/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header h1 {
    font-size: 28px;
    color: #2c3e50;
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-value {
    font-size: 32px;
    font-weight: bold;
    color: #3498db;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    color: #7f8c8d;
}

/* Filters */
.filters {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 250px;
    padding: 10px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.search-input:focus {
    outline: none;
    border-color: #3498db;
}

.filter-select {
    padding: 10px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 14px;
    background: white;
    cursor: pointer;
    transition: border-color 0.3s;
}

.filter-select:focus {
    outline: none;
    border-color: #3498db;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background: #2980b9;
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-secondary:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
}

.btn-text {
    background: transparent;
    color: #3498db;
}

.btn-text:hover {
    background: #ecf0f1;
}

.btn-block {
    width: 100%;
}

/* Table */
.table-container {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    overflow-x: auto;
}

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

.leads-table thead {
    background: #f8f9fa;
}

.leads-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: #2c3e50;
    border-bottom: 2px solid #e0e0e0;
}

.leads-table td {
    padding: 15px;
    border-bottom: 1px solid #f0f0f0;
}

.leads-table tbody tr {
    transition: background 0.2s;
    cursor: pointer;
}

.leads-table tbody tr:hover {
    background: #f8f9fa;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #7f8c8d;
}

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.status-active {
    background: #d4edda;
    color: #155724;
}

.status-closed {
    background: #f8d7da;
    color: #721c24;
}

.btn-view {
    padding: 5px 15px;
    font-size: 12px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-top: 20px;
    padding: 20px;
    flex-wrap: wrap;
}

#pageInfo {
    color: #7f8c8d;
    font-weight: 500;
}

#limitSelect {
    background: white;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    min-width: 80px;
}

#limitSelect:hover {
    border-color: #3498db;
}

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

.modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal-content {
    background: white;
    border-radius: 10px;
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-small {
    max-width: 500px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #e0e0e0;
}

.modal-header h2 {
    font-size: 24px;
    color: #2c3e50;
}

.modal-close {
    background: none;
    border: none;
    font-size: 32px;
    color: #7f8c8d;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: #2c3e50;
}

.modal-body {
    padding: 20px;
}

/* Lead Info */
.lead-info, .contact-info {
    margin-bottom: 30px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.info-label {
    font-size: 12px;
    color: #7f8c8d;
    font-weight: 500;
}

.info-value {
    font-size: 14px;
    color: #2c3e50;
}

/* Messages */
.messages-section h3 {
    margin-bottom: 15px;
    color: #2c3e50;
}

.messages-container {
    max-height: 400px;
    overflow-y: auto;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 5px;
}

.message {
    margin-bottom: 15px;
    padding: 10px 15px;
    border-radius: 8px;
    max-width: 70%;
}

.message-incoming {
    background: white;
    margin-right: auto;
    border: 1px solid #e0e0e0;
}

.message-outgoing {
    background: #3498db;
    color: white;
    margin-left: auto;
}

.message-sender {
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 5px;
}

.message-text {
    font-size: 14px;
    line-height: 1.4;
}

.message-time {
    font-size: 11px;
    opacity: 0.7;
    margin-top: 5px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input[type="checkbox"] {
    margin-right: 8px;
}

/* Info message */
.info-message {
    background: #e3f2fd;
    border-left: 4px solid #2196f3;
    padding: 12px 16px;
    margin: 15px 0;
    border-radius: 4px;
    font-size: 14px;
    color: #1976d2;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 15px;
    }
    
    .filters {
        flex-direction: column;
    }
    
    .search-input, .filter-select {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .table-container {
        overflow-x: scroll;
    }
    
    .leads-table {
        min-width: 800px;
    }
}