/* ===========================
   Design-Variablen (Light)
   =========================== */
:root {
  --color-bg:            #f4f6fb;
  --color-surface:       #ffffff;
  --color-text:          #12223a;
  --color-muted:         #677a9a;
  --color-primary:       #1f6feb;
  --color-primary-contrast:#ffffff;
  --color-border:        #dbe3f0;
  --color-focus:         #5584ff;

  --font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Arial, sans-serif;

  --radius: 14px;
  --shadow: 0 10px 26px rgba(25, 40, 68, 0.18);
  --space:  14px;

  /* Logo: skaliert zwischen 120px und 220px (über 15vw) */
  --logo-width: clamp(50px, 15vw, 100px);

  /* Brandbar */
  --brandbar-bg: linear-gradient(90deg, #0f1e36, #142b4e 60%, #1b3a6b);
  --brandbar-text: #e7eefc;
}

/* ===========================
   Dark Mode
   =========================== */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:            #0a192f;
    --color-surface:       #112240;
    --color-text:          #e6eaf3;
    --color-muted:         #9bb0d0;
    --color-primary:       #1f6feb;
    --color-primary-contrast:#ffffff;
    --color-border:        #1e3354;
    --color-focus:         #6ea8fe;
    --shadow: 0 12px 30px rgba(0,0,0,0.45);

    --brandbar-bg: linear-gradient(90deg, #081326, #0f1f3b 60%, #153159);
    --brandbar-text: #dbe7ff;
  }
}

/* Manuelle Erzwingung per data-theme (setzt Systemvorgabe außer Kraft) */
html[data-theme="dark"] {
  --color-bg:#0a192f; --color-surface:#112240; --color-text:#e6eaf3; --color-muted:#9bb0d0;
  --color-primary:#1f6feb; --color-primary-contrast:#fff; --color-border:#1e3354; --color-focus:#6ea8fe;
  --shadow:0 12px 30px rgba(0,0,0,.45);
  --brandbar-bg: linear-gradient(90deg, #081326, #0f1f3b 60%, #153159);
  --brandbar-text: #dbe7ff;
}

html[data-theme="light"] {
  --color-bg:#f4f6fb; --color-surface:#fff; --color-text:#12223a; --color-muted:#677a9a;
  --color-primary:#1f6feb; --color-primary-contrast:#fff; --color-border:#dbe3f0; --color-focus:#5584ff;
  --shadow:0 10px 26px rgba(25,40,68,.18);
  --brandbar-bg: linear-gradient(90deg, #0f1e36, #142b4e 60%, #1b3a6b);
  --brandbar-text: #e7eefc;
}

/* ===========================
   Global
   =========================== */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-family);
  background: linear-gradient(135deg, var(--color-bg), var(--color-surface));
  color: var(--color-text);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}

/* ===========================
   Brand-Bar (Headerband)
   =========================== */
.brand-bar {
  background: var(--brandbar-bg);
  color: var(--brandbar-text);
  box-shadow: 0 2px 10px rgba(0,0,0,.18);
}
.brand-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 16px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
}
.brand-logo { width: var(--logo-width); height: auto; object-fit: contain; display: block; }
.brand-title { line-height: 1.1; }
.brand-name { font-weight: 700; font-size: clamp(16px, 2vw, 20px); display:block; }
.brand-sub  { font-size: 12px; opacity: .9; }

.brand-actions {
  display: inline-flex; gap: 8px; align-items: center;
}

.lang-switch .lang-btn {
  border: 1px solid rgba(255,255,255,.25);
  background: transparent;
  color: var(--brandbar-text);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
}
.lang-switch .lang-btn[aria-pressed="true"] {
  background: rgba(255,255,255,.18);
}

/* ===========================
   Container (Login-Card)
   =========================== */
.container {
  max-width: 420px;
  margin: clamp(18px, 4vh, 40px) auto;
  background: var(--color-surface);
  padding: calc(var(--space) * 2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

h2 { margin: 8px 0 14px 0; font-weight: 650; font-size: 20px; }
.p-muted { margin: 0 0 18px 0; color: var(--color-muted); font-size: 13px; }

/* Form */
.login-form .form-group { margin-bottom: var(--space); }
.login-form label { display:block; margin-bottom:6px; font-size:13px; color:var(--color-text); }
.login-form .hint { display:block; font-size:12px; color:var(--color-muted); margin-top:4px; }

.login-form input[type="text"],
.login-form input[type="password"],
.login-form input[type="number"] {
  width: 100%; padding: 12px 12px; font-size: 15px;
  border: 1px solid var(--color-border); border-radius: 8px;
  background: #ffffff11; color: var(--color-text);
}
.login-form input::placeholder { color: var(--color-muted); }
.login-form input:focus {
  outline: none; border-color: var(--color-focus);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-focus), transparent 70%);
}

.submit-btn {
  width: 100%; padding: 12px; margin-top: 6px; font-size: 16px; font-weight: 700;
  color: var(--color-primary-contrast); background: var(--color-primary);
  border: none; border-radius: 10px; cursor: pointer;
  transition: filter .15s ease, transform .02s ease;
}
.submit-btn:hover { filter: brightness(1.05); }
.submit-btn:active { transform: translateY(1px); }

/* Theme-Toggle */
.theme-toggle {
  border: 1px solid rgba(255,255,255,.25);
  background: transparent;
  color: var(--brandbar-text);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
}

/* Footer */
.footer {
  margin-top: calc(var(--space) * 1.4);
  text-align: center;
  font-size: 12px;
  color: var(--color-muted);
}

/* Mobile Tweaks */
@media (max-width: 480px) {
  .brand-inner { grid-template-columns: 1fr auto; grid-template-areas:
     "logo actions"
     "title title";
  }
  .brand-logo-wrap { grid-area: logo; }
  .brand-title     { grid-area: title; }
  .brand-actions   { grid-area: actions; justify-self: end; }
}