/* ============================================================
       VIR.GROUP — Landing
       Dark, modern, blue-cyan glow. Mirrors pro.vir.group aesthetic.
       ============================================================ */

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --bg-deep: #03061A;
      --bg-surface: #070B22;
      --bg-card: #0B112A;
      --bg-card-2: #0E1535;
      --border: rgba(106, 162, 255, 0.10);
      --border-strong: rgba(106, 162, 255, 0.22);
      --text: #E6ECFF;
      --text-muted: #8896C2;
      --text-dim: #5A6794;
      --brand: #4FACFE;
      --brand-2: #00F2FE;
      --brand-3: #6364FF;
      --accent-grad: linear-gradient(135deg, #6364FF 0%, #4FACFE 45%, #00F2FE 100%);
      --glow: 0 0 60px rgba(79, 172, 254, 0.35), 0 0 100px rgba(99, 100, 255, 0.18);
      --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.4), 0 1px 0 rgba(255,255,255,0.04) inset;
    }

    html, body {
      background: var(--bg-deep);
      color: var(--text);
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      font-size: 16px;
      line-height: 1.55;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      scroll-behavior: smooth;
    }

    body { min-height: 100vh; overflow-x: hidden; }

    /* When Flutter boots, hide landing and let Flutter take the viewport */
    body.flutter-mode .landing { display: none; }
    body.flutter-mode { overflow: hidden; }
    body.landing-mode .flutter-loading { display: none; }

    a { color: inherit; text-decoration: none; }
    button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
    img { display: block; max-width: 100%; }

    /* ---------------- Background ambient gradients ---------------- */
    body::before, body::after {
      content: '';
      position: fixed;
      pointer-events: none;
      z-index: 0;
      filter: blur(120px);
      opacity: 0.55;
    }
    body::before {
      width: 700px; height: 700px;
      top: -200px; left: -200px;
      background: radial-gradient(circle, #6364FF 0%, transparent 60%);
    }
    body::after {
      width: 800px; height: 800px;
      top: 30%; right: -300px;
      background: radial-gradient(circle, #00F2FE 0%, transparent 55%);
      opacity: 0.35;
    }

    .landing { position: relative; z-index: 1; }

    /* ---------------- Container ---------------- */
    .container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

    /* ---------------- Header ---------------- */
    header.site {
      position: sticky; top: 0; z-index: 100;
      backdrop-filter: blur(20px) saturate(140%);
      -webkit-backdrop-filter: blur(20px) saturate(140%);
      background: rgba(3, 6, 26, 0.75);
      border-bottom: 1px solid var(--border);
    }
    .site-inner {
      display: flex; align-items: center; justify-content: space-between;
      padding: 14px 0;
    }
    .brand {
      display: inline-flex; align-items: center; gap: 12px;
      font-weight: 800; font-size: 18px; letter-spacing: 0.5px;
    }
    .brand-mark {
      width: 36px; height: 36px;
      background: var(--accent-grad);
      border-radius: 10px;
      display: inline-flex; align-items: center; justify-content: center;
      font-family: 'JetBrains Mono', monospace;
      font-size: 16px; color: white; font-weight: 800;
      box-shadow: 0 6px 20px rgba(79,172,254,0.4);
    }
    .brand-text em {
      font-style: normal;
      background: var(--accent-grad);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    nav.primary {
      display: flex; gap: 28px; align-items: center;
    }
    nav.primary a {
      font-size: 14px; font-weight: 500; color: var(--text-muted);
      transition: color 0.15s;
    }
    nav.primary a:hover { color: var(--text); }

    .header-cta {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 10px 18px;
      background: var(--accent-grad);
      color: white; font-weight: 600; font-size: 14px;
      border-radius: 999px;
      transition: transform 0.15s, box-shadow 0.15s;
      box-shadow: 0 4px 14px rgba(79,172,254,0.35);
    }
    .header-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(79,172,254,0.5); }

    @media (max-width: 880px) {
      nav.primary { display: none; }
    }

    /* ---------------- Hero ---------------- */
    .hero {
      padding: 80px 0 60px;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 60px;
      align-items: center;
    }
    @media (max-width: 980px) {
      .hero-grid { grid-template-columns: 1fr; gap: 40px; }
      .hero { padding: 56px 0 32px; }
    }

    .eyebrow {
      display: inline-flex; align-items: center; gap: 10px;
      font-family: 'JetBrains Mono', monospace;
      font-size: 12px; font-weight: 500; letter-spacing: 2.5px;
      color: var(--brand);
      padding: 6px 14px; border-radius: 999px;
      background: rgba(79, 172, 254, 0.08);
      border: 1px solid rgba(79, 172, 254, 0.25);
      margin-bottom: 24px;
    }
    .eyebrow::before {
      content: ''; width: 6px; height: 6px; border-radius: 50%;
      background: var(--brand-2);
      box-shadow: 0 0 10px var(--brand-2);
    }

    h1 {
      font-size: clamp(40px, 6vw, 76px);
      line-height: 1.02;
      letter-spacing: -0.025em;
      font-weight: 900;
      margin-bottom: 24px;
    }
    h1 .grad {
      background: var(--accent-grad);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      display: inline-block;
    }
    .hero p.lead {
      font-size: 18px; color: var(--text-muted);
      max-width: 540px; margin-bottom: 32px;
    }
    .hero p.lead strong { color: var(--text); font-weight: 600; }

    .hero-cta-row {
      display: flex; gap: 16px; flex-wrap: wrap;
      margin-bottom: 32px;
    }
    .btn {
      display: inline-flex; align-items: center; gap: 10px;
      padding: 14px 24px;
      border-radius: 12px;
      font-weight: 600; font-size: 15px;
      transition: transform 0.15s, opacity 0.15s, box-shadow 0.15s, background 0.15s;
    }
    .btn-primary {
      background: var(--accent-grad); color: white;
      box-shadow: 0 8px 28px rgba(79,172,254,0.4);
    }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(79,172,254,0.5); }
    .btn-ghost {
      background: rgba(255,255,255,0.04);
      color: var(--text);
      border: 1px solid var(--border-strong);
    }
    .btn-ghost:hover { background: rgba(255,255,255,0.08); }
    .btn .arrow { transition: transform 0.2s; }
    .btn:hover .arrow { transform: translateX(3px); }

    .hero-stats {
      display: flex; gap: 28px; flex-wrap: wrap;
      padding-top: 28px; border-top: 1px solid var(--border);
    }
    .hero-stats .stat strong {
      display: block; font-size: 22px; font-weight: 800; color: var(--text);
      font-family: 'JetBrains Mono', monospace;
    }
    .hero-stats .stat span {
      font-size: 12px; color: var(--text-dim); letter-spacing: 1.5px;
      text-transform: uppercase;
    }

    /* ---- Hero visual: app mockup ---- */
    .hero-visual {
      position: relative;
      aspect-ratio: 1 / 1;
      max-width: 460px; justify-self: end;
    }
    @media (max-width: 980px) {
      .hero-visual { justify-self: center; max-width: 360px; }
    }
    .device {
      position: absolute; inset: 0;
      border-radius: 36px;
      background: linear-gradient(160deg, #0E1535 0%, #06091E 100%);
      border: 1px solid var(--border-strong);
      box-shadow: var(--shadow-card), var(--glow);
      overflow: hidden;
      padding: 18px;
      display: flex; flex-direction: column;
      transform: perspective(1200px) rotateY(-6deg) rotateX(4deg);
    }
    .device::after {
      content: ''; position: absolute; inset: 0;
      background: linear-gradient(180deg, transparent 60%, rgba(3,6,26,0.6) 100%);
      pointer-events: none;
    }
    .device .top {
      display: flex; align-items: center; justify-content: space-between;
      padding: 10px 12px; margin-bottom: 14px;
    }
    .device .top .dot { width: 36px; height: 36px; border-radius: 50%; background: var(--accent-grad); }
    .device .top .badge {
      font-family: 'JetBrains Mono', monospace; font-size: 10px;
      letter-spacing: 2px; color: var(--brand);
      padding: 5px 10px; border-radius: 6px;
      background: rgba(79,172,254,0.12);
    }
    .device .post {
      background: rgba(255,255,255,0.03);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 14px;
      margin-bottom: 10px;
    }
    .device .post .meta {
      display: flex; align-items: center; gap: 10px; margin-bottom: 10px;
    }
    .device .post .avatar {
      width: 32px; height: 32px; border-radius: 50%;
      background: linear-gradient(135deg, #6364FF, #00F2FE);
    }
    .device .post .name {
      font-weight: 600; font-size: 13px; color: var(--text);
    }
    .device .post .role {
      font-size: 11px; color: var(--text-dim);
    }
    .device .post .line {
      height: 8px; border-radius: 4px; background: rgba(255,255,255,0.06);
      margin-bottom: 6px;
    }
    .device .post .line.short { width: 60%; }
    .device .post .line.tiny  { width: 30%; height: 6px; margin-top: 8px; background: rgba(79,172,254,0.20); }

    /* ---------------- Ticker ---------------- */
    .ticker {
      overflow: hidden;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      background: rgba(7,11,34,0.6);
      padding: 18px 0;
      margin-top: 40px;
    }
    .ticker-track {
      display: flex; gap: 56px;
      white-space: nowrap;
      animation: tick 50s linear infinite;
      font-family: 'JetBrains Mono', monospace;
      font-size: 13px; letter-spacing: 4px;
      color: var(--text-muted);
      text-transform: uppercase;
    }
    .ticker-track span { display: inline-flex; align-items: center; gap: 56px; }
    .ticker-track span::after {
      content: '·'; color: var(--brand); font-size: 24px;
    }
    @keyframes tick {
      from { transform: translateX(0); }
      to   { transform: translateX(-50%); }
    }

    /* ---------------- Section header ---------------- */
    section { padding: 90px 0; position: relative; }
    .section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
    .section-head .eyebrow { margin: 0 auto 18px; }
    .section-head h2 {
      font-size: clamp(32px, 4.4vw, 52px);
      line-height: 1.1; letter-spacing: -0.02em;
      font-weight: 800; margin-bottom: 16px;
    }
    .section-head h2 .grad {
      background: var(--accent-grad);
      -webkit-background-clip: text; background-clip: text;
      color: transparent;
    }
    .section-head p {
      color: var(--text-muted); font-size: 17px;
    }

    /* ---------------- Features grid ---------------- */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    @media (max-width: 980px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 640px) { .grid-3 { grid-template-columns: 1fr; } }

    .card {
      background: linear-gradient(160deg, var(--bg-card) 0%, var(--bg-card-2) 100%);
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 28px;
      transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
      position: relative;
      overflow: hidden;
    }
    .card::before {
      content: ''; position: absolute; inset: 0;
      background: radial-gradient(400px circle at var(--mx,50%) var(--my,0%), rgba(79,172,254,0.08), transparent 50%);
      pointer-events: none; opacity: 0;
      transition: opacity 0.3s;
    }
    .card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
    .card:hover::before { opacity: 1; }
    .card .icon {
      width: 48px; height: 48px;
      border-radius: 12px;
      display: inline-flex; align-items: center; justify-content: center;
      background: rgba(79,172,254,0.12);
      color: var(--brand);
      margin-bottom: 20px;
      font-size: 22px;
    }
    .card h3 {
      font-size: 19px; font-weight: 700;
      margin-bottom: 10px; letter-spacing: -0.01em;
    }
    .card p {
      color: var(--text-muted);
      font-size: 14.5px; line-height: 1.6;
      margin-bottom: 16px;
    }
    .card ul { list-style: none; }
    .card ul li {
      font-size: 13px; color: var(--text-dim);
      padding: 4px 0;
      font-family: 'JetBrains Mono', monospace;
    }
    .card ul li::before {
      content: '› '; color: var(--brand);
    }

    /* ---------------- Two-column showcase ---------------- */
    .showcase {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    @media (max-width: 980px) {
      .showcase { grid-template-columns: 1fr; gap: 32px; }
    }
    .showcase h3 {
      font-size: clamp(28px, 3.4vw, 40px);
      letter-spacing: -0.02em; font-weight: 800; margin-bottom: 18px;
      line-height: 1.15;
    }
    .showcase p { color: var(--text-muted); font-size: 16px; margin-bottom: 20px; }
    .showcase .feature-list {
      list-style: none; padding: 0;
    }
    .showcase .feature-list li {
      display: flex; gap: 14px; align-items: flex-start;
      padding: 14px 0; border-top: 1px solid var(--border);
    }
    .showcase .feature-list li:last-child { border-bottom: 1px solid var(--border); }
    .showcase .feature-list .marker {
      width: 28px; height: 28px; flex: 0 0 28px;
      border-radius: 8px;
      background: rgba(79,172,254,0.12);
      color: var(--brand);
      display: inline-flex; align-items: center; justify-content: center;
      font-size: 14px;
    }
    .showcase .feature-list strong { display: block; font-weight: 600; margin-bottom: 4px; color: var(--text); }
    .showcase .feature-list span   { font-size: 13.5px; color: var(--text-muted); }

    /* Mock app pane on showcase */
    .mock-pane {
      background: linear-gradient(160deg, var(--bg-card) 0%, var(--bg-card-2) 100%);
      border: 1px solid var(--border-strong);
      border-radius: 24px;
      padding: 22px;
      box-shadow: var(--shadow-card), var(--glow);
      position: relative;
    }
    .mock-pane .pane-row {
      display: flex; gap: 12px; align-items: center;
      padding: 12px 14px; border-radius: 12px;
      background: rgba(255,255,255,0.03);
      border: 1px solid var(--border);
      margin-bottom: 10px;
    }
    .mock-pane .pane-row .av {
      width: 32px; height: 32px; border-radius: 8px;
      background: var(--accent-grad);
    }
    .mock-pane .pane-row .col { flex: 1; min-width: 0; }
    .mock-pane .pane-row .ln { height: 8px; background: rgba(255,255,255,0.07); border-radius: 4px; margin-bottom: 6px; }
    .mock-pane .pane-row .ln.s { width: 50%; }
    .mock-pane .pane-row .pill {
      font-family: 'JetBrains Mono', monospace; font-size: 10px;
      padding: 4px 8px; border-radius: 6px;
      background: rgba(79,172,254,0.14); color: var(--brand);
    }
    .mock-pane .pane-row .pill.gold { background: rgba(255,215,0,0.14); color: #FFD700; }
    .mock-pane .pane-row .pill.ok   { background: rgba(34,197,94,0.14); color: #34D399; }

    /* ---------------- Stats strip ---------------- */
    .stats-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      padding: 28px;
      background: linear-gradient(160deg, var(--bg-card) 0%, var(--bg-card-2) 100%);
      border: 1px solid var(--border);
      border-radius: 20px;
    }
    @media (max-width: 720px) { .stats-strip { grid-template-columns: repeat(2, 1fr); } }
    .stats-strip .s {
      padding: 8px 12px; text-align: center;
    }
    .stats-strip .s strong {
      display: block; font-size: 28px; font-weight: 800;
      background: var(--accent-grad);
      -webkit-background-clip: text; background-clip: text; color: transparent;
      font-family: 'JetBrains Mono', monospace;
      letter-spacing: -1px;
    }
    .stats-strip .s span {
      font-size: 12px; color: var(--text-dim); text-transform: uppercase;
      letter-spacing: 1.5px;
    }

    /* ---------------- Mobile download row ---------------- */
    .download-row {
      display: flex; gap: 14px; flex-wrap: wrap; justify-content: center;
      margin-top: 32px;
    }
    .download-row .store {
      display: inline-flex; align-items: center; gap: 12px;
      padding: 12px 20px;
      background: rgba(255,255,255,0.04);
      border: 1px solid var(--border-strong);
      border-radius: 14px;
      transition: background 0.15s;
    }
    .download-row .store:hover { background: rgba(255,255,255,0.08); }
    .download-row .store .glyph {
      width: 30px; height: 30px;
      display: inline-flex; align-items: center; justify-content: center;
      font-size: 20px;
    }
    .download-row .store .lbl { line-height: 1.1; }
    .download-row .store .lbl small { display: block; font-size: 11px; color: var(--text-dim); }
    .download-row .store .lbl strong { font-size: 14px; font-weight: 600; }

    /* ---------------- CTA block ---------------- */
    .cta-block {
      text-align: center;
      padding: 80px 32px;
      background:
        radial-gradient(800px circle at 50% 0%, rgba(99,100,255,0.18), transparent 60%),
        linear-gradient(160deg, var(--bg-card) 0%, var(--bg-card-2) 100%);
      border: 1px solid var(--border-strong);
      border-radius: 28px;
      position: relative;
      overflow: hidden;
    }
    .cta-block h2 {
      font-size: clamp(30px, 4.5vw, 50px);
      font-weight: 800; letter-spacing: -0.02em; line-height: 1.1;
      margin-bottom: 16px;
    }
    .cta-block p {
      color: var(--text-muted); font-size: 17px;
      max-width: 560px; margin: 0 auto 28px;
    }

    /* ---------------- Footer ---------------- */
    footer.site {
      border-top: 1px solid var(--border);
      padding: 60px 0 30px;
      margin-top: 80px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 40px;
    }
    @media (max-width: 720px) {
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    footer .col h4 {
      font-size: 11px; letter-spacing: 2.5px; text-transform: uppercase;
      color: var(--text-dim); margin-bottom: 16px; font-weight: 600;
    }
    footer .col a {
      display: block; padding: 5px 0;
      color: var(--text-muted); font-size: 14px;
      transition: color 0.15s;
    }
    footer .col a:hover { color: var(--text); }
    footer .meta {
      display: flex; justify-content: space-between; flex-wrap: wrap; gap: 14px;
      padding-top: 28px; border-top: 1px solid var(--border);
      color: var(--text-dim); font-size: 13px;
    }

    /* ---------------- Flutter loading overlay ---------------- */
    .flutter-loading {
      position: fixed; inset: 0; z-index: 9999;
      background: var(--bg-deep);
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      gap: 18px;
    }
    .flutter-loading .ring {
      width: 56px; height: 56px;
      border: 3px solid rgba(79,172,254,0.18);
      border-top-color: var(--brand);
      border-radius: 50%;
      animation: spin 0.9s linear infinite;
    }
    .flutter-loading .l-brand {
      font-family: 'JetBrains Mono', monospace; font-size: 12px;
      letter-spacing: 4px; color: var(--text-muted);
    }
    @keyframes spin { to { transform: rotate(360deg); } }

    /* ---------------- VIR AI chat bubble ---------------- */
    .vir-ai-bubble {
      position: fixed; right: 22px; bottom: 22px; z-index: 90;
      width: 60px; height: 60px;
      border-radius: 50%;
      background: var(--accent-grad);
      display: inline-flex; align-items: center; justify-content: center;
      box-shadow: 0 12px 32px rgba(79,172,254,0.45);
      cursor: pointer;
      transition: transform 0.2s;
    }
    .vir-ai-bubble:hover { transform: scale(1.05); }
    .vir-ai-bubble svg { width: 26px; height: 26px; color: white; }
    .vir-ai-bubble::after {
      content: 'AI';
      position: absolute; top: -4px; right: -4px;
      font-size: 9px; font-weight: 800; color: white;
      background: #FF4D6D;
      padding: 3px 6px; border-radius: 8px;
      font-family: 'JetBrains Mono', monospace;
    }

    /* ---------------- Accessibility focus ring ---------------- */
    a:focus-visible, button:focus-visible {
      outline: 2px solid var(--brand);
      outline-offset: 3px;
      border-radius: 6px;
    }

    /* ---------------- Anim ---------------- */
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { animation-duration: 0.001s !important; transition-duration: 0.001s !important; }
    }