:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --success: #16a34a;
    --danger: #dc2626;
    --gray: #6b7280;
    --gray-light: #f3f4f6;
    --border: #e5e7eb;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-light);
    color: #1f2937;
    line-height: 1.6;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 1rem;
}

.header {
    background: var(--primary);
    color: white;
    padding: 1.5rem 1rem;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.3rem;
}

.header p {
    opacity: 0.9;
    font-size: 0.95rem;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.card h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: all 0.2s;
    min-height: 44px;
}

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

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

.btn-success {
    background: var(--success);
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-secondary {
    background: var(--gray);
    color: white;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    min-height: 36px;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #374151;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.search-box {
    position: sticky;
    top: 0;
    background: white;
    padding: 1rem;
    border-bottom: 2px solid var(--border);
    z-index: 10;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quantity-btn {
    width: 36px;
    height: 36px;
    border: 2px solid var(--primary);
    background: white;
    color: var(--primary);
    border-radius: 6px;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quantity-btn:active {
    background: var(--primary);
    color: white;
}

.quantity-display {
    min-width: 40px;
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
}

.warenkorb-badge {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--success);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    font-weight: 700;
    cursor: pointer;
    z-index: 100;
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #34d399;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #f87171;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #60a5fa;
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray);
}

.footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--gray);
    font-size: 0.85rem;
    margin-top: 3rem;
}

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

.mobile-menu-toggle {
    display: none;
    background: white;
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 1.2rem;
    cursor: pointer;
    position: absolute;
    right: 1rem;
    top: 0.75rem;
}

.nav-menu {
    display: flex;
    gap: 1rem;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    font-weight: 600;
    background: var(--gray-light);
}

@media (max-width: 640px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0;
        padding: 0 !important;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu a {
        padding: 0.75rem 1rem !important;
        border-bottom: 1px solid var(--border) !important;
        white-space: normal !important;
    }
    
    .container {
        padding: 0.75rem !important;
    }

    .card {
        padding: 1rem;
    }
}

@media print {
    body {
        background: white;
    }
    
    .no-print {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        page-break-inside: avoid;
    }
}