/* ============================================
   DATA ANALYTICS & BI PLATFORM - STYLES
   ============================================ */

/* CSS Variables */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-bg: #0f172a;
    --dark-card: #1e293b;
    --dark-border: #334155;
    --light-bg: #f8fafc;
    --light-card: #ffffff;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --sidebar-width: 260px;
    --header-height: 70px;
    --transition: all 0.3s ease;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   SIDEBAR STYLES
   ============================================ */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--dark-card) 0%, #0f172a 100%);
    border-right: 1px solid var(--dark-border);
    padding: 20px;
    z-index: 1000;
    transition: var(--transition);
    overflow-y: auto;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0 30px;
    border-bottom: 1px solid var(--dark-border);
    margin-bottom: 20px;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    list-style: none;
}

.nav-item {
    margin-bottom: 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-weight: 500;
}

.nav-link:hover, .nav-link.active {
    background: linear-gradient(90deg, rgba(37, 99, 235, 0.2) 0%, transparent 100%);
    color: var(--primary-light);
    border-left: 3px solid var(--primary-color);
}

.nav-link i {
    font-size: 20px;
    width: 24px;
}

.sidebar-footer {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--dark-border);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.user-details h4 {
    font-size: 14px;
    color: var(--text-primary);
}

.user-details p {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 30px;
    min-height: 100vh;
    transition: var(--transition);
}

/* Header */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.header-left h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 5px;
}

.header-left p {
    color: var(--text-secondary);
    font-size: 14px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-box {
    position: relative;
}

.search-box input {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    padding: 12px 40px 12px 45px;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    width: 280px;
    font-size: 14px;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-box i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.notification-btn {
    position: relative;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    width: 45px;
    height: 45px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: var(--danger-color);
    border-radius: 50%;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   KPI CARDS
   ============================================ */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 30px;
}

.kpi-card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    opacity: 0;
    transition: var(--transition);
}

.kpi-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.kpi-card:hover::before {
    opacity: 1;
}

.kpi-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.kpi-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.kpi-icon.blue { background: rgba(37, 99, 235, 0.15); color: var(--primary-light); }
.kpi-icon.green { background: rgba(16, 185, 129, 0.15); color: var(--secondary-color); }
.kpi-icon.orange { background: rgba(245, 158, 11, 0.15); color: var(--accent-color); }
.kpi-icon.red { background: rgba(239, 68, 68, 0.15); color: var(--danger-color); }

.kpi-trend {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    padding: 4px 8px;
    border-radius: 20px;
}

.kpi-trend.up {
    background: rgba(16, 185, 129, 0.15);
    color: var(--secondary-color);
}

.kpi-trend.down {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
}

.kpi-value {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 5px;
}

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

/* ============================================
   CHARTS SECTION
   ============================================ */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    margin-bottom: 30px;
}

.chart-card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius);
    padding: 24px;
}

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

.chart-header h3 {
    font-size: 18px;
    font-weight: 600;
}

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

.chart-btn {
    background: transparent;
    border: 1px solid var(--dark-border);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

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

.chart-container {
    height: 280px;
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    padding: 20px 0;
    border-bottom: 1px solid var(--dark-border);
}

.chart-bar {
    width: 40px;
    background: linear-gradient(180deg, var(--primary-color), var(--primary-dark));
    border-radius: 6px 6px 0 0;
    position: relative;
    transition: var(--transition);
    cursor: pointer;
}

.chart-bar:hover {
    background: linear-gradient(180deg, var(--primary-light), var(--primary-color));
    transform: scaleY(1.05);
    transform-origin: bottom;
}

.chart-bar::after {
    content: attr(data-value);
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    opacity: 0;
    transition: var(--transition);
}

.chart-bar:hover::after {
    opacity: 1;
}

.chart-labels {
    display: flex;
    justify-content: space-around;
    padding-top: 15px;
    color: var(--text-secondary);
    font-size: 13px;
}

/* Donut Chart */
.donut-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    position: relative;
}

.donut-chart {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: conic-gradient(
        var(--primary-color) 0deg 126deg,
        var(--secondary-color) 126deg 216deg,
        var(--accent-color) 216deg 288deg,
        var(--danger-color) 288deg 360deg
    );
    position: relative;
}

.donut-chart::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: var(--dark-card);
    border-radius: 50%;
}

.donut-center {
    position: absolute;
    text-align: center;
    z-index: 1;
}

.donut-center span {
    display: block;
    font-size: 24px;
    font-weight: 700;
}

.donut-center small {
    color: var(--text-secondary);
    font-size: 12px;
}

.donut-legend {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

/* ============================================
   DATA TABLE
   ============================================ */
.table-card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 30px;
}

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

.table-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.table-filter {
    display: flex;
    gap: 10px;
}

.filter-select {
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    color: var(--text-primary);
    padding: 10px 15px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    cursor: pointer;
}

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

.data-table th,
.data-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--dark-border);
}

.data-table th {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tr:hover {
    background: rgba(37, 99, 235, 0.05);
}

.data-table td {
    font-size: 14px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.status-badge.active {
    background: rgba(16, 185, 129, 0.15);
    color: var(--secondary-color);
}

.status-badge.pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-color);
}

.status-badge.inactive {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.action-btns {
    display: flex;
    gap: 8px;
}

.action-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-btn.edit {
    background: rgba(37, 99, 235, 0.15);
    color: var(--primary-light);
}

.action-btn.delete {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
}

.action-btn:hover {
    transform: scale(1.1);
}

/* ============================================
   ANALYTICS PAGE STYLES
   ============================================ */
.analytics-filters {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 30px;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: flex-end;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 8px;
}

.filter-group input,
.filter-group select {
    width: 100%;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    color: var(--text-primary);
    padding: 12px 15px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
}

.filter-group input:focus,
.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.filter-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 30px;
}

.metric-card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius);
    padding: 24px;
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.metric-header h4 {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.metric-value {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 10px;
}

.metric-change {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.metric-change.positive {
    color: var(--secondary-color);
}

.metric-change.negative {
    color: var(--danger-color);
}

/* Progress Bars */
.progress-list {
    margin-top: 20px;
}

.progress-item {
    margin-bottom: 20px;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 13px;
}

.progress-label span:first-child {
    color: var(--text-primary);
}

.progress-label span:last-child {
    color: var(--text-secondary);
}

.progress-bar {
    height: 8px;
    background: var(--dark-bg);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 1s ease;
}

.progress-fill.blue { background: var(--primary-color); }
.progress-fill.green { background: var(--secondary-color); }
.progress-fill.orange { background: var(--accent-color); }
.progress-fill.red { background: var(--danger-color); }

/* ============================================
   REPORTS PAGE STYLES
   ============================================ */
.reports-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.create-report-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.create-report-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.reports-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 30px;
}

.report-card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
}

.report-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.report-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
}

.report-icon.pdf { background: rgba(239, 68, 68, 0.15); color: var(--danger-color); }
.report-icon.excel { background: rgba(16, 185, 129, 0.15); color: var(--secondary-color); }
.report-icon.csv { background: rgba(37, 99, 235, 0.15); color: var(--primary-light); }

.report-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.report-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 15px;
}

.report-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--dark-border);
    font-size: 13px;
    color: var(--text-secondary);
}

.report-actions {
    display: flex;
    gap: 8px;
}

.report-btn {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.report-btn.download {
    background: var(--primary-color);
    color: white;
}

.report-btn.view {
    background: transparent;
    border: 1px solid var(--dark-border);
    color: var(--text-secondary);
}

.report-btn:hover {
    transform: scale(1.05);
}

/* Recent Reports Table */
.recent-reports h3 {
    font-size: 18px;
    margin-bottom: 20px;
}

/* ============================================
   PAGINATION
   ============================================ */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--dark-border);
}

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

.pagination-btns {
    display: flex;
    gap: 8px;
}

.page-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--dark-border);
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* ============================================
   RESPONSIVE STYLES
   ============================================ */
@media (max-width: 1200px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .reports-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
  
}

@media (max-width: 768px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .top-header {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 15px;
        align-items: center;
    }
    
    .header-left {
        order: 2;
        flex: 1;
        min-width: 150px;
    }
    
    .header-right {
        order: 1;
        width: auto;
        flex-wrap: nowrap;
        gap: 10px;
    }
    
    .search-box {
        display: none;
    }
    
    .reports-grid {
        grid-template-columns: 1fr;
    }
    
    .table-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .table-filter {
        width: 100%;
    }
    
    .filter-select {
        flex: 1;
    }
    
    .data-table {
        font-size: 12px;
    }
    
    .data-table th, 
    .data-table td {
        padding: 10px 8px;
    }
}

@media (max-width: 576px) {
    .main-content {
        padding: 15px;
        padding-top: 80px;
    }
    
    .header-left h1 {
        font-size: 22px;
    }
    
    .kpi-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .kpi-card {
        padding: 20px;
    }
    
    .kpi-value {
        font-size: 26px;
    }
    
    .chart-container {
        height: 200px;
    }
    
    .chart-bar {
        width: 25px;
    }
    
    .analytics-filters {
        flex-direction: column;
    }
    
    .filter-group {
        width: 100%;
    }
    
    .pagination {
        flex-direction: column;
        gap: 15px;
    }
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background: var(--primary-color);
    border: none;
    width: 45px;
    height: 45px;
    border-radius: var(--radius-sm);
    color: white;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

@media (max-width: 992px) {
    .menu-toggle {
        display: flex;
    }
}

/* Overlay for mobile */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

.overlay.active {
    display: block;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.kpi-card, .chart-card, .table-card, .report-card, .metric-card {
    animation: fadeIn 0.5s ease forwards;
}

.kpi-card:nth-child(1) { animation-delay: 0.1s; }
.kpi-card:nth-child(2) { animation-delay: 0.2s; }
.kpi-card:nth-child(3) { animation-delay: 0.3s; }
.kpi-card:nth-child(4) { animation-delay: 0.4s; }