/* Custom CSS Variables */
:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-color: #1f2937;
    --light-bg: #f3f4f6;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

/* Global Styles */
body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
}

/* Navigation */
.navbar {
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

/* Hero Section */
.hero {
    padding: 8rem 0 5rem;
    background-color: var(--light-bg);
}

.hero h1 {
    color: var(--text-color);
    line-height: 1.2;
}

.hero .lead {
    color: #4b5563;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.75rem 2rem;
    font-weight: 500;
    transition: var(--transition);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-2px);
}

/* Calculators Section */
.calculators {
    padding: 5rem 0;
    background-color: var(--white);
}

.calculator-card {
    padding: 2rem;
    border-radius: 1rem;
    background-color: var(--white);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    height: 100%;
    transition: var(--transition);
}

.calculator-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.calculator-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.calculator-form .form-label {
    font-weight: 500;
    color: var(--text-color);
}

.calculator-form .form-control {
    border-radius: 0.5rem;
    padding: 0.75rem;
    border: 1px solid #e5e7eb;
}

.calculator-form .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.result {
    background-color: var(--light-bg);
    padding: 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    display: none;
}

/* Services Section */
.services {
    padding: 5rem 0;
    background-color: var(--white);
}

.service-card {
    padding: 2rem;
    border-radius: 1rem;
    background-color: var(--white);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.icon-box {
    width: 60px;
    height: 60px;
    background-color: var(--light-bg);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.icon-box i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background-color: var(--light-bg);
}

.contact-card {
    background-color: var(--white);
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.contact-item a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--primary-color);
}

/* Footer */
.footer {
    padding: 3rem 0;
    background-color: var(--white);
    border-top: 1px solid #e5e7eb;
}

.footer p {
    color: #6b7280;
}

.tagline {
    color: var(--primary-color);
    font-weight: 600;
    margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .service-card, .calculator-card {
        padding: 1.5rem;
    }
    
    .contact-card {
        padding: 2rem;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .btn-primary {
        width: 100%;
        margin-bottom: 1rem;
    }
}