/*
Custom Styles for FRA-INSIGHT
Theme: "Predictive Power Grid"
*/

:root {
    --primary: #0047AB; /* Electric Blue */
    --secondary: #00B386; /* Eco Green */
    --accent: #FFD700; /* Energy Yellow */
    --bg-light: #F7FAFC; /* Soft Gray White */
    --text-primary: #1A1A1A;
    --text-secondary: #4A5568;
    --card-bg: #FFFFFF;
    --border-radius: 0.5rem;
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 20px rgba(0,0,0,0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-primary);
}

.navbar-custom {
    background-color: var(--card-bg);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
}

.navbar-custom .navbar-brand {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 1.75rem;
    color: var(--primary);
}

.navbar-custom .navbar-brand i {
    margin-right: 0.5rem;
}

.navbar-custom .nav-link {
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    color: var(--text-secondary);
    margin: 0 0.5rem;
    border-radius: 0.25rem;
    transition: color 0.3s ease, background-color 0.3s ease;
}

.navbar-custom .nav-link:hover, 
.navbar-custom .nav-link.active {
    color: var(--primary);
    background-color: rgba(0, 71, 171, 0.05);
}

.body-content {
    padding: 2rem 0;
}

.page-title {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.card-title {
    color: var(--primary);
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 0.25rem;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.btn-primary:hover {
    background-color: #003a8c;
    border-color: #003a8c;
}

.btn-secondary {
    background-color: var(--secondary);
    border-color: var(--secondary);
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 0.25rem;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.btn-secondary:hover {
    background-color: #009a72;
    border-color: #009a72;
}

.kpi-card {
    text-align: center;
    padding: 2rem;
}

.kpi-number {
    font-family: 'Roboto Mono', monospace;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
}

.kpi-label {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.footer {
    background-color: var(--card-bg);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
    box-shadow: 0 -4px 12px rgba(0,0,0,0.04);
}

/* Plotly chart container */
.chart-container {
    min-height: 450px;
    width: 100%;
}