/* Modern Clean Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: #333333;
    line-height: 1.6;
    background-color: #ffffff;
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    color: #0056b3;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

ul {
    list-style: none;
}

/* Header */
.site-header {
    background: #ffffff;
    border-bottom: 1px solid #e5e5e5;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo a {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1a1a1a;
}

.main-nav ul {
    display: flex;
    gap: 30px;
}

.main-nav a {
    color: #4a4a4a;
    font-weight: 500;
}

.main-nav a.active, .main-nav a:hover {
    color: #0056b3;
}

.header-cta .btn-phone {
    font-weight: 700;
    color: #0056b3;
    background: #eef4fc;
    padding: 10px 16px;
    border-radius: 6px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('../images/hero-water-heater.jpg') center/cover no-repeat;
    color: #ffffff;
    padding: 100px 0;
    text-align: center;
}

.hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 800;
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    color: #e2e2e2;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

/* Page Hero */
.page-hero {
    background: #f4f6f9;
    padding: 60px 0;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-primary {
    background: #0056b3;
    color: #ffffff;
}

.btn-primary:hover {
    background: #004085;
    color: #ffffff;
    text-decoration: none;
}

.btn-secondary {
    background: #6c757d;
    color: #ffffff;
}

.btn-secondary:hover {
    background: #5a6268;
    color: #ffffff;
    text-decoration: none;
}

.btn-outline {
    border: 2px solid #0056b3;
    color: #0056b3;
}

.btn-outline:hover {
    background: #0056b3;
    color: #ffffff;
    text-decoration: none;
}

.btn-large {
    font-size: 1.1rem;
    padding: 16px 32px;
}

/* Utility Classes */
.py-5 { padding: 60px 0; }
.mt-3 { margin-top: 15px; }
.mt-4 { margin-top: 20px; }
.mt-5 { margin-top: 30px; }
.text-center { text-align: center; }
.bg-light { background-color: #f8f9fa; }

/* Grids & Cards */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.card, .service-box, .address-card, .contact-details-box {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.card h3, .service-box h3 {
    margin-bottom: 15px;
    color: #1a1a1a;
}

.section-intro {
    text-align: center;
    max-width: 700px;
    margin: 15px auto 0;
    color: #666666;
}

h2 {
    font-size: 2rem;
    text-align: center;
    color: #1a1a1a;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 40px auto 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.faq-item {
    background: #ffffff;
    padding: 24px;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
}

.faq-item h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: #1a1a1a;
}

/* CTA Banner */
.cta-banner {
    background: #002b5c;
    color: #ffffff;
    padding: 80px 0;
}

.cta-banner h2 {
    color: #ffffff;
    margin-bottom: 15px;
}

.cta-banner p {
    color: #d1d5db;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

/* Footer */
.site-footer {
    background: #111827;
    color: #9ca3af;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.site-footer h3 {
    color: #ffffff;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.site-footer a {
    color: #9ca3af;
}

.site-footer a:hover {
    color: #ffffff;
}

.site-footer ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-bottom {
    border-top: 1px solid #1f2937;
    padding-top: 20px;
    font-size: 0.9rem;
}

/* Mobile Sticky CTA */
.mobile-sticky-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: #0056b3;
    z-index: 999;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.mobile-call-btn {
    display: block;
    color: #ffffff;
    text-align: center;
    padding: 16px;
    font-weight: 700;
    font-size: 1.1rem;
}

.mobile-call-btn:hover {
    color: #ffffff;
    text-decoration: none;
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid #e5e5e5;
        padding: 20px;
    }
    .main-nav.active {
        display: block;
    }
    .main-nav ul {
        flex-direction: column;
        gap: 15px;
    }
    .menu-toggle {
        display: block;
    }
    .header-cta {
        display: none;
    }
    .mobile-sticky-cta {
        display: block;
    }
    body {
        padding-bottom: 60px;
    }
}