:root{--bg:#f4f5f7;--surface:#fff;--border:#e2e4e9;--text:#1a1d24;--text-muted:#6b7280;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-light:#eff6ff;--danger:#dc2626;--danger-light:#fef2f2;--success:#16a34a;--success-light:#f0fdf4;--warning:#d97706;--warning-light:#fffbeb;--radius:10px;--shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);--shadow-lg:0 10px 25px rgba(0,0,0,.08)}*{box-sizing:border-box;margin:0;padding:0}body,html{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5}a{color:inherit;text-decoration:none}.app-shell{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--surface);border-right:1px solid var(--border);padding:24px 16px;position:-webkit-sticky;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:4px}.sidebar-brand{font-size:18px;padding:8px 12px 20px;gap:10px}.sidebar-brand,.sidebar-brand .logo{font-weight:700;display:flex;align-items:center}.sidebar-brand .logo{width:32px;height:32px;border-radius:8px;background:var(--primary);color:#fff;justify-content:center}.nav-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:var(--text-muted);font-weight:500;transition:all .15s}.nav-link:hover{background:var(--bg);color:var(--text)}.nav-link.active{background:var(--primary-light);color:var(--primary)}.main{flex:1 1;padding:32px 40px;max-width:1200px;width:100%;margin:0 auto}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;flex-wrap:wrap;gap:16px}.page-title{font-size:24px;font-weight:700}.page-subtitle{color:var(--text-muted);font-size:14px;margin-top:2px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card-body{padding:20px 24px}.card-header{padding:16px 24px;border-bottom:1px solid var(--border);font-weight:600}.btn{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:8px;border:1px solid transparent;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s;background:var(--surface);color:var(--text);border-color:var(--border);font-family:inherit}.btn:hover{background:var(--bg)}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-hover)}.btn-danger{background:var(--surface);color:var(--danger);border-color:var(--border)}.btn-danger:hover{background:var(--danger-light);border-color:var(--danger)}.btn-sm{padding:6px 12px;font-size:13px}.btn-ghost{border-color:transparent;background:transparent}.btn:disabled{opacity:.5;cursor:not-allowed}.table{width:100%;border-collapse:collapse}.table th{text-align:left;padding:12px 16px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.03em;color:var(--text-muted)}.table td,.table th{border-bottom:1px solid var(--border)}.table td{padding:14px 16px}.table tr:last-child td{border-bottom:none}.table tbody tr:hover{background:var(--bg)}.table .num{text-align:right;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:16px;gap:16px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group.full{grid-column:1/-1}label{font-size:13px;font-weight:600;color:var(--text-muted)}input,select,textarea{padding:9px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:var(--surface);color:var(--text);width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}textarea{resize:vertical;min-height:70px}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}.badge-offen{background:var(--warning-light);color:var(--warning)}.badge-bezahlt{background:var(--success-light);color:var(--success)}.badge-storniert{background:var(--danger-light);color:var(--danger)}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:flex-start;justify-content:center;padding:60px 20px;z-index:50;overflow-y:auto}.modal{background:var(--surface);border-radius:14px;box-shadow:var(--shadow-lg);width:100%;max-width:560px}.modal-header{padding:20px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.modal-title{font-size:18px;font-weight:700}.modal-body{padding:24px}.modal-footer{padding:16px 24px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-3{gap:12px}.mt-4{margin-top:16px}.mb-4{margin-bottom:16px}.text-muted{color:var(--text-muted)}.text-right{text-align:right}.font-bold{font-weight:700}.num{font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.empty-state{padding:48px 24px;text-align:center;color:var(--text-muted)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:16px;gap:16px;margin-bottom:28px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow)}.stat-label{font-size:13px;color:var(--text-muted);font-weight:500}.stat-value{font-size:28px;font-weight:700;margin-top:4px}.toast{position:fixed;bottom:24px;right:24px;background:var(--text);color:#fff;padding:12px 20px;border-radius:10px;box-shadow:var(--shadow-lg);z-index:100;font-weight:500}.toast.error{background:var(--danger)}@media (max-width:768px){.sidebar{display:none}.main{padding:20px}.form-grid{grid-template-columns:1fr}}