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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

/* Login Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.error {
    background: #fee;
    color: #c33;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    border: 1px solid #fcc;
}

/* Admin Panel Styles */
.admin-container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    overflow: hidden;
}

.admin-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-header h1 {
    margin: 0;
    font-size: 24px;
}

.logout-btn {
    background: rgba(255,255,255,0.2);
    color: white;
    padding: 8px 20px;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}
.login-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 8px 20px;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.5s;
    cursor: pointer;
}
.login-btn:hover {
    background: linear-gradient(135deg, #778BFF 0%, #8760B8 100%);
    transform: translateY(-2px);
    box-shadow: 0 0 12px rgba(118, 75, 162, 0.6);
    display: block;
    margin: 0 auto;
}


.logout-btn:hover {
    background: rgba(255,255,255,0.3);
}

.tabs {
    display: flex;
    background: #f5f5f5;
    border-bottom: 2px solid #ddd;
}

.tab-btn {
    padding: 15px 30px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    color: #666;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
}

.tab-btn:hover {
    background: #e9e9e9;
    color: #333;
}

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
    font-weight: bold;
}

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

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

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

.section-header h2 {
    color: #333;
    font-size: 22px;
}

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: white;
}

table th {
    background: #f8f9fa;
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: #333;
    border-bottom: 2px solid #ddd;
}

table td {
    padding: 12px;
    border-bottom: 1px solid #eee;
    color: #555;
}

table tr:hover {
    background: #f8f9fa;
}

.status-expired {
    background: #ffe0e0 !important;
}

.status-urgent {
    background: #fff3cd !important;
}

.status-warning {
    background: #fff8e1 !important;
}

.status-normal {
    background: white;
}

.status-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.status-badge.status-expired {
    background: #dc3545 !important;
    color: #FFFFFF;
}

.status-badge.status-urgent {
    background: #ffc107 !important;
    color: #000;
}

.status-badge.status-warning {
    background: #ff9800 !important;
    color: white;
}

.status-badge.status-normal {
    background: #28a745;
    color: white;
}

.days-left {
    font-weight: bold;
    font-size: 16px;
}

.empty {
    text-align: center;
    padding: 40px !important;
    color: #999;
    font-style: italic;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    margin: 2px;
}

.btn-edit {
    background: #17a2b8;
    color: white;
}

.btn-edit:hover {
    background: #138496;
}

.btn-delete {
    background: #dc3545;
    color: white;
}

.btn-delete:hover {
    background: #c82333;
}

.btn-renew {
    background: #28a745;
    color: white;
}

.btn-renew:hover {
    background: #218838;
}

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

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    position: relative;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
}

.close:hover {
    color: #000;
}

#modal-title {
    margin-bottom: 20px;
    color: #333;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 30px;
}

@media (max-width: 768px) {
    .admin-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    table {
        font-size: 12px;
    }
    
    table th,
    table td {
        padding: 8px;
    }
}

/* Filter Bar */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 15px;
    margin: 20px 0;
    padding: 12px 18px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
}

.filter-bar select,
.filter-bar input {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    min-width: 160px;
    background: #f9f9f9;
    transition: 0.3s ease;
}

.filter-bar input{
    min-width: 250px;
}

.filter-bar select:focus,
.filter-bar input:focus {
    border-color: #4a8bff;
    background: #fff;
    outline: none;
    box-shadow: 0 0 0 3px rgba(74,139,255,0.2);
}

.filter-bar label {
    font-size: 14px;
    color: #444;
    font-weight: 600;
}

.filter-bar .btn-filter {
    padding: 9px 18px;
    background: #4a8bff;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: 0.3s;
}

.filter-bar .btn-filter:hover {
    background: #2769e1;
}

/* Mobile Responsive */
@media(max-width: 768px) {
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    .filter-bar select,
    .filter-bar input,
    .filter-bar .btn-filter {
        width: 100%;
    }
}