/* Delikana — administrace. Barvy a typografie vycházejí z myjsmedelikana.cz. */

:root {
  --cervena: #d41217;
  --cervena-tmava: #ad0e13;
  --cervena-svetla: #e31529;
  --bridlice: #29303d;
  --bridlice-tmava: #1b2029;
  --inkoust: #212121;
  --seda: #767676;
  --linka: #d9dbdb;
  --papir: #ffffff;
  --sans: 'Jost', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --serif: 'Noto Serif', Georgia, 'Times New Roman', serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--inkoust);
  background-color: var(--bridlice);
  background-image:
    radial-gradient(900px 480px at 50% -8%, rgba(212, 18, 23, 0.30), transparent 70%),
    linear-gradient(180deg, var(--bridlice) 0%, var(--bridlice-tmava) 100%);
  background-attachment: fixed;
}

.ram {
  width: 100%;
  max-width: 420px;
}

/* --- značka nad kartou --- */

.znacka {
  text-align: center;
  margin-bottom: 26px;
}

.znacka img {
  width: 200px;
  height: auto;
  display: block;
  margin: 0 auto;
}

.nadpis-systemu {
  margin: 10px 0 0;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}

/* --- karta s formulářem --- */

.karta {
  background: var(--papir);
  border-radius: 14px;
  padding: 32px 28px;
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.38);
}

.karta h1 {
  margin: 0 0 22px;
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  color: var(--inkoust);
}

.karta h1::after {
  content: "";
  display: block;
  width: 46px;
  height: 3px;
  margin: 12px auto 0;
  border-radius: 2px;
  background: var(--cervena);
}

/* --- pole --- */

.pole { margin-bottom: 18px; }

.pole label {
  display: block;
  margin-bottom: 7px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--seda);
}

.pole input {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 16px;
  color: var(--inkoust);
  background: #fcfcfc;
  border: 1px solid var(--linka);
  border-radius: 9px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.pole input::placeholder { color: #b4b4b4; }

.pole input:hover { border-color: #bdbfbf; }

.pole input:focus {
  outline: none;
  background: var(--papir);
  border-color: var(--cervena);
  box-shadow: 0 0 0 3px rgba(212, 18, 23, 0.16);
}

/* --- tlačítko --- */

button[type="submit"] {
  width: 100%;
  margin-top: 6px;
  padding: 13px 16px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--papir);
  background: var(--cervena);
  border: 0;
  border-radius: 9px;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.08s ease;
}

button[type="submit"]:hover { background: var(--cervena-tmava); }

button[type="submit"]:active { transform: translateY(1px); }

button[type="submit"]:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.85);
  outline-offset: 2px;
}

/* --- chyba --- */

.chyba {
  margin: 0 0 18px;
  padding: 11px 14px;
  font-size: 14px;
  color: #8d0b0f;
  background: #fdeced;
  border: 1px solid #f3c2c4;
  border-left: 3px solid var(--cervena);
  border-radius: 8px;
}

/* --- patička --- */

.pata {
  margin: 20px 0 0;
  font-size: 12.5px;
  text-align: center;
  color: rgba(255, 255, 255, 0.55);
}

@media (max-width: 400px) {
  .karta { padding: 26px 20px; }
  .znacka img { width: 168px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}