/* Basic Reset & Body Styles */
:root {
    --primary-color: #0056b3; /* A shade of blue for plumbing */
    --secondary-color: #007bff; /* Lighter blue */
    --accent-color: #ffc107; /* Yellow for highlights */
    --text-color: #333;
    --light-bg: #f8f9fa;
    --dark-bg: #343a40;
    --white: #fff;
    --border-color: #ddd;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    margin: 0;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem 0;
    border-bottom: 5px solid var(--accent-color);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
}

header h1 {
    margin: 0;
    font-size: 1.8rem;
}

header nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
}

header nav li {
    margin-left: 20px;
}

header nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

header nav a:hover {
    color: var(--accent-color);
}

/* Hero Section */
.hero, .page-hero {
    background: linear-gradient(rgba(0, 86, 179, 0.8), rgba(0, 86, 179, 0.8)), url('https://via.placeholder.com/1920x600/0056b3/ffffff?text=Northside+Plumbing+Co.+Hero') no-repeat center center/cover; /* Placeholder image, replaced by CSS gradient */
    color: var(--white);
    text-align: center;
    padding: 80px 20px;
    margin-bottom: 40px;
}

.hero h2, .page-hero h2 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    line-height: 1.2;
}

.hero p, .page-hero p {
    font-size: 1.3rem;
    margin-bottom: 30px;
}

/* Buttons */
.button {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--primary-color);
    padding: 12px 25px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, color 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.button:hover {
    background-color: #e6b000; /* Slightly darker yellow */
    color: var(--primary-color);
}

.button.secondary {
    background-color: var(--secondary-color);
    color: var(--white);
}

.button.secondary:hover {
    background-color: #0069d9; /* Slightly darker blue */
}

/* Sections */
section {
    padding: 60px 0;
}

section h3 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.features, .services-overview, .service-details, .content-block, .contact-form-section {
    padding: 40px 0;
}

/* Features Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.feature-item {
    background-color: var(--light-bg);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    text-align: center;
}

.feature-item h4 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0;
}

/* Service Cards */
.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.service-card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-card h4 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0;
}

/* Service Details Page */
.service-details .service-item {
    background-color: var(--light-bg);
    padding: 30px;
    margin-bottom: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.03);
}

.service-details .service-item h3 {
    text-align: left;
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 15px;
}

/* About Page Content Blocks */
.content-block {
    padding: 40px 0;
}

.content-block.bg-light {
    background-color: var(--light-bg);
}

.content-block h3 {
    text-align: left;
    font-size: 2rem;
    margin-bottom: 25px;
    color: var(--primary-color);
}

.content-block ul {
    list-style: none;
    padding: 0;
}

.content-block ul li {
    background-color: var(--white);
    padding: 15px 20px;
    margin-bottom: 10px;
    border-left: 5px solid var(--secondary-color);
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.03);
}

.content-block ul li strong {
    color: var(--primary-color);
}

/* Call to Action Bottom */
.cta-bottom {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 60px 20px;
    margin-top: 40px;
}

.cta-bottom h3 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-bottom p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

/* Contact Form */
.contact-form-section {
    padding: 60px 0;
}

.contact-form-section h3 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: var(--primary-color);
}

#contactForm {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--light-bg);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: calc(100% - 20px); /* Account for padding */
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    box-sizing: border-box; /* Include padding in width */
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 5px;
    text-align: center;
    font-weight: bold;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Footer */
footer {
    background-color: var(--dark-bg);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
    margin-top: 60px;
}

footer p {
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        text-align: center;
    }

    header h1 {
        margin-bottom: 15px;
    }

    header nav ul {
        flex-direction: column;
    }

    header nav li {
        margin: 0 0 10px 0;
    }

    .hero h2, .page-hero h2 {
        font-size: 2rem;
    }

    .hero p, .page-hero p {
        font-size: 1rem;
    }

    section h3 {
        font-size: 1.8rem;
    }

    .cta-bottom h3 {
        font-size: 2rem;
    }

    .feature-grid, .service-cards {
        grid-template-columns: 1fr;
    }
}