:root {
  --modra: #2563eb;
  --modra-tmava: #1d4ed8;
  --text: #1f2937;
  --sivá: #6b7280;
  --pozadie: #f3f4f6;
  --karta: #ffffff;
  --okraj: #e5e7eb;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; } /* žiadne automatické zväčšenie textu na iOS */

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;            /* správna výška na mobiloch s lištou prehliadača */
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--pozadie);
  color: var(--text);
  padding: 1rem;
}

.karta {
  background: var(--karta);
  border: 1px solid var(--okraj);
  border-radius: 16px;
  padding: 1.5rem;
  width: 100%;
  max-width: 460px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

h1 { font-size: 1.35rem; margin: 0 0 0.25rem; }
.podnadpis { color: var(--sivá); margin: 0 0 1.25rem; font-size: 0.85rem; }

/* --- Lišta používateľa --- */
.hlavicka {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.ucet { display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; }
.kto { font-size: 0.8rem; color: var(--sivá); }
.link-btn {
  appearance: none;
  background: none;
  border: none;
  color: var(--modra);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.2rem 0.3rem;
  min-height: auto;
}
.link-btn:hover { text-decoration: underline; }

.heslo-panel {
  margin: 0 0 1.25rem;
  padding: 0.9rem;
  background: #f8fafc;
  border: 1px solid var(--okraj);
  border-radius: 12px;
}

form { display: flex; flex-direction: column; gap: 1.1rem; }
.skupina { display: flex; flex-direction: column; gap: 0.5rem; }
label { font-weight: 600; font-size: 0.9rem; }

/* --- Prepínač režimu --- */
.rezim {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
}
.rezim button {
  appearance: none;
  margin: 0;
  padding: 0.7rem 0.4rem;
  border: 1px solid var(--okraj);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 48px;
  -webkit-tap-highlight-color: transparent;
}
.rezim button.aktivne {
  background: var(--modra);
  border-color: var(--modra);
  color: #fff;
}

/* --- Tlačidlá fondu hodín (segmentový prepínač) --- */
.fondy {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.4rem;
}
.fondy button {
  appearance: none;
  margin: 0;
  padding: 0.7rem 0.2rem;
  border: 1px solid var(--okraj);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 48px;            /* pohodlný dotykový cieľ */
  -webkit-tap-highlight-color: transparent;
}
.fondy button small { display: block; font-size: 0.62rem; font-weight: 500; color: var(--sivá); }
.fondy button.aktivne {
  background: var(--modra);
  border-color: var(--modra);
  color: #fff;
}
.fondy button.aktivne small { color: #dbeafe; }

input {
  padding: 0.85rem 0.9rem;
  border: 1px solid var(--okraj);
  border-radius: 12px;
  font-size: 16px;             /* 16px = iOS nepriblíži stránku pri fokuse */
  width: 100%;
  background: #fff;
}
input:focus { outline: 2px solid var(--modra); border-color: var(--modra); }

button[type="submit"] {
  padding: 0.95rem 1rem;
  background: var(--modra);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  min-height: 52px;
  -webkit-tap-highlight-color: transparent;
}
button[type="submit"]:hover { background: var(--modra-tmava); }
button[type="submit"]:active { transform: translateY(1px); }

.vysledok {
  margin-top: 1.25rem;
  padding: 1rem;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: 12px;
}
.vysledok .velke {
  font-size: 1.7rem;
  font-weight: 700;
  color: #065f46;
  margin-top: 0.15rem;
}
.vysledok hr { margin: 0.75rem 0; }
.vysledok .riadok {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--sivá);
  margin-top: 0.35rem;
}
.skryte { display: none; }

.upozornenie {
  margin-top: 0.75rem;
  padding: 0.6rem 0.8rem;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 10px;
  font-size: 0.85rem;
  color: #92400e;
}

.info-ok {
  margin-top: 0.75rem;
  padding: 0.6rem 0.8rem;
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
  border-radius: 10px;
  font-size: 0.85rem;
  color: #065f46;
}

.nepovinne { font-weight: 400; color: var(--sivá); font-size: 0.8rem; }

.alternativa {
  margin-top: 0.75rem;
  padding: 0.8rem;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 12px;
}
.alt-nadpis { font-weight: 700; color: #1e40af; margin-bottom: 0.4rem; font-size: 0.95rem; }
.alternativa .riadok { color: #1e3a8a; }
.alt-pozn { margin-top: 0.5rem; font-size: 0.75rem; color: #475569; line-height: 1.35; }

.tlac-btn {
  margin-top: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: #fff;
  color: var(--modra);
  border: 1px solid var(--modra);
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 48px;
  -webkit-tap-highlight-color: transparent;
}
.tlac-btn:hover { background: #eff6ff; }

.tlac-only { display: none; } /* zobrazí sa len pri tlači */

hr { border: none; border-top: 1px solid var(--okraj); margin: 1.5rem 0 0.75rem; }

/* --- Tlač / PDF: ukáž len výsledok, čisto --- */
@media print {
  body { background: #fff; display: block; padding: 0; }
  .karta { box-shadow: none; border: none; max-width: 100%; padding: 0; }
  /* skry ovládacie prvky */
  .ucet, #formular, #hesloForm, #nastaveniaForm, .stav, .tlac-btn, hr { display: none !important; }
  .tlac-only { display: block; color: #555; font-size: 0.85rem; margin: 0.25rem 0 0; }
  /* farebné boxy nech sa vytlačia s pozadím */
  .vysledok, .alternativa, .info-ok, .upozornenie {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .vysledok { margin-top: 1rem; }
}
.stav { font-size: 0.8rem; color: var(--sivá); margin: 0; }
#stav.ok { color: #059669; font-weight: 600; }
#stav.chyba { color: #dc2626; font-weight: 600; }

/* --- Malé telefóny --- */
@media (max-width: 400px) {
  body { padding: 0.5rem; align-items: flex-start; }
  .karta { padding: 1.15rem; border-radius: 14px; }
  h1 { font-size: 1.2rem; }
  .fondy { gap: 0.3rem; }
  .fondy button { padding: 0.65rem 0.1rem; font-size: 0.85rem; }
}