:root {
    --slate: #2c3e50;
    --accent-blue: #34495e;
    --safe-green: #27ae60;
    --light: #f5f5f5; 
    --card-bg: #eeeeee; 
    --header-bg: #e0e0e0;
    --text-main: #333333;
    --border-color: #d1d1d1;
    --hero-overlay: rgba(44, 62, 80, 0.85);
}

@media (prefers-color-scheme: dark) {
    :root {
        --light: #121212;
        --card-bg: #1e1e1e;
        --header-bg: #1a1a1a;
        --text-main: #e0e0e0;
        --border-color: #333333;
        --slate: #ecf0f1;
        --accent-blue: #bdc3c7;
        --hero-overlay: rgba(0, 0, 0, 0.75);
    }
}

* { box-sizing: border-box; }
body { font-family: 'Helvetica', 'Arial', sans-serif; line-height: 1.6; margin: 0; color: var(--text-main); background: var(--light); transition: background 0.3s, color 0.3s; }

.global-nav { background: var(--header-bg); border-bottom: 1px solid var(--border-color); padding: 15px 20px; }
.nav-container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; margin: 0 auto; max-width: 1100px; padding: 0 15px; }
.nav-logo { font-weight: bold; color: var(--slate); font-size: 1.1rem; }
.nav-links { list-style: none; margin: 0; padding: 0; display: flex; gap: 20px; }
.nav-links a { text-decoration: none; font-size: 0.95rem; transition: color 0.2s; }
.nav-links a.active { color: var(--slate); font-weight: bold; border-bottom: 2px solid var(--slate); padding-bottom: 4px; }
.nav-links a.inactive { color: var(--accent-blue); font-weight: normal; }

.hero { 
    background: linear-gradient(var(--hero-overlay), var(--hero-overlay)), url('../img/living.jpg'); 
    background-size: cover; background-position: center; color: white; padding: 60px 20px; text-align: center;
}
.hero h1 { font-size: 1.8rem; margin: 0; text-transform: uppercase; letter-spacing: 2px; }
.hero .tagline { font-size: 1.4rem; font-weight: bold; border-top: 1px solid rgba(255,255,255,0.3); display: inline-block; padding-top: 10px; margin-top: 15px; }

.container { max-width: 1100px; margin: 20px auto; padding: 0 15px; }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 30px 0; }
.gallery img { width: 100%; height: 250px; object-fit: cover; border-radius: 4px; border: 1px solid var(--border-color); }
.pricing-section { background: var(--card-bg); padding: 20px; border-radius: 8px; border: 1px solid var(--border-color); margin-bottom: 40px; }
.table-container { overflow-x: auto; margin-top: 20px; border-radius: 8px; margin-bottom: 20px; }
table { width: 100%; border-collapse: collapse; }
th { background: var(--header-bg); color: var(--slate); padding: 10px; text-align: left; font-size: 0.85rem; }
td { padding: 10px; border-bottom: 1px solid var(--border-color); font-size: 0.85rem; }

.avg-cost-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; margin: 20px 0 40px 0; }
.cost-card { background: var(--header-bg); padding: 15px; border-radius: 8px; text-align: center; border: 1px solid var(--border-color); }
.cost-card h4 { margin: 0 0 8px 0; color: var(--slate); font-size: 0.8rem; }
.cost-value { font-size: 1rem; font-weight: bold; color: var(--accent-blue); }
.cost-card p { font-size: 0.75rem; margin: 8px 0 0 0; color: var(--text-main); }

.alert-box { padding: 20px; border-radius: 8px; margin: 20px 0; border-left: 6px solid; }
.cleaning-services { background: rgba(46, 204, 113, 0.1); border-color: var(--slate); }
.disclaimer-box { border-left: 6px solid; padding: 20px; border-radius: 8px; margin: 20px 0; background: rgba(52, 73, 94, 0.05); border-color: var(--accent-blue); }
.disclaimer-text { font-size: 0.8rem; color: var(--accent-blue); font-style: italic; margin-top: 20px; padding: 15px; border-top: 1px solid var(--border-color); }
.faq-item { margin-bottom: 15px; background: var(--card-bg); padding: 15px; border-radius: 8px; border: 1px solid var(--border-color); }
.faq-item h3 { margin-top: 0; color: var(--slate); font-size: 0.95rem; }

.btn { background: #2c3e50; color: white; padding: 15px 30px; text-decoration: none; border-radius: 4px; font-weight: bold; display: inline-block; width: 100%; max-width: 300px; border: none; cursor: pointer; text-align: center; }

.blog-post { margin-bottom: 20px; background: var(--card-bg); padding: 20px; border-radius: 8px; border: 1px solid var(--border-color); overflow: hidden; }
.blog-post h1, .blog-post h2, .blog-post h3 { color: var(--slate); margin-top: 25px; }
.blog-post p { margin-bottom: 15px; }
.blog-post ul { margin-bottom: 20px; padding-left: 20px; }
.blog-post li { margin-bottom: 10px; }
.blog-post a { color: var(--slate); text-decoration: none; }
.blog-post a:hover { text-decoration: underline; }

footer { text-align: center; padding: 40px 20px; background: var(--header-bg); font-size: 0.8rem; }

@media (max-width: 768px) {
    .gallery { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
    .gallery img { height: 180px; }
    .nav-container { justify-content: center; flex-direction: column; gap: 10px; text-align: center; }
}

@media (max-width: 600px) {
    .nav-links { flex-direction: column; gap: 10px; margin-top: 10px; }
    .hero h1 { font-size: 1.5rem; }
    .hero .tagline { font-size: 1.1rem; }
    .gallery { grid-template-columns: 1fr; }
    .gallery img { height: 200px; }
    
    .table-container {
        overflow-x: auto;
        display: block;
        width: 100%;
    }
    
    table {
        min-width: 500px;
    }
}