:root {
    --primary: #2C3E50;
    --accent: #E67E22;
    --bg-sand: #F4F1EA;
    --text: #1e293b;
    --text-muted: #64748b;
    --white: #ffffff;
    --glass: rgba(255, 255, 255, 0.82);
    --glass-border: rgba(255, 255, 255, 0.5);
    --shadow-soft: 0 10px 30px -10px rgba(0,0,0,0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background: var(--bg-sand); color: var(--text); line-height: 1.6; overflow-x: hidden; }
h1, h2, h3, h4 { font-family: 'Outfit', sans-serif; font-weight: 800; text-transform: uppercase; letter-spacing: -1px; color: var(--primary); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section-padding { padding: 100px 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }

/* --- Premium Dual-Tier Header --- */
.top-bar { background: #0f172a; color: #94a3b8; padding: 8px 0; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; }
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar span { display: flex; align-items: center; gap: 8px; }
.top-bar i { color: var(--accent); }

header { 
    background: var(--glass); 
    backdrop-filter: blur(15px); 
    -webkit-backdrop-filter: blur(15px);
    padding: 12px 0; 
    position: sticky; 
    top: 0; 
    z-index: 1000; 
    border-bottom: 1px solid var(--glass-border);
    transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

nav { display: flex; justify-content: space-between; align-items: center; }
.logo { text-decoration: none; display: flex; flex-direction: column; }
.logo-main { font-family: 'Outfit', sans-serif; font-size: 1.6rem; font-weight: 900; color: var(--primary); display: flex; align-items: center; gap: 10px; line-height: 1; }
.logo-sub { font-size: 0.65rem; font-weight: 800; color: var(--accent); letter-spacing: 2px; margin-top: 4px; padding-left: 38px; }

.nav-links { display: flex; align-items: center; gap: 35px; }
.nav-links a { 
    text-decoration: none; 
    color: var(--primary); 
    font-weight: 800; 
    font-size: 0.85rem; 
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    padding: 10px 0;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: 0.3s;
}
.nav-links a:hover::after { width: 100%; }
.nav-links a:hover { color: var(--accent); }

.nav-cta { background: var(--accent); color: white !important; padding: 12px 28px !important; border-radius: 8px; box-shadow: 0 4px 15px rgba(230, 126, 34, 0.3); }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(230, 126, 34, 0.4); }
.nav-cta::after { display: none !important; }

.hero { background: linear-gradient(rgba(44, 62, 80, 0.85), rgba(44, 62, 80, 0.75)), url('../assets/images/smyrna_tn_hvac_truck.png'); background-size: cover; background-position: center; color: white; padding: 180px 0; text-align: center; }
.hero h1 { font-size: 4.5rem; color: white; margin-bottom: 25px; line-height: 1.1; }
.hero p { font-size: 1.3rem; max-width: 800px; margin: 0 auto 40px; color: #f1f5f9; }

.cta-button { background: var(--accent); color: white; padding: 20px 40px; border-radius: 50px; text-decoration: none; font-weight: 800; display: inline-flex; align-items: center; gap: 12px; transition: 0.3s; border: none; font-size: 1.1rem; cursor: pointer; }
.cta-button:hover { transform: translateY(-5px); box-shadow: 0 10px 25px rgba(230, 126, 34, 0.5); }

.glass { background: var(--glass); backdrop-filter: blur(12px); border: 1px solid var(--glass-border); padding: 40px; border-radius: 30px; box-shadow: 0 15px 35px rgba(0,0,0,0.05); }
.card-3d { transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
.card-3d:hover { transform: translateY(-15px) rotateX(2deg); box-shadow: 0 30px 60px rgba(0,0,0,0.1); }

.trust-badge { text-align: center; padding: 40px; background: white; border-radius: 25px; transition: 0.3s; border-bottom: 6px solid #e2e8f0; }
.trust-badge:hover { border-bottom-color: var(--accent); }
.trust-badge i { font-size: 3rem; color: var(--accent); margin-bottom: 20px; }

.sidebar { background: white; padding: 40px; border-radius: 25px; position: sticky; top: 100px; }
.sidebar h3 { margin-bottom: 25px; font-size: 1.4rem; }

footer { background: #1a252f; color: #cbd5e1; padding: 100px 0 30px; }
footer h3 { color: white; margin-bottom: 25px; font-size: 1.5rem; }
footer a { color: #94a3b8; text-decoration: none; transition: 0.3s; }
footer a:hover { color: var(--accent); }
footer .footer-bottom { margin-top: 80px; padding-top: 30px; border-top: 1px solid #334155; text-align: center; font-size: 0.85rem; }

.sticky-call { position: fixed; bottom: 0; width: 100%; background: var(--accent); color: white; text-align: center; padding: 18px; font-weight: 900; z-index: 2000; text-decoration: none; display: none; font-size: 1.2rem; }
@media (max-width: 991px) { .hero h1 { font-size: 3rem; } .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } .hero h1 { font-size: 2.5rem; } .sticky-call { display: block; } .nav-links { display: none; } }