/* === Variables === */
:root {
    --bg-primary: #0b0c0e;
    --bg-secondary: #181b1f;
    --bg-tertiary: #1f2329;
    --bg-card: #242830;
    --border-color: #2d3139;
    --text-primary: #d4d7dc;
    --text-secondary: #9fa3a9;
    --text-muted: #6c7075;
    --accent-orange: #e26740;
    --accent-blue: #5794f2;
    --accent-green: #73bf69;
    --accent-red: #e02f44;
    --accent-yellow: #fade2a;
    --success: #73bf69;
    --warning: #fade2a;
    --error: #e02f44;
    --sidebar-width: 240px;
    --header-height: 70px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* === Sidebar === */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.logo h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.nav-menu {
    flex: 1;
    padding: 20px 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: none;
    border: none;
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    width: 100%;
    text-align: left;
}

.nav-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: var(--bg-tertiary);
    color: var(--accent-orange);
}

.nav-item svg {
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 10px;
    border-top: 1px solid var(--border-color);
}

/* === Main Content === */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    padding: 0;
}

/* === Header === */
.header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    z-index: 900;
}

.header-left h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 4px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.breadcrumb .separator {
    color: var(--text-muted);
}

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

.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 13px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
    animation: pulse 2s infinite;
}

.connection-status.connected .status-dot {
    background-color: var(--success);
}

.connection-status.error .status-dot {
    background-color: var(--error);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.time-range-select {
    padding: 8px 16px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

.time-range-select:hover {
    border-color: var(--accent-orange);
}

.refresh-btn {
    padding: 8px 12px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.refresh-btn:hover {
    background-color: var(--accent-orange);
    border-color: var(--accent-orange);
}

.refresh-btn:active {
    transform: rotate(180deg);
}

/* === View Container === */
.view-container {
    display: none;
    padding: 30px;
    animation: fadeIn 0.3s ease-in;
}

.view-container.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Metrics Grid === */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

@media (min-width: 1400px) {
    .metrics-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.metric-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    transition: var(--transition);
}

.metric-card:hover {
    border-color: var(--accent-orange);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

.metric-label {
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-icon {
    color: var(--accent-orange);
    opacity: 0.7;
}

.metric-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.metric-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.metric-change {
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 600;
}

.metric-change.up {
    color: var(--error);
    background-color: rgba(224, 47, 68, 0.1);
}

.metric-change.down {
    color: var(--success);
    background-color: rgba(115, 191, 105, 0.1);
}

.mini-chart {
    width: 80px;
    height: 30px;
}

/* === Charts Grid === */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.chart-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}

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

.chart-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-legend {
    display: flex;
    gap: 16px;
    font-size: 12px;
}

.chart-container {
    position: relative;
    height: 250px;
}

/* === Data Table === */
.data-table-section {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.table-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.search-input {
    padding: 8px 16px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    width: 250px;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-orange);
}

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

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

.data-table thead {
    background-color: var(--bg-tertiary);
}

.data-table th {
    padding: 12px 20px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 16px 20px;
    font-size: 14px;
    border-top: 1px solid var(--border-color);
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

.loading-cell {
    text-align: center;
    color: var(--text-muted);
    padding: 40px !important;
}

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-badge.running {
    background-color: rgba(115, 191, 105, 0.2);
    color: var(--success);
}

.status-badge.stopped {
    background-color: rgba(224, 47, 68, 0.2);
    color: var(--error);
}

.status-badge.paused {
    background-color: rgba(250, 222, 42, 0.2);
    color: var(--warning);
}

/* === Nodes/VMs/Storage Grids === */
.nodes-grid,
.vms-grid,
.storage-grid,
.network-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.node-card,
.vm-card,
.storage-card,
.network-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    transition: var(--transition);
}

.node-card:hover,
.vm-card:hover,
.storage-card:hover,
.network-card:hover {
    border-color: var(--accent-orange);
    transform: translateY(-2px);
}

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

.card-title {
    font-size: 18px;
    font-weight: 600;
}

.card-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
}

.info-label {
    color: var(--text-secondary);
}

.info-value {
    color: var(--text-primary);
    font-weight: 500;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-orange), var(--accent-blue));
    transition: width 0.5s ease;
}

.loading-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px;
    color: var(--text-muted);
    font-size: 16px;
}

/* === Modal === */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 90%;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 32px;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.close-btn:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

/* === Form === */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-orange);
}

.form-group small {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 32px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: #d15a35;
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.connection-message {
    margin-top: 20px;
    padding: 16px;
    border-radius: 6px;
    font-size: 14px;
    display: none;
}

.connection-message.success {
    display: block;
    background-color: rgba(115, 191, 105, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

.connection-message.error {
    display: block;
    background-color: rgba(224, 47, 68, 0.1);
    color: var(--error);
    border: 1px solid var(--error);
}

/* === Help Section === */
.help-section {
    margin-top: 32px;
    padding: 20px;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
}

.help-section h3 {
    font-size: 16px;
    margin-bottom: 16px;
    color: var(--accent-orange);
}

.help-section ol {
    padding-left: 24px;
}

.help-section li {
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.help-section strong {
    color: var(--text-primary);
}

/* === Responsive === */
@media (max-width: 1024px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .header {
        padding: 0 15px;
    }

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

    .nodes-grid,
    .vms-grid,
    .storage-grid,
    .network-grid {
        grid-template-columns: 1fr;
    }
}

/* === Scrollbar === */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-orange);
}

/* === Alert System === */
#alertContainer {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.alert-notification {
    background: var(--bg-card);
    border: 2px solid;
    border-radius: 8px;
    padding: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
}

.alert-notification.fade-out {
    animation: slideOut 0.3s ease;
    opacity: 0;
}

.alert-warning {
    border-color: var(--accent-yellow);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(250, 222, 42, 0.1) 100%);
}

.alert-critical {
    border-color: var(--accent-red);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(224, 47, 68, 0.1) 100%);
    animation: pulse-alert 2s infinite;
}

.alert-content {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.alert-message {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.4;
}

.alert-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    line-height: 1;
    flex-shrink: 0;
}

.alert-close:hover {
    color: var(--text-primary);
}

.alert-time {
    margin-top: 8px;
    font-size: 11px;
    color: var(--text-muted);
    text-align: right;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

@keyframes pulse-alert {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(224, 47, 68, 0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(224, 47, 68, 0.6);
    }
}

/* === Amélioration des métriques === */
.metric-details {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

.metric-subvalue {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 2px;
}