/* ==================================================================
   OTPConnect — mobile / tablet: bottom nav + app-like experience
   ================================================================== */

@media (max-width: 1080px) {
  .main-menu { display: none; }
  .burger { display: inline-grid; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; margin-top: 6px; }
  .demo-card { width: min(340px, 86%); }
  .dash-grid { grid-template-columns: 1fr 1fr 1fr; }
  .balance-card { grid-column: 1 / -1; }
  .wizard { grid-template-columns: 1fr; }
  .wiz-arrow { transform: rotate(90deg); height: 30px; }
  .pick-grid { max-height: 230px; }
  .server-row { max-height: 180px; }
  .contact-grid, .wallet-grid, .api-grid, .auth-grid { grid-template-columns: 1fr; }
  .how-price { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .f-brand { grid-column: 1 / -1; }
  .steps-grid, .feat-grid, .blog-grid { grid-template-columns: 1fr 1fr; }
  .blog-grid.rel { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .a-two-col { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  :root { --nav-h: 60px; }
  .container { padding: 0 16px; }
  .section { padding: 46px 0; }
  main { padding-bottom: 96px; }
  .nav-login { display: none; }
  .balance-pill b { font-size: 13px; }
  .hero { padding-top: 30px; }
  .hero-cta .btn { flex: 1; }
  .svc-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .svc-grid.big { grid-template-columns: 1fr 1fr; }
  .svc-card { padding: 12px; gap: 9px; }
  .svc-letter { flex-basis: 34px; width: 34px; height: 34px; font-size: 14px; }
  .svc-name { font-size: 13.5px; }
  .svc-code { display: none; }
  .cty-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .steps-grid, .feat-grid, .blog-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .stat b { font-size: 22px; }
  .table-card { overflow-x: auto; }
  .tbl { min-width: 560px; }
  .price-edit { min-width: 640px; }
  .live-grid, .live-strip { grid-template-columns: 1fr; }
  .wizard { padding: 14px; gap: 4px; }
  .wiz-step { padding: 6px 0 14px; border-bottom: 1px dashed var(--line); }
  .wiz-step:last-of-type { border-bottom: none; }
  .wiz-pick { max-width: 90px; }
  .dash-grid { grid-template-columns: 1fr 1fr; }
  .balance-card b { font-size: 32px; }
  .auth-zone { padding: 26px 0; }
  .auth-card { padding: 22px 18px; }
  .auth-side { display: none; }
  .post-share { flex-direction: column; align-items: flex-start; }
  .topup-form { flex-direction: column; align-items: stretch; }
  .topup-form .btn { width: 100%; }
  .cta-inner { padding: 40px 20px; border-radius: 22px; }
  .float-tag.ft1 { width: 86px; right: -4px; }
  .float-tag.ft2 { width: 96px; left: -4px; }
  #toasts { top: auto; bottom: 86px; left: 14px; right: 14px; max-width: none; }
  .toast { animation: toastUp 0.35s cubic-bezier(0.2, 0.9, 0.3, 1.2); }
  @keyframes toastUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

  /* ---------- app-like bottom navigation ---------- */
  .bottom-nav {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 80;
    display: grid; grid-template-columns: repeat(5, 1fr);
    background: color-mix(in srgb, var(--surface) 86%, transparent);
    backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    border-top: 1px solid var(--line);
    padding: 6px 6px calc(6px + env(safe-area-inset-bottom, 0px));
    box-shadow: 0 -10px 30px rgba(3, 20, 40, 0.1);
  }
  .bottom-nav a {
    display: grid; place-items: center; gap: 2px; padding: 7px 2px; border-radius: 13px;
    color: var(--muted); font-size: 10px; font-weight: 700; position: relative;
    transition: color 0.2s, background 0.2s;
  }
  .bottom-nav a .ico { width: 21px; height: 21px; transition: transform 0.25s cubic-bezier(0.2, 0.9, 0.3, 1.3); }
  .bottom-nav a.on { color: var(--sky); }
  .bottom-nav a.on .ico { transform: translateY(-2px) scale(1.08); }
  .bottom-nav a.on::before {
    content: ''; position: absolute; top: 2px; width: 34px; height: 20px; border-radius: 999px;
    background: color-mix(in srgb, var(--sky) 14%, transparent); z-index: -1;
  }
  .bottom-nav .nb {
    position: absolute; top: 3px; right: calc(50% - 19px); min-width: 15px; height: 15px; padding: 0 4px;
    border-radius: 999px; background: var(--err); color: #fff; font-size: 9.5px; line-height: 15px; font-weight: 800;
  }
}

@media (min-width: 761px) {
  .bottom-nav { display: none; }
}

/* touch polish */
@media (hover: none) {
  .btn:hover { transform: none; }
  .svc-card:hover, .cty-card:hover, .blog-card:hover, .feat-card:hover { transform: none; }
}

/* small phones */
@media (max-width: 380px) {
  .svc-grid, .cty-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 27px; }
}