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

/* ─── Tokens ─────────────────────────────────────────────────── */
:root {
  --bg:          #0f172a;
  --surface:     #1e293b;
  --surface-2:   #273349;
  --border:      #334155;
  --text:        #e2e8f0;
  --text-muted:  #94a3b8;
  --text-faint:  #64748b;
  --accent:      #3b82f6;
  --accent-hover:#2563eb;
  --danger:      #ef4444;
  --danger-bg:   #450a0a;
  --success:     #22c55e;
  --nav-h:       64px;
}

/* ─── Base ───────────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }

/* ─── Header / Navbar ────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  height: var(--nav-h);
}

.navbar {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-link {
  display: block;
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  font-size: 0.9375rem;
  color: var(--text-muted);
  transition: color 0.15s, background-color 0.15s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background-color: var(--surface-2);
}

.nav-link--login {
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.4rem 1rem;
}

.nav-link--login:hover,
.nav-link--login.active {
  background-color: var(--accent);
  color: #fff;
}

.nav-link--logout {
  color: var(--text-faint);
}

.nav-link--logout:hover {
  color: var(--danger);
  background-color: var(--danger-bg);
}

/* ─── Hamburger ──────────────────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-muted);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
  transform-origin: center;
}

.hamburger:hover span { background-color: var(--text); }

.hamburger--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger--open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Mobile nav ─────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hamburger { display: flex; }

  .nav-menu {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem 1rem;
  }

  .nav-menu--open { display: flex; }

  .nav-link { padding: 0.65rem 0.75rem; }

  .nav-link--login {
    margin-top: 0.5rem;
    text-align: center;
  }
}

/* ─── Main layout ────────────────────────────────────────────── */
.container {
  flex: 1;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.container--centered {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ─── Hero (Landing) ─────────────────────────────────────────── */
.container > h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  color: #f8fafc;
  text-align: center;
}

.container > p {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--text-muted);
  text-align: center;
}

p strong { color: var(--text); }

.subtitle {
  margin-top: 0.5rem;
  font-size: 1rem;
  color: var(--text-faint);
}

/* ─── Login card ─────────────────────────────────────────────── */
.login-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 420px;
}

.login-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.75rem;
  color: #f8fafc;
}

/* ─── Form ───────────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-group input {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text);
  font-size: 1rem;
  padding: 0.6rem 0.875rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* ─── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: 7px;
  font-size: 1rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background-color 0.15s;
}

.btn--primary {
  background-color: var(--accent);
  color: #fff;
}

.btn--primary:hover { background-color: var(--accent-hover); }

.btn--full { width: 100%; margin-top: 0.5rem; }

/* ─── Alerts ─────────────────────────────────────────────────── */
.alert {
  border-radius: 7px;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.alert--error {
  background-color: var(--danger-bg);
  border: 1px solid var(--danger);
  color: #fca5a5;
}

/* ─── Dashboard ──────────────────────────────────────────────── */
.dashboard-header {
  margin-bottom: 2.5rem;
}

.dashboard-header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 0.5rem;
  text-align: left;
}

.dashboard-header .subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  text-align: left;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.dashboard-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
}

.dashboard-card h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #f8fafc;
  margin-bottom: 0.6rem;
}

.dashboard-card h3 {
  font-size: 1.0rem;
  font-weight: 500;
  color: #f8fafc;
  margin-top: 0.3rem;
  margin-bottom: 0.3rem;
}

.dashboard-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  text-align: left;
}

.dashboard-card p.link {
  line-height: 1.2rem;
  text-align: left;
}

.dashboard-card a {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 0.8rem;
  text-align: left;
}

.dashboard-card hr {
  border: none;
  border-top: 1px solid var(--text-muted);
  opacity: 0.3; /* macht die Linie optisch feiner */
  margin-top: 0.5rem;
  margin-bottom: 0.3rem; 
}