142,.14); color: #5fe3b3; border: 1px solid rgba(31,207,142,.25); }

/* ============================ SECTION SCAFFOLD ============================ */
.lv2-section { padding: 104px 0; }
.lv2-section.tight { padding: 72px 0; }
.lv2-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.lv2-head h2 { font-size: clamp(30px, 4vw, 46px); line-height: 1.08; letter-spacing: -.025em; font-weight: 700; color: var(--lv2-text); margin: 14px 0 0; }
.lv2-head p { font-size: 17px; line-height: 1.6; color: var(--lv2-body); margin: 16px 0 0; }

/* stat band */
.lv2-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; max-width: 920px; margin: 0 auto; }
.lv2-stat { text-align: center; padding: 22px 14px; border-radius: var(--lv2-radius); background: var(--lv2-surface); border: 1px solid var(--lv2-line); box-shadow: var(--lv2-shadow-sm); }
.lv2-stat .v { font-size: 30px; font-weight: 700; letter-spacing: -.02em; color: var(--lv2-text); }
.lv2-stat .v.sig { color: var(--lv2-signal-deep); }
.lv2-stat .l { font-family: var(--lv2-mono); font-size: 11.5px; letter-spacing: .04em; color: var(--lv2-muted); margin-top: 6px; text-transform: uppercase; }
@media (max-width: 760px) { .lv2-stats { grid-template-columns: repeat(2, 1fr); } }

/* feature grid */
.lv2-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 980px) { .lv2-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .lv2-grid { grid-template-columns: 1fr; } }
.lv2-card { position: relative; padding: 28px 26px; border-radius: var(--lv2-radius); background: var(--lv2-surface); border: 1px solid var(--lv2-line); box-shadow: var(--lv2-shadow-sm); transition: transform .2s ease, box-shadow .2s ease, border-color .2s; overflow: hidden; }
.lv2-card:hover { transform: translateY(-4px); box-shadow: var(--lv2-shadow); border-color: var(--lv2-line-strong); }
.lv2-card-ic { width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center; color: var(--lv2-primary); background: linear-gradient(135deg, rgba(63,109,251,.12), rgba(154,107,255,.12)); margin-bottom: 18px; }
.lv2-card-ic .material-icons { font-size: 24px; }
.lv2-card h3 { font-size: 20px; font-weight: 600; letter-spacing: -.01em; color: var(--lv2-text); margin: 0 0 8px; }
.lv2-card p { font-size: 14.5px; line-height: 1.6; color: var(--lv2-body); margin: 0; }
.lv2-card.accent { background: linear-gradient(160deg, #0c1124, #131a30); border-color: rgba(255,255,255,.10); color: var(--lv2-on-dark); }
.lv2-card.accent h3 { color: #fff; } .lv2-card.accent p { color: var(--lv2-on-dark-soft); }
.lv2-card.accent .lv2-card-ic { color: #7ff0c0; background: rgba(31,207,142,.16); }

/* steps */
.lv2-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 760px) { .lv2-steps { grid-template-columns: 1fr; } }
.lv2-step { padding: 26px; border-radius: var(--lv2-radius); background: var(--lv2-surface); border: 1px solid var(--lv2-line); box-shadow: var(--lv2-shadow-sm); }
.lv2-step .n { font-family: var(--lv2-mono); font-size: 13px; color: var(--lv2-primary); font-weight: 600; }
.lv2-step h3 { font-size: 18px; font-weight: 600; color: var(--lv2-text); margin: 12px 0 8px; }
.lv2-step p { font-size: 14.5px; line-height: 1.6; color: var(--lv2-body); margin: 0; }

/* cta band */
.lv2-cta { position: relative; margin: 0 24px 90px; max-width: var(--lv2-maxw); margin-left: auto; margin-right: auto; border-radius: 28px; background: var(--lv2-ink); color: var(--lv2-on-dark); overflow: hidden; text-align: center; padding: 70px 24px; }
.lv2-cta::before { content: ""; position: absolute; inset: 0; background: radial-gradient(60% 80% at 50% 0%, rgba(63,109,251,.5), transparent 60%), radial-gradient(50% 70% at 80% 100%, rgba(31,207,142,.28), transparent 60%); pointer-events: none; }
.lv2-cta-inner { position: relative; z-index: 2; }
.lv2-cta h2 { font-size: clamp(28px, 4vw, 44px); letter-spacing: -.02em; font-weight: 700; color: #fff; margin: 0; }
.lv2-cta p { color: var(--lv2-on-dark-soft); margin: 14px auto 26px; max-width: 520px; font-size: 16px; }

/* ============================ FOOTER ============================ */
.lv2-foot { background: var(--lv2-ink); color: var(--lv2-on-dark-soft); padding: 64px 0 36px; border-top: 1px solid rgba(255,255,255,.06); }
.lv2-foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 32px; max-width: var(--lv2-maxw); margin: 0 auto; padding: 0 24px; }
@media (max-width: 860px) { .lv2-foot-grid { grid-template-columns: 1fr 1fr; gap: 28px; } }
.lv2-foot h4 { font-family: var(--lv2-mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--lv2-muted); margin: 0 0 14px; }
.lv2-foot a { display: block; color: var(--lv2-on-dark-soft); text-decoration: none; font-size: 14px; padding: 5px 0; transition: color .15s; }
.lv2-foot a:hover { color: #fff; }
.lv2-foot-brand p { font-size: 14px; line-height: 1.6; max-width: 280px; margin: 12px 0 0; }
.lv2-foot-bottom { max-width: var(--lv2-maxw); margin: 44px auto 0; padding: 22px 24px 0; border-top: 1px solid rgba(255,255,255,.08); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px; color: var(--lv2-muted); }

/* Blazor's focus-on-navigate sets tabindex="-1" on the first heading and focuses
   it, which trips the global [tabindex]:focus-visible ring (brand ember) from the
   app theme. Content headings here are non-interactive, so suppress that leftover
   ring — keep real focus rings on actual controls. */
.lv2-page :is(h1, h2, h3):focus,
.lv2-page :is(h1, h2, h3):focus-visible { outline: none; }

/* ============================ SCROLL REVEAL ============================ */
.lv2-reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.lv2-reveal.is-revealed { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .lv2-reveal { opacity: 1; transform: none; transition: none; } .lv2-hero::before { animation: none; } }