:root {
    /* Color Palette */
    --bg-dark: #1a1a2e;
    --text-light: #e0e0e0;
    --text-inactive: #b0b0d0;
    --text-highlight: #c9c9f0;
    --text-white: #ffffff;

    --container-bg: rgba(45, 45, 70, 0.4);
    --navbar-bg: rgba(60, 60, 90, 0.5);
    --card-bg: rgba(60, 60, 90, 0.5);
    --chart-bg: rgba(40, 40, 60, 0.7);
    --hover-bg: rgba(90, 90, 120, 0.3);
    
    --active-gradient: linear-gradient(135deg, rgba(80, 80, 150, 0.7), rgba(120, 120, 200, 0.7));
    
    --border-color-translucent: rgba(255, 255, 255, 0.18);
    --border-color-light: rgba(255, 255, 255, 0.1);
    --border-color-active: rgba(255, 255, 255, 0.3);

    --shadow-color-dark: rgba(0, 0, 0, 0.37);
    --shadow-color-medium: rgba(0, 0, 0, 0.2);
    --shadow-color-light: rgba(0, 0, 0, 0.25);
    --shadow-color-inset: rgba(0, 0, 0, 0.5);

    --glow-color: rgba(100, 100, 255, 0.3);
    --glow-color-hover: rgba(100, 100, 255, 0.5);
    --glow-color-active: rgba(100, 100, 255, 0.8);
    --glow-color-active-inset: rgba(100, 100, 255, 0.6);
    --glow-color-header: rgba(100, 100, 255, 0.4);

    --risk-low: #4CAF50;
    --risk-moderate: #FFC107;
    --risk-high: #F44336;

    --loader-secondary: rgba(255, 255, 255, 0.3);
    --loader-primary: #3498db;

    /* Sizing & Radius */
    --border-radius-main: 15px;
    --border-radius-card: 10px;
    --border-radius-nav: 8px;
    --blur-intensity: 10px;
}

/* General Body Styles for Dark Theme */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    box-sizing: border-box;
}

/* Main Container for Layout */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 20px auto;
    padding: 20px;
    background: var(--container-bg);
    border-radius: var(--border-radius-main);
    box-shadow: 0 8px 32px 0 var(--shadow-color-dark);
    backdrop-filter: blur(var(--blur-intensity));
    -webkit-backdrop-filter: blur(var(--blur-intensity));
    border: 1px solid var(--border-color-translucent);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Navigation Bar Styling with Glassmorphism */
.navbar {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 15px 20px;
    background: var(--navbar-bg);
    border-radius: var(--border-radius-card);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-color-light);
    box-shadow: 0 4px 15px var(--shadow-color-medium);
}

.nav-item {
    background-color: transparent;
    border: none;
    padding: 10px 20px;
    color: var(--text-inactive);
    font-size: 1.1em;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--border-radius-nav);
    transition: all 0.3s ease-in-out;
    text-shadow: 0 0 5px var(--glow-color);
}

.nav-item:hover {
    color: var(--text-white);
    background-color: var(--hover-bg);
    box-shadow: 0 0 10px var(--glow-color-hover);
    transform: translateY(-2px);
}

.nav-item.active {
    color: var(--text-white);
    background: var(--active-gradient);
    box-shadow: 0 0 15px var(--glow-color-active), 0 0 20px var(--glow-color-active-inset) inset;
    border: 1px solid var(--border-color-active);
    pointer-events: none;
}

/* Content Sections Styling */
.content-section {
    background: var(--container-bg);
    border-radius: var(--border-radius-card);
    padding: 25px;
    box-shadow: 0 4px 20px var(--shadow-color-light);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out, height 0.5s ease-in-out;
    display: none;
    flex-direction: column;
    gap: 20px;
}

.content-section.active {
    display: flex;
    opacity: 1;
    height: auto;
    overflow: visible;
    transform: translateY(0);
}

.content-section.hidden {
    display: none;
    opacity: 0;
    height: 0;
    overflow: hidden;
    transform: translateY(20px);
}

.content-section h2 {
    color: var(--text-highlight);
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 1.8em;
    text-align: center;
    text-shadow: 0 0 8px var(--glow-color-header);
}

/* Map Placeholder */
#map {
    width: 100%;
    height: 650px;
    background-color: #333; /* Fallback */
    border-radius: var(--border-radius-nav);
    margin-bottom: 20px;
    border: 1px solid var(--border-color-light);
    box-shadow: inset 0 0 10px var(--shadow-color-inset);
}

/* Analysis Card Container */
#analysis-card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.analysis-card {
    background: var(--card-bg);
    border-radius: var(--border-radius-card);
    padding: 20px;
    border: 1px solid var(--border-color-light);
    box-shadow: 0 4px 15px var(--shadow-color-medium);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    display: flex;
    flex-direction: column;
    gap: 10px;
    opacity: 0;
    transform: translateY(20px);
    animation: cardReveal 0.6s ease-out forwards;
}

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

.analysis-card h3,
.analysis-card h4,
.analysis-card h5 {
    color: var(--text-highlight);
    margin-bottom: 5px;
}

.analysis-card p {
    font-size: 0.95em;
}

.analysis-card.loading {
    text-align: center;
    align-items: center;
}

/* Loader animation */
.loader {
    border: 4px solid var(--loader-secondary);
    border-top: 4px solid var(--loader-primary);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 10px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.analysis-card.error {
    background-color: rgba(255, 0, 0, 0.3);
    border-color: rgba(255, 0, 0, 0.5);
}

.risk-level-low {
    color: var(--risk-low);
    font-weight: bold;
    text-shadow: 0 0 5px var(--risk-low);
}
.risk-level-moderate {
    color: var(--risk-moderate);
    font-weight: bold;
    text-shadow: 0 0 5px var(--risk-moderate);
}
.risk-level-high {
    color: var(--risk-high);
    font-weight: bold;
    text-shadow: 0 0 5px var(--risk-high);
}

.chart-container {
    position: relative;
    height: 250px;
    width: 100%;
    margin-top: 15px;
    margin-bottom: 15px;
    background: var(--chart-bg);
    border-radius: var(--border-radius-nav);
    padding: 10px;
    box-sizing: border-box;
    transition: box-shadow 0.3s ease-in-out;
}

.chart-container:hover {
    box-shadow: 0 0 15px var(--glow-color);
}

.chart-canvas {
    display: block;
    max-width: 100%;
    max-height: 100%;
}

/* Analytics Dashboard Specifics */
#analytics-dashboard {
    min-height: 300px;
    background: rgba(60, 60, 90, 0.3);
    border-radius: var(--border-radius-nav);
    padding: 20px;
    border: 1px solid var(--border-color-light);
    box-shadow: inset 0 0 10px var(--shadow-color-inset);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.chart-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.model-explanation-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.analytics-card-placeholder {
    text-align: center;
    padding: 50px;
}

.analytics-chart.large-chart {
    height: 350px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        width: 95%;
        margin: 10px auto;
        padding: 15px;
    }

    .navbar {
        flex-direction: column;
        gap: 10px;
    }

    .nav-item {
        width: 100%;
        text-align: center;
    }

    .content-section h2 {
        font-size: 1.5em;
    }

    #analysis-card-container,
    .chart-row,
    .model-explanation-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav-item {
        font-size: 1em;
        padding: 8px 15px;
    }

    .content-section {
        padding: 15px;
    }
}