/* ============================================================
   LOGIN.CSS
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #e8edf4;
  background-image:
    radial-gradient(ellipse at 0% 0%,   rgba(37,99,171,.10) 0%, transparent 60%),
    radial-gradient(ellipse at 100% 100%, rgba(14,116,188,.08) 0%, transparent 60%);
}

/* ── Karta ─────────────────────────────────────────────────── */
.login-card {
  width: 100%;
  max-width: 540px;
  display: flex;
  border-radius: 18px;
  overflow: hidden;
  box-shadow:
    0 4px 6px  rgba(0,0,0,.04),
    0 20px 48px rgba(0,0,0,.13),
    0 1px 0    rgba(255,255,255,.9) inset;
}

/* ── Levý panel (branding) ─────────────────────────────────── */
.lc-left {
  width: 42%;
  flex-shrink: 0;
  background: linear-gradient(160deg, #0c1e3d 0%, #1a3a6e 60%, #1e4d8c 100%);
  padding: 48px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  text-align: center;
}

/* Dekorativní kruhy */
.lc-left::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255,255,255,.05);
}
.lc-left::after {
  content: '';
  position: absolute;
  bottom: -30px;
  left: -30px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
}

.lc-icon {
  width: 60px;
  height: 60px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 18px;
  position: relative;
  z-index: 1;
}

.lc-name {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -.2px;
  position: relative;
  z-index: 1;
}

.lc-tagline {
  font-size: 12px;
  color: rgba(255,255,255,.45);
  margin-top: 6px;
  line-height: 1.5;
  position: relative;
  z-index: 1;
}

/* Tenká svítící čára mezi panely */
.lc-left-accent {
  position: absolute;
  top: 0; bottom: 0; right: 0;
  width: 1px;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(255,255,255,.15) 30%,
    rgba(255,255,255,.25) 50%,
    rgba(255,255,255,.15) 70%,
    transparent 100%
  );
}

/* ── Pravý panel (formulář) ────────────────────────────────── */
.lc-right {
  flex: 1;
  background: #fff;
  padding: 44px 36px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.lc-title {
  font-size: 20px;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -.3px;
  margin-bottom: 4px;
}

.lc-subtitle {
  font-size: 13px;
  color: #94a3b8;
  margin-bottom: 26px;
}

/* ── Chyba ─────────────────────────────────────────────────── */
.login-error {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  color: #991b1b;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 18px;
}

/* ── Pole ──────────────────────────────────────────────────── */
.login-field { margin-bottom: 16px; }

.login-field label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: #374151;
  margin-bottom: 6px;
}

.login-field input {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid #e2e8f0;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  color: #0f172a;
  background: #f8fafc;
  outline: none;
  transition: border-color .15s, box-shadow .15s, background .15s;
}

.login-field input:focus {
  border-color: #2563ab;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(37,99,171,.1);
}

/* ── Tlačítko ──────────────────────────────────────────────── */
.login-btn {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #1a3a6e 0%, #2563ab 100%);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  margin-top: 8px;
  letter-spacing: .2px;
  transition: opacity .15s, transform .15s, box-shadow .15s;
}

.login-btn:hover {
  opacity: .9;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(26,58,110,.35);
}

.login-btn:active { transform: none; }

/* ── Patička ───────────────────────────────────────────────── */
.lc-footer {
  margin-top: 22px;
  font-size: 12px;
  color: #cbd5e1;
  text-align: center;
}

/* ── Responsivita ──────────────────────────────────────────── */
@media (max-width: 560px) {
  .login-card {
    flex-direction: column;
    border-radius: 14px;
  }

  .lc-left {
    width: 100%;
    flex-direction: row;
    justify-content: flex-start;
    padding: 20px 24px;
    gap: 14px;
    text-align: left;
  }

  .lc-left::before,
  .lc-left::after,
  .lc-left-accent { display: none; }

  .lc-icon {
    width: 44px;
    height: 44px;
    font-size: 22px;
    margin: 0;
    flex-shrink: 0;
  }

  .lc-name    { font-size: 17px; }
  .lc-tagline { display: none; }

  .lc-right   { padding: 28px 24px 24px; }
}

/* ── Dark mode ─────────────────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  body.login-page {
    background: #0d1117;
    background-image:
      radial-gradient(ellipse at 0% 0%,   rgba(37,99,171,.15) 0%, transparent 60%),
      radial-gradient(ellipse at 100% 100%, rgba(14,116,188,.12) 0%, transparent 60%);
  }
  .lc-right {
    background: #161b22;
  }
  .lc-title   { color: #e6edf3; }
  .lc-subtitle { color: #8b949e; }
  .login-field label { color: #8b949e; }
  .login-field input {
    background: #0d1117;
    border-color: #30363d;
    color: #e6edf3;
  }
  .login-field input:focus {
    border-color: #3b82f6;
    background: #161b22;
    box-shadow: 0 0 0 3px rgba(59,130,246,.12);
  }
  .lc-footer { color: #656d76; }
  .login-card {
    box-shadow: 0 4px 6px rgba(0,0,0,.3), 0 20px 48px rgba(0,0,0,.5);
  }
}