:root {
    --primary: #3a6b6b;
    --primary-dark: #2a4f4f;
    --bg: #f5f7f6;
    --card-bg: #ffffff;
    --border: #e0e4e2;
    --text: #2b2f2e;
    --text-muted: #6b716f;
    --success: #3d8f5b;
    --warning: #c99a2e;
    --danger: #c0433e;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
}

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

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

.sidebar {
    width: 220px;
    background: var(--primary-dark);
    color: #fff;
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    flex-shrink: 0;
}
.sidebar-logo { font-weight: 700; font-size: 1.1rem; padding: 0 24px 24px; letter-spacing: 0.02em; }
.sidebar ul { list-style: none; padding: 0; margin: 0; flex-grow: 1; }
.sidebar li a {
    display: block;
    padding: 12px 24px;
    color: #dfe8e6;
}
.sidebar li a:hover { background: rgba(255,255,255,0.08); text-decoration: none; }
.sidebar-footer { padding: 16px 24px; border-top: 1px solid rgba(255,255,255,0.15); }
.user-info { font-size: 0.85rem; color: #cfe0dd; margin-bottom: 6px; }
.logout-link { font-size: 0.85rem; color: #fff; }

.content { flex-grow: 1; padding: 32px 40px; max-width: 1200px; }

h1 { font-size: 1.6rem; margin: 0 0 24px; }
h2 { font-size: 1.2rem; margin: 0 0 16px; }

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
}

.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.stat-card { text-align: center; }
.stat-number { font-size: 2rem; font-weight: 700; color: var(--primary-dark); }
.stat-label { color: var(--text-muted); font-size: 0.9rem; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
th { color: var(--text-muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:hover td { background: #fafbfa; }

.btn {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 9px 18px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    text-decoration: none;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn-secondary { background: #eee; color: var(--text); }
.btn-secondary:hover { background: #ddd; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #a03530; }
.btn-small { padding: 5px 12px; font-size: 0.82rem; }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }

form .field { margin-bottom: 16px; }
label { display: block; font-weight: 600; margin-bottom: 5px; font-size: 0.88rem; }
input[type=text], input[type=email], input[type=tel], input[type=date], input[type=time],
input[type=number], input[type=password], select, textarea {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid #ccd3d1;
    border-radius: 6px;
    font-size: 0.92rem;
    font-family: inherit;
}
textarea { resize: vertical; min-height: 80px; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 12px; font-size: 0.78rem; font-weight: 600; }
.badge-aktiv, .badge-bezahlt, .badge-stattgefunden, .badge-bestätigt { background: #dff0e5; color: var(--success); }
.badge-wartend, .badge-offen, .badge-geplant { background: #fbf1dd; color: var(--warning); }
.badge-archiviert, .badge-abgesagt, .badge-storniert, .badge-abgeschlossen { background: #f1f1f1; color: var(--text-muted); }
.badge-überfällig, .badge-nicht.erschienen { background: #f8e0df; color: var(--danger); }

.flash { padding: 12px 18px; border-radius: 6px; margin-bottom: 20px; font-size: 0.9rem; }
.flash-success { background: #dff0e5; color: var(--success); }
.flash-error { background: #f8e0df; color: var(--danger); }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tabs a { padding: 10px 16px; border-radius: 6px 6px 0 0; color: var(--text-muted); font-size: 0.9rem; }
.tabs a.active { background: var(--card-bg); border: 1px solid var(--border); border-bottom-color: var(--card-bg); color: var(--text); font-weight: 600; margin-bottom: -1px; }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--primary-dark); }
.login-box { background: #fff; padding: 40px; border-radius: var(--radius); width: 340px; }
.login-box h1 { font-size: 1.3rem; text-align: center; }

.text-muted { color: var(--text-muted); }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }
.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }