/* =========================================
   FRANKLY | DESIGN SYSTEM VARIABLES
========================================= */
:root {
    --bg-main: #0f172a;
    /* Slate 900 */
    --bg-card: #020617;
    /* Slate 950 */
    --border: #1e293b;
    /* Slate 800 */
    --text-main: #f8fafc;
    /* Slate 50 */
    --text-muted: #94a3b8;
    /* Slate 400 */

    --brand-blue: #3b82f6;
    --brand-blue-hover: #2563eb;
    --brand-emerald: #10b981;
    --brand-red: #ef4444;
}

/* =========================================
   GLOBAL RESET & TYPOGRAPHY
========================================= */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: system-ui, -apple-system, sans-serif;
    display: flex;
    min-height: 100vh;
}

/* =========================================
   LAYOUT: SIDEBAR & MAIN CONTENT
========================================= */
.sidebar {
    width: 250px;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.sidebar-logo {
    font-size: 1.25rem;
    font-weight: bold;
    letter-spacing: -0.025em;
    margin-bottom: 2.5rem;
}

.nav-menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0.375rem;
    transition: all 0.2s;
}

.nav-icon {
    width: 1.25rem;
    height: 1.25rem;
    opacity: 0.8;
}

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

.nav-item.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--brand-blue);
}

.nav-item.active-event {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--brand-emerald);
}

.logout-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    text-align: left;
    cursor: pointer;
    font-size: 0.875rem;
}

.logout-btn:hover {
    color: var(--text-main);
}

.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

/* =========================================
   D3 CHART TOOLTIPS
========================================= */
.tooltip {
    position: absolute;
    /* Forces it to float above the page */
    z-index: 9999;
    /* Ensures it stays on top of everything */
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    pointer-events: none;
    /* Prevents the mouse from getting "stuck" on the tooltip */
    opacity: 0;
    /* Starts hidden until D3 calls it */
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* =========================================
   COMPONENTS
========================================= */
/* Headers & Banners */
.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 1.5rem;
}

.page-title {
    font-size: 1.875rem;
    font-weight: bold;
    letter-spacing: -0.025em;
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.demo-banner {
    background-color: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: #bfdbfe;
    /* blue-200 */
}

.demo-badge {
    color: #60a5fa;
    font-weight: bold;
    text-transform: uppercase;
    margin-right: 0.5rem;
    letter-spacing: 0.05em;
}

/* Buttons & Inputs */
.btn {
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: bold;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: 0.2s;
}

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

.btn-primary:hover {
    background-color: var(--brand-blue-hover);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}

.btn-outline:hover {
    background: var(--border);
    color: var(--text-main);
}

.year-dropdown {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    color: white;
    padding: 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    cursor: pointer;
}

/* KPI Cards */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.kpi-title {
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.kpi-value {
    font-size: 1.5rem;
    font-weight: 800;
}

.text-emerald {
    color: var(--brand-emerald);
}

.text-blue {
    color: var(--brand-blue);
}

/* Tabs */
.tabs-container {
    border-bottom: 1px solid var(--border);
    margin-bottom: 2rem;
    display: flex;
    gap: 2rem;
}

.tab {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 1rem 0.25rem;
    cursor: pointer;
    transition: 0.2s;
}

.tab:hover {
    color: #cbd5e1;
    border-bottom-color: var(--border);
}

.tab.active {
    color: var(--brand-emerald);
    border-bottom-color: var(--brand-emerald);
}

/* Charts & Tables */
.chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.chart-title {
    font-size: 1.125rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.chart-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.chart-box {
    width: 100%;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.table-wrapper {
    max-height: 24rem;
    overflow-y: auto;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    margin-top: 1.5rem;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.data-table th {
    background-color: var(--bg-main);
    padding: 0.75rem 1rem;
    text-transform: uppercase;
    font-size: 0.75rem;
    cursor: pointer;
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table th:hover {
    color: var(--text-main);
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
}

.data-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}