/* Global Variables & Reset */
:root {
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    --primary-text: #ffffff;
    --secondary-text: #e0e0e0;
    --accent-color: #00d2ff;
    --gradient-bg: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background: var(--gradient-bg);
    min-height: 100vh;
    color: var(--primary-text);
    overflow-x: hidden;
}

/* Glassmorphism Utility Class */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 16px;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #ffffff, #00d2ff);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.subtitle {
    color: var(--secondary-text);
    font-size: 1.1rem;
}

/* Section Controls */
.controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Grid Layout for Sectors */
.sector-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.card {
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: transform 0.3s ease, background 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.card h3 {
    margin-top: 1rem;
    font-size: 1.5rem;
    color: var(--accent-color);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Back Button */
.back-btn {
    position: fixed;
    top: 100px;
    right: 30px;
    z-index: 999;
    display: none;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.5px;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
    border-color: rgba(255, 255, 255, 0.5);
}

.back-btn:active {
    transform: translateY(0);
}


select {
    padding: 12px 24px;
    font-size: 1rem;
    color: var(--primary-text);
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    outline: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

select:hover {
    background: rgba(0, 0, 0, 0.4);
}

select option {
    background: #16213e;
    color: white;
}

/* Data Display Area */
.data-display {
    min-height: 400px;
    padding: 2rem;
}

/* Table Styles */
.table-container {
    padding: 1rem;
    overflow-x: auto;
    margin-bottom: 2rem;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    color: var(--primary-text);
}

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.data-table th {
    background: rgba(0, 210, 255, 0.1);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.data-table tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Chart Container */
.chart-container {
    padding: 1rem;
    margin-top: 2rem;
    height: 400px;
}

/* Loading State */
.loading {
    display: none;
    text-align: center;
    padding: 2rem;
    color: var(--accent-color);
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header {
        margin-bottom: 2rem;
        padding: 1.5rem 0;
    }

    h1 {
        font-size: 2rem;
        /* Reduced from 3rem */
        padding: 0 10px;
    }

    .subtitle {
        font-size: 0.9rem;
        padding: 0 10px;
    }

    .sector-grid {
        grid-template-columns: 1fr;
        /* Full Stack on Mobile */
        gap: 1.5rem;
    }

    .card {
        min-height: 150px;
        /* Reduced Height */
        padding: 1.5rem;
        flex-direction: row;
        /* Horizontal Flex for better mobile view? Or Keep Vertical */
        /* Let's keep vertical but smaller */
        flex-direction: column;
    }

    .card-icon {
        font-size: 2.5rem;
        margin-bottom: 0.5rem;
    }

    .card h3 {
        font-size: 1.25rem;
        margin-top: 0.5rem;
    }

    /* Table Responsive Scroll */
    .table-container {
        padding: 0.5rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.75rem 0.5rem;
        font-size: 0.85rem;
    }
}