/**
 * Professional Hydraulic Design Platform - Main Styles
 * Core application styles including variables, layout, and base components
 */

/* CSS Custom Properties (Variables) */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --light-bg: #f8f9fa;
    --dark-text: #2c3e50;
}

/* Base Layout Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-bg);
    color: var(--dark-text);
}

/* Navigation Styles */
.navbar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

/* Container Layout */
.main-container {
    margin-top: 2rem;
    margin-bottom: 2rem;
}

/* Footer Styles */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    .main-container {
        margin-top: 1rem;
        padding: 0 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
}