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

:root {
    --primary-color: #0066FF;
    --secondary-color: #F8F9FA;
    --text-color: #212529;
    --text-secondary: #6C757D;
    --border-color: #DEE2E6;
    --hover-bg: #F1F3F5;
    --success-color: #28A745;
    --warning-color: #FFC107;
    --danger-color: #DC3545;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--secondary-color);
    color: var(--text-color);
    line-height: 1.6;
}

.header {
    background: white;
    border-bottom: 1px solid var(--border-color);
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    height: 40px;
    width: auto;
}

.app-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-color);
}

.operator-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--secondary-color);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.status-indicator.online {
    background: var(--success-color);
    box-shadow: 0 0 8px rgba(40, 167, 69, 0.5);
}

.container {
    display: flex;
    height: calc(100vh - 64px);
}

.sidebar {
    width: 260px;
    background: white;
    border-right: 1px solid var(--border-color);
    padding: 24px 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    position: relative;
}

.nav-item:hover {
    background: var(--hover-bg);
}

.nav-item.active {
    background: rgba(0, 102, 255, 0.1);
    border-left-color: var(--primary-color);
    color: var(--primary-color);
}

.nav-item span:first-of-type {
    flex: 1;
}

.badge {
    background: var(--danger-color);
    color: white;
    border-radius: 12px;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
}

.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
}

.section {
    display: none;
}

.section.active {
    display: block;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.section-header h1 {
    font-size: 28px;
    font-weight: 700;
}

.btn-primary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: #0052CC;
}

.btn-success {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--success-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    gap: 16px;
    align-items: center;
    transition: all 0.2s;
}

.stat-card:hover {
    box-shadow: var(--shadow);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.stat-icon.calls {
    background: var(--primary-color);
}

.stat-icon.tickets {
    background: var(--warning-color);
}

.stat-icon.emails {
    background: var(--success-color);
}

.stat-icon.time {
    background: var(--text-secondary);
}

.stat-info {
    flex: 1;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.dashboard-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
}

.recent-activity,
.quick-stats {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.recent-activity h2,
.quick-stats h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.activity-item {
    display: flex;
    gap: 16px;
    align-items: start;
    padding: 16px;
    background: var(--secondary-color);
    border-radius: 8px;
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.activity-item.call .activity-icon {
    background: var(--primary-color);
}

.activity-item.ticket .activity-icon {
    background: var(--warning-color);
}

.activity-item.email .activity-icon {
    background: var(--success-color);
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.activity-time {
    font-size: 13px;
    color: var(--text-secondary);
}

.activity-status {
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.activity-status.completed {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
}

.activity-status.pending {
    background: rgba(255, 193, 7, 0.1);
    color: var(--warning-color);
}

.activity-status.in-progress {
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary-color);
}

.quick-stats-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.quick-stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: var(--secondary-color);
    border-radius: 6px;
}

.quick-stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.quick-stat-value {
    font-weight: 600;
    font-size: 16px;
}

.calls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.call-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
}

.call-card.incoming {
    border-color: var(--success-color);
    background: rgba(40, 167, 69, 0.05);
}

.call-status {
    display: inline-block;
    padding: 4px 12px;
    background: var(--success-color);
    color: white;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.call-info {
    margin-bottom: 16px;
}

.call-number {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.call-time {
    font-size: 13px;
    color: var(--text-secondary);
}

.call-actions {
    display: flex;
    gap: 12px;
}

.btn-icon-success,
.btn-icon-danger {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    color: white;
}

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

.btn-icon-success:hover {
    background: #218838;
}

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

.btn-icon-danger:hover {
    background: #C82333;
}

.call-history {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.call-history h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.history-table {
    display: flex;
    flex-direction: column;
}

.history-header {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr 1fr;
    gap: 16px;
    padding: 12px 16px;
    background: var(--secondary-color);
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 8px;
}

.history-row {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr 1fr;
    gap: 16px;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

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

.status-badge.completed {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-text:hover {
    background: rgba(0, 102, 255, 0.1);
}

.tickets-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.ticket-column {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
}

.ticket-column h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ticket-count {
    background: var(--secondary-color);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 13px;
}

.ticket-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ticket-card {
    background: var(--secondary-color);
    border-left: 3px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.ticket-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.ticket-card.high {
    border-left-color: var(--danger-color);
}

.ticket-card.medium {
    border-left-color: var(--warning-color);
}

.ticket-card.low {
    border-left-color: var(--success-color);
}

.ticket-card.resolved {
    opacity: 0.7;
}

.ticket-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.ticket-id {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.ticket-priority {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
}

.ticket-card.high .ticket-priority {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
}

.ticket-card.medium .ticket-priority {
    background: rgba(255, 193, 7, 0.1);
    color: var(--warning-color);
}

.ticket-card h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
}

.ticket-card p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.ticket-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-secondary);
}

.ticket-source,
.ticket-assigned {
    font-weight: 600;
}

.email-list {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.email-item {
    display: grid;
    grid-template-columns: 200px 1fr 2fr 120px;
    gap: 16px;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s;
}

.email-item:hover {
    background: var(--hover-bg);
}

.email-item.unread {
    background: rgba(0, 102, 255, 0.05);
}

.email-item.unread .email-sender,
.email-item.unread .email-subject {
    font-weight: 600;
}

.email-sender {
    font-size: 14px;
}

.email-subject {
    font-size: 14px;
}

.email-preview {
    font-size: 13px;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.email-time {
    font-size: 13px;
    color: var(--text-secondary);
    text-align: right;
}

.filter-buttons {
    display: flex;
    gap: 8px;
}

.filter-btn {
    padding: 8px 16px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    background: var(--hover-bg);
}

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

.history-list {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.2s;
}

.history-item:hover {
    background: var(--hover-bg);
}

.history-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.history-icon.call {
    background: var(--primary-color);
}

.history-icon.ticket {
    background: var(--warning-color);
}

.history-icon.email {
    background: var(--success-color);
}

.history-content {
    flex: 1;
}

.history-title {
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 4px;
}

.history-details {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.history-time {
    font-size: 12px;
    color: var(--text-secondary);
}

@media (max-width: 1200px) {
    .dashboard-content {
        grid-template-columns: 1fr;
    }

    .tickets-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        flex-direction: row;
        overflow-x: auto;
        padding: 12px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .history-header,
    .history-row {
        grid-template-columns: 1fr;
    }

    .email-item {
        grid-template-columns: 1fr;
    }
}