/* ==========================================================================
   RTIH Dashboard - Executive Reporting Theme
   Theme: Clean, Modern, Minimal, White Background
   ========================================================================== */

:root {
    /* Color Palette (Clean & Professional) */
    --royal-blue: #1E3A8A;
    --royal-blue-light: #3B82F6;
    --deep-purple: #5B21B6;
    
    /* Backgrounds */
    --bg-main: #F8FAFC;       /* Soft light gray/blue for body */
    --bg-card: #FFFFFF;       /* Pure white for cards */
    --border-color: #E2E8F0;  /* Subtle gray for borders */
    
    /* Text Colors */
    --text-primary: #0F172A;  /* Dark slate */
    --text-secondary: #475569; /* Slate gray */
    --text-muted: #64748B;
    
    /* Status Colors */
    --status-success: #10B981;
    --status-warning: #F59E0B;
    --status-danger: #EF4444;
    --status-info: #3B82F6;
    
    /* Pastel Colors for Charts & Accents */
    --pastel-blue: #DBEAFE;
    --pastel-purple: #EDE9FE;
    --pastel-green: #D1FAE5;
    --pastel-yellow: #FEF3C7;
    --pastel-red: #FEE2E2;
    --pastel-teal: #CCFBF1;
    
    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-accent: 'Poppins', sans-serif;
    
    /* Effects (Minimal) */
    --transition-smooth: all 0.2s ease-in-out;
    --shadow-soft: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-primary);
    overflow: hidden; /* App container handles scrolling */
    -webkit-font-smoothing: antialiased;
    height: 100vh;
    width: 100vw;
}

/* ==========================================================================
   Loading Screen
   ========================================================================== */
.loader-container {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: #FFFFFF;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}

.loader-container.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--royal-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   App Layout
   ========================================================================== */
.app-container {
    display: grid;
    grid-template-columns: 260px 1fr;
    height: 100vh;
    width: 100%;
}

@media (max-width: 992px) {
    .app-container {
        grid-template-columns: 1fr;
    }
    .sidebar {
        transform: translateX(-100%);
        position: fixed !important;
        z-index: 1000;
    }
    .sidebar.open {
        transform: translateX(0);
    }
}

/* ==========================================================================
   Sidebar
   ========================================================================== */
.sidebar {
    background: #FFFFFF;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: transform 0.3s ease;
}

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

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

.logo-icon {
    color: var(--royal-blue);
    width: 28px;
    height: 28px;
}

.logo h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--royal-blue);
}

.mobile-close-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
}

@media (max-width: 992px) {
    .mobile-close-btn {
        display: block;
    }
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 24px 0;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: #CBD5E1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94A3B8;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    border-left: 3px solid transparent;
}

.sidebar-nav li a i {
    width: 20px;
    height: 20px;
}

.sidebar-nav li a:hover, .sidebar-nav li.active a {
    color: var(--royal-blue);
    background-color: var(--pastel-blue);
    border-left-color: var(--royal-blue);
}

.sidebar-nav li a:hover i, .sidebar-nav li.active a i {
    color: var(--royal-blue);
}

/* ==========================================================================
   Header
   ========================================================================== */
.main-content {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 32px;
    background: #FFFFFF;
    border-bottom: 1px solid var(--border-color);
    z-index: 10;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.header-titles h1 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--text-primary);
}

.header-titles p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.mobile-toggle-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}

@media (max-width: 992px) {
    .mobile-toggle-btn {
        display: block;
    }
    .header-titles {
        display: none;
    }
}

.header-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.search-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 6px;
    width: 250px;
    transition: var(--transition-smooth);
}

.search-bar:focus-within {
    border-color: var(--royal-blue-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-bar i {
    color: var(--text-muted);
    width: 16px;
    height: 16px;
}

.search-bar input {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    width: 100%;
    outline: none;
}

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

.btn-outline {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
}

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

/* ==========================================================================
   Dashboard Content Area
   ========================================================================== */
.dashboard-scroll-area {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
    background-color: var(--bg-main);
}

.dashboard-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.section-active {
    display: block;
}

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

.section-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

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

/* ==========================================================================
   Cards & Layouts
   ========================================================================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}

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

.card-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

/* Top KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.kpi-card {
    padding: 20px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
}

/* Pastel Assignments for KPI cards */
.kpi-card:nth-child(1) { background: var(--pastel-blue); border-color: #BFDBFE; }
.kpi-card:nth-child(2) { background: var(--pastel-purple); border-color: #DDD6FE; }
.kpi-card:nth-child(3) { background: var(--pastel-green); border-color: #A7F3D0; }
.kpi-card:nth-child(4) { background: var(--pastel-yellow); border-color: #FDE68A; }
.kpi-card:nth-child(5) { background: var(--pastel-teal); border-color: #99F6E4; }
.kpi-card:nth-child(6) { background: var(--pastel-red); border-color: #FECACA; }

.kpi-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.kpi-value {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

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

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* Compact Snapshot Cards */
.snapshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.snapshot-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.snapshot-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.snapshot-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--royal-blue);
    font-family: var(--font-heading);
}

/* ==========================================================================
   Tables
   ========================================================================== */
.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
}

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

.data-table th {
    padding: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-main);
    border-bottom: 2px solid var(--border-color);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
}

.data-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.95rem;
}

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

/* Badges / Status Pills */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-blue { background: var(--pastel-blue); color: #1D4ED8; }
.badge-green { background: var(--pastel-green); color: #047857; }
.badge-purple { background: var(--pastel-purple); color: #6D28D9; }
.badge-yellow { background: var(--pastel-yellow); color: #B45309; }
.badge-gray { background: #F1F5F9; color: var(--text-secondary); }

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}