:root {
    --color-bg: #f4f2f9;
    --color-card: #ffffff;
    --color-text: #221c2e;
    --color-muted: #6b6478;
    --color-primary: #6d28d9;      /* Violett, wie im Referenzdesign */
    --color-primary-dark: #4c1d95;
    --color-sidebar-bg: #1e1235;   /* dunkle Sidebar */
    --color-sidebar-text: #cabfe0;
    --color-sidebar-active: #6d28d9;
    --color-accent: #d4a017;
    --color-border: #e6e1f0;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
}

a { color: var(--color-primary); text-decoration: none; }

/* ---------------------------------------------------------------- */
/* Layout: Sidebar (Desktop) + Topbar                                */
/* ---------------------------------------------------------------- */

.app-shell { display: flex; min-height: 100vh; }

.sidebar {
    display: none;
    flex-direction: column;
    width: 240px;
    background: var(--color-sidebar-bg);
    color: var(--color-sidebar-text);
    padding: 20px 0;
    flex-shrink: 0;
}
.sidebar .logo {
    color: #fff;
    font-weight: 700;
    font-size: 1.05rem;
    padding: 0 20px 20px;
    display: block;
    letter-spacing: 0.3px;
}
.sidebar .logo small { display: block; font-weight: 400; font-size: 0.7rem; color: var(--color-sidebar-text); }
.sidebar nav { display: flex; flex-direction: column; }
.sidebar nav a {
    color: var(--color-sidebar-text);
    padding: 10px 20px;
    font-size: 0.9rem;
    border-left: 3px solid transparent;
}
.sidebar nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.sidebar nav a.active {
    background: var(--color-sidebar-active);
    color: #fff;
    border-left-color: #fff;
}
.sidebar nav a.disabled { opacity: 0.4; pointer-events: none; }
.sidebar .logout-link { margin-top: auto; padding: 14px 20px; }

.main-column { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 0 16px;
    height: 60px;
}

.topbar .mobile-logo { font-weight: 700; color: var(--color-primary); }
.topnav-desktop { display: none; gap: 16px; align-items: center; }
.hamburger { background: none; border: none; font-size: 1.4rem; cursor: pointer; color: var(--color-primary); }

.btn-primary {
    background: var(--color-primary);
    color: #fff !important;
    padding: 8px 14px;
    border-radius: var(--radius);
}

.mobile-nav {
    display: none;
    flex-direction: column;
    background: var(--color-sidebar-bg);
}
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: 12px 16px; border-top: 1px solid rgba(255,255,255,0.08); color: var(--color-sidebar-text); }

.bottom-nav {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    display: flex;
    justify-content: space-around;
    background: var(--color-card);
    border-top: 1px solid var(--color-border);
    height: 56px;
    z-index: 10;
}
.bottom-nav a {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--color-muted);
}

.content {
    padding: 16px;
    padding-bottom: 72px; /* Platz für bottom-nav */
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
}

.card {
    background: var(--color-card);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: 0 1px 3px rgba(31, 18, 53, 0.08);
    margin-bottom: 16px;
}

/* Statistik-Karten (Dashboard-Look wie im Referenzdesign) */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}
.stat-card {
    background: var(--color-card);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: 0 1px 3px rgba(31, 18, 53, 0.08);
}
.stat-card .stat-icon {
    width: 36px; height: 36px;
    background: #ede8fb;
    color: var(--color-primary);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 8px;
    font-weight: 700;
}
.stat-card .stat-label { font-size: 0.7rem; text-transform: uppercase; color: var(--color-muted); letter-spacing: 0.4px; }
.stat-card .stat-value { font-size: 1.5rem; font-weight: 700; }
.stat-card .stat-sub { font-size: 0.75rem; color: var(--color-muted); }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 4px; font-size: 0.9rem; }
.form-group input[type=text],
.form-group input[type=email],
.form-group input[type=password],
.form-group input[type=number],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
}

.checkbox-row { display: flex; align-items: flex-start; gap: 8px; font-size: 0.85rem; margin-bottom: 12px; }
.checkbox-row input { margin-top: 3px; }

button[type=submit], .btn {
    width: 100%;
    padding: 12px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    cursor: pointer;
}
.btn.btn-danger { background: #9b1c1c; }
.btn.btn-outline { background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary); }

.alert { padding: 12px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.9rem; }
.alert-error { background: #fde8e8; color: #9b1c1c; }
.alert-success { background: #e9f9ee; color: #146c2e; }

.field-error { color: #9b1c1c; font-size: 0.8rem; margin-top: 4px; }

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.75rem;
    background: #ede8fb;
    color: var(--color-primary);
}
.badge.badge-muted { background: #eee; color: var(--color-muted); }

table.data-table { width: 100%; border-collapse: collapse; }
table.data-table th, table.data-table td { text-align: left; padding: 8px; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; }
table.data-table th { color: var(--color-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; }

.inline-form { display: inline-flex; gap: 6px; align-items: center; }

/* Desktop */
@media (min-width: 768px) {
    .sidebar { display: flex; }
    .topnav-desktop { display: flex; }
    .hamburger { display: none; }
    .bottom-nav { display: none; }
    .content { max-width: 1100px; padding-bottom: 32px; }
    .topbar .mobile-logo { display: none; }
}