:root {
  --bg: #05080f; --fg: #eef2f8; --muted: #8592a6; --line: rgba(255,255,255,.09);
  --glass: rgba(15, 22, 36, .62); --signal: #f5a524; --signal-2: #ff6a3d; --ok: #3fd07a; --cyan: #38bdf8;
  --mono: ui-monospace, "Cascadia Mono", "JetBrains Mono", Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); overflow-x: hidden;
       font: 16px/1.55 "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
       -webkit-font-smoothing: antialiased; }

/* pozadie */
.bg { position: fixed; inset: 0; overflow: hidden; z-index: 0; }
.grid { position: absolute; inset: -50% -50% 0; transform: perspective(600px) rotateX(58deg); transform-origin: 50% 0;
  background-image: linear-gradient(rgba(245,165,36,.16) 1px, transparent 1px), linear-gradient(90deg, rgba(245,165,36,.16) 1px, transparent 1px);
  background-size: 56px 56px; top: 52%; animation: drift 14s linear infinite;
  mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 60%, transparent); }
@keyframes drift { to { background-position: 0 56px, 0 0; } }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .55; }
.o1 { width: 520px; height: 520px; background: radial-gradient(circle, var(--signal-2), transparent 65%); top: -160px; left: -120px; animation: float 18s ease-in-out infinite; }
.o2 { width: 460px; height: 460px; background: radial-gradient(circle, #2563eb, transparent 65%); bottom: -140px; right: -100px; animation: float 22s ease-in-out infinite reverse; }
@keyframes float { 50% { transform: translate(60px, 40px) scale(1.08); } }
.scan { position: absolute; inset: 0; background: repeating-linear-gradient(to bottom, rgba(255,255,255,.018) 0 1px, transparent 1px 3px); }

/* rozloženie */
.shell { position: relative; z-index: 1; min-height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 32px 16px; gap: 24px; }

.card { position: relative; width: 100%; max-width: 420px; padding: 32px 30px 26px; border-radius: 20px;
  background: var(--glass); backdrop-filter: blur(22px) saturate(140%); -webkit-backdrop-filter: blur(22px) saturate(140%);
  border: 1px solid var(--line); box-shadow: 0 30px 80px -30px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.06);
  animation: rise .7s cubic-bezier(.2,.8,.2,1) both; }
.card::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; pointer-events: none;
  background: linear-gradient(140deg, rgba(245,165,36,.7), transparent 35%, transparent 65%, rgba(56,189,248,.5));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
@keyframes rise { from { opacity: 0; transform: translateY(18px) scale(.98); } }

.card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.logo { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 12px; color: #1a1203;
  background: linear-gradient(135deg, var(--signal), var(--signal-2)); box-shadow: 0 8px 24px -6px rgba(245,120,36,.6); }
.logo svg { width: 24px; height: 24px; }
.status { display: inline-flex; align-items: center; gap: 8px; font: 12px var(--mono); color: var(--muted); letter-spacing: .04em;
  padding: 5px 10px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.03); }
.led { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 0 rgba(63,208,122,.6); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 7px rgba(63,208,122,0); } 100% { box-shadow: 0 0 0 0 rgba(63,208,122,0); } }

.kicker { margin: 0 0 8px; font: 12px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--signal); }
h1 { margin: 0 0 8px; font-size: 34px; line-height: 1.1; letter-spacing: -.025em; font-weight: 700; }
.caret { display: inline-block; width: .45em; height: .08em; margin-left: .12em; background: var(--signal); vertical-align: baseline; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.sub { margin: 0 0 26px; color: var(--muted); }

.alert { margin: -8px 0 18px; padding: 10px 14px; border-radius: 10px; font-size: 14px;
  background: rgba(255,90,70,.1); border: 1px solid rgba(255,90,70,.35); color: #ffb4a8; }

.sso { position: relative; display: flex; align-items: center; gap: 14px; padding: 14px 16px; border-radius: 14px; text-decoration: none; color: #1a1203;
  background: linear-gradient(135deg, var(--signal), var(--signal-2)); overflow: hidden; isolation: isolate;
  box-shadow: 0 14px 34px -12px rgba(255,106,61,.7); transition: transform .18s, box-shadow .18s; }
.sso::after { content: ""; position: absolute; inset: 0; z-index: -1; transform: translateX(-120%);
  background: linear-gradient(100deg, transparent 30%, rgba(255,255,255,.45), transparent 70%); transition: transform .7s; }
.sso:hover { transform: translateY(-2px); box-shadow: 0 20px 40px -12px rgba(255,106,61,.8); }
.sso:hover::after { transform: translateX(120%); }
.sso:active { transform: translateY(0); }
.sso:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.sso-ico { width: 38px; height: 38px; flex: none; display: grid; place-items: center; border-radius: 10px; background: rgba(26,18,3,.14); }
.sso-ico svg { width: 22px; height: 22px; fill: #1a1203; stroke: #1a1203; stroke-width: 1.8; stroke-linecap: round; }
.sso-txt { display: flex; flex-direction: column; line-height: 1.25; flex: 1; }
.sso-txt strong { font-size: 16px; }
.sso-txt small { font: 12px var(--mono); opacity: .7; }
.sso-arrow { font-size: 20px; transition: transform .18s; }
.sso:hover .sso-arrow { transform: translateX(4px); }

.facts { list-style: none; margin: 22px 0 0; padding: 18px 0 0; border-top: 1px dashed var(--line); display: grid; gap: 8px; font-size: 14px; color: var(--muted); }
.facts span { display: inline-block; min-width: 44px; margin-right: 10px; font: 11px var(--mono); letter-spacing: .08em; color: var(--cyan);
  padding: 2px 6px; border: 1px solid rgba(56,189,248,.3); border-radius: 5px; text-align: center; }
.help { margin: 18px 0 0; font-size: 13px; color: var(--muted); }

.foot { display: flex; align-items: center; gap: 12px; font: 12px var(--mono); color: var(--muted); }
.tag { color: var(--signal); border: 1px solid rgba(245,165,36,.5); padding: 1px 7px; border-radius: 4px; text-transform: uppercase; letter-spacing: .1em; font-size: 10px; }

@media (max-width: 480px) {
  .card { padding: 26px 20px 22px; border-radius: 16px; }
  h1 { font-size: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}