/* Přihlašovací obrazovka a stránky kolem hesla (prihlaseni.php, zapomenute-heslo.php, nove-heslo.php). */
:root { --accent:#003153; --accent-dark:#00243d; --tan:#ba906b; --ink:#1c2733; --muted:#6f7683; --border:#d7dce2; --r:10px; }
  * { box-sizing:border-box; }
  :focus, :focus-visible { outline:none !important; }
  body { margin:0; min-height:100vh; display:flex; flex-direction:column; align-items:center; justify-content:center;
         padding:24px 16px; background:#0b1830 radial-gradient(ellipse 90% 60% at 50% -10%, #1c3252 0%, #0b1830 70%);
         font-family:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif; }
  .brand { margin-bottom:24px; text-align:center; }
  .brand img { height:74px; width:auto; }
  .card { width:100%; max-width:400px; background:#ffffff; border-radius:14px; padding:30px 28px 26px;
          box-shadow:0 24px 60px rgba(0,0,0,.5); }
  h1 { font-size:1.4rem; font-weight:700; color:var(--accent); margin:0 0 6px; }
  .sub { color:var(--muted); font-size:.9rem; margin:0 0 18px; line-height:1.5; }
  label { display:block; font-size:.83rem; font-weight:700; color:var(--ink); margin:13px 0 5px; }
  input { width:100%; border:1px solid var(--border); border-radius:var(--r); padding:11px 12px;
          font-size:.95rem; font-family:inherit; background:#fff; color:var(--ink); }
  input:focus { outline:none; border-color:var(--accent); }
  button { width:100%; margin-top:20px; background:var(--accent); color:#fff; border:none; border-radius:var(--r);
           padding:13px; font-size:.98rem; font-weight:700; cursor:pointer; font-family:inherit; letter-spacing:.3px; }
  button:hover { background:var(--accent-dark); }
  .msg { border-radius:var(--r); padding:11px 14px; font-size:.87rem; line-height:1.45; margin:0 0 4px; }
  .msg-ok { background:#eef4e9; color:#3c5c2e; border:1px solid #d3e0c7; }
  .msg-err { background:#fbecec; color:#9c3030; border:1px solid #ecd0d0; }
  .reg { text-align:center; margin:18px 0 0; font-size:.88rem; color:var(--muted); }
  .reg a { color:var(--accent-dark); font-weight:700; }
  .foot { color:#8fa0b8; font-size:.78rem; margin-top:22px; text-align:center; }