:root {
    --primary-color: #2563eb;
    --primary-light: #60a5fa;
    --secondary-color: #3b82f6;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --sidebar-bg: #111827;
    --sidebar-text: #f9fafb;
}

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

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

.dashboard-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    position: fixed;
    height: 100vh;
    transition: all 0.3s ease;
    z-index: 100;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.logo h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #fff;
    letter-spacing: 0.5px;
}

.logo span {
    color: var(--primary-light);
}

.menu {
    flex-grow: 1;
}

.menu a {
    display: block;
    color: #9ca3af;
    text-decoration: none;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    transition: all 0.2s;
    font-weight: 500;
}

.menu a:hover,
.menu a.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.sidebar-footer {
    font-size: 0.8rem;
    color: #6b7280;
    text-align: center;
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 2rem;
    max-width: 1600px;
    transition: all 0.3s ease;
}

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

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    z-index: 50;
    margin: -2rem -2rem 2rem -2rem;
    border-bottom: 1px solid var(--border-color);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.toggle-btn {
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: background-color 0.2s;
}

.toggle-btn:hover {
    background-color: var(--border-color);
}

.header h1 {
    font-size: 1.8rem;
    color: var(--text-main);
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.year-selector select {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    background-color: #fff;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-main);
    cursor: pointer;
    outline: none;
}

/* KPIs grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.kpi-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    display: flex;
    align-items: center;
    transition: transform 0.2s;
}

.kpi-card:hover {
    transform: translateY(-2px);
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    margin-right: 1rem;
    flex-shrink: 0;
}

.ca-icon {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.result-icon {
    background: linear-gradient(135deg, #10b981, #059669);
}

.clients-icon {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.export-icon {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.kpi-details h3 {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    margin-top: 0.25rem;
}

/* Charts Grid */
.charts-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.charts-grid>* {
    flex: 1 1 calc(50% - 0.75rem);
    min-width: min(100%, 450px);
    max-width: 100%;
}

.chart-card {
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.chart-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.chart-body {
    position: relative;
    height: 350px;
    width: 100%;
    flex-grow: 1;
}

/* Tables and Views */
.view-section {
    display: none;
}

.view-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.table-card {
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    padding: 1.5rem;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

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

.data-table th {
    background-color: var(--bg-color);
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
}

.data-table tbody tr:hover {
    background-color: rgba(37, 99, 235, 0.05);
    /* very light primary color */
}

.data-table td {
    color: var(--text-main);
    font-size: 0.95rem;
    vertical-align: middle;
}

/* Table Action Icons */
.action-icon {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    margin: 0 0.3rem;
    transition: transform 0.2s;
}

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

.edit-icon {
    color: var(--primary-color);
}

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

/* Edit Inputs & Action Buttons */
.edit-input {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 0.4rem;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-main);
    background-color: var(--card-bg);
}

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

.action-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.4rem;
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

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

.save-btn:hover {
    background-color: #1d4ed8;
}

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

.delete-btn:hover {
    background-color: #b91c1c;
}

.text-danger {
    color: var(--danger-color);
}

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

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease-in-out;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    transform: translateY(-20px);
    transition: all 0.2s ease-in-out;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-overlay.active .modal-card {
    transform: translateY(0);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 500;
    color: var(--text-main);
    font-size: 0.9rem;
}

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

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding: 1rem;
    }

    .main-content {
        margin-left: 0;
        padding: 1rem;
    }

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

    .header {
        margin: -1rem -1rem 1rem -1rem;
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }

    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

/* DataTables Custom Styling */
.dataTables_wrapper .dataTables_filter input {
    border: 1px solid var(--border-color);
    border-radius: 0.4rem;
    padding: 0.4rem 0.8rem;
    margin-left: 0.5em;
    font-family: inherit;
}

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

.dataTables_wrapper .dataTables_length select {
    border: 1px solid var(--border-color);
    border-radius: 0.4rem;
    padding: 0.2rem 0.5rem;
    font-family: inherit;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    padding: 0.4em 0.8em;
    border-radius: 0.4rem;
    border: 1px solid transparent;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current,
.dataTables_wrapper .dataTables_paginate .paginate_button.current:hover {
    background: var(--primary-color);
    color: white !important;
    border: 1px solid var(--primary-color);
}

/* PDF Modal Specific Styles */
.pdf-modal-card {
    max-width: 100vw;
    width: 100%;
    height: 100vh;
    margin: 0;
    border-radius: 0;
    display: flex;
    flex-direction: column;
}

.pdf-container {
    flex: 1;
    min-height: 80vh;
    border: none;
    border-radius: 0;
    overflow: hidden;
}

/* =========================================
   USER DROPDOWN MENU
   ========================================= */
.user-dropdown {
    position: relative;
    display: inline-block;
}

.user-dropdown-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    padding: 0;
}

.user-dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 0.5rem;
    background-color: var(--card-bg);
    min-width: 200px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    border-radius: 0.5rem;
    overflow: hidden;
    z-index: 100;
    border: 1px solid var(--border-color);
}

.user-dropdown-content a {
    color: var(--text-main);
    padding: 0.75rem 1rem;
    text-decoration: none;
    display: block;
    font-size: 0.9rem;
    transition: background-color 0.2s;
}

.user-dropdown-content a:hover {
    background-color: var(--bg-hover);
    color: var(--primary-color);
}

.user-dropdown-separator {
    height: 1px;
    background-color: var(--border-color);
    margin: 0;
}

.user-dropdown-content a.danger-text {
    color: var(--danger-color);
}

.user-dropdown-content a.danger-text:hover {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.show-dropdown {
    display: block;
}

/* =========================================
   RESPONSIVE DESIGN (Media Queries)
   ========================================= */
@media (max-width: 1024px) {
    .charts-grid>* {
        flex: 1 1 100%;
        min-width: 100%;
    }

    .overview-filters {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-block {
        flex-wrap: wrap;
    }

    .chart-container {
        height: auto !important;
        min-height: 350px;
    }
}

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

    .sidebar {
        width: 100%;
        height: auto;
        position: static;
        padding: 1rem;
    }

    .main-content {
        margin-left: 0;
        padding: 1rem;
    }

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

    .header {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        gap: 0.5rem;
    }

    .header-left h1 {
        font-size: 1.2rem;
    }

    .header-left p.subtitle {
        display: none;
    }

    .header-left {
        width: auto;
        flex: 1;
    }

    .user-profile {
        width: auto;
    }
}