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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #2c3e7a 0%, #1a2550 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, #ecf0f1, #dfe6e9);
    color: #2c3e50;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 3px solid #3498db;
}

.header h1 {
    font-size: 24px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 2px solid #e9ecef;
}

.nav-tab {
    padding: 15px 25px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: #666;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

.nav-tab.active {
    background: white;
    color: #2c3e50;
    border-bottom-color: #3498db;
}

.nav-tab:hover {
    background: #e9ecef;
}

.tab-content {
    display: none;
    padding: 30px;
    min-height: 600px;
}

.tab-content.active {
    display: block;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-right: 10px;
    margin-bottom: 10px;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.btn-success {
    background: #27ae60;
    color: white;
}

.btn-success:hover {
    background: #229954;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.3);
}

.btn-warning {
    background: #f39c12;
    color: white;
}

.btn-warning:hover {
    background: #e67e22;
}

.btn-danger {
    background: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
}

.card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    border: 1px solid #e9ecef;
}

.card h3 {
    margin-bottom: 15px;
    color: #2c3e50;
    font-size: 18px;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    border-radius: 15px;
    padding: 30px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.status-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-draft { background: #e9ecef; color: #495057; }
.status-released { background: #d4edda; color: #155724; }
.status-in_progress { background: #fff3cd; color: #856404; }
.status-partially_delivered { background: #cce5ff; color: #004085; }
.status-delivered { background: #d1ecf1; color: #0c5460; }
.status-closed { background: #e2e3e5; color: #383d41; }
.status-cancelled { background: #f8d7da; color: #721c24; }

.role-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    color: white;
}

.role-admin { background: #27ae60; }
.role-employee { background: #3498db; }
.role-supplier { background: #f39c12; }

.capability-tag {
    display: inline-block;
    padding: 2px 8px;
    margin: 2px;
    background: #e8f4fd;
    color: #2980b9;
    border-radius: 12px;
    font-size: 11px;
}

/* Tablet */
@media (max-width: 768px) {
    body { padding: 0; }
    .container { margin: 0; border-radius: 0; box-shadow: none; }
    .header { flex-direction: column; gap: 10px; padding: 15px; text-align: center; }
    .header h1 { font-size: 18px; }
    .header-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: center; }
    .tab-content { padding: 15px; min-height: auto; }
    .nav-tabs { flex-wrap: wrap; }
    .nav-tab { padding: 10px 12px; font-size: 13px; min-width: 0; flex: 1 1 auto; text-align: center; }
    .card { padding: 15px; }
    .card h3 { font-size: 16px; }
    .btn { padding: 10px 16px; font-size: 13px; margin-right: 5px; margin-bottom: 5px; }
    .modal-content { width: 95%; padding: 20px; max-height: 90vh; }
}

/* Small phone */
@media (max-width: 480px) {
    .header h1 { font-size: 15px; }
    .header-actions { width: 100%; justify-content: center; }
    .header-actions .btn { padding: 5px 10px; font-size: 11px; }
    .nav-tab { padding: 8px 6px; font-size: 11px; flex: 1 1 30%; }
    .tab-content { padding: 10px; }
    .card { padding: 12px; }
    .form-group input, .form-group select, .form-group textarea { padding: 10px; font-size: 14px; }
    .modal-content { padding: 15px; border-radius: 10px; }
}