* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Helvetica Neue', Arial, sans-serif; color: #333; line-height: 1.6; background: #fff; overflow-x: hidden; }

.tab-content { display: none; min-height: 75vh; }
.tab-content.active { display: block; }

.navbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 5%; background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky; top: 0; z-index: 1000;
}
.logo-link { display: flex; align-items: center; text-decoration: none; }
.nav-logo { height: 60px; width: auto; border-radius: 12px; }
.brand-name { font-size: 1.6rem; font-weight: bold; font-style: italic; color: #111; margin-left: 10px; }

.nav-links { list-style: none; display: flex; gap: 20px; align-items: center; }
.nav-links a { text-decoration: none; color: #444; font-weight: 600; cursor: pointer; }

.nav-contact-btn {
    background: #d32f2f !important;
    color: #fff !important;
    border: 2px solid #000 !important;
    padding: 8px 20px !important;
    border-radius: 5px;
}

.hero { position: relative; height: 80vh; display: flex; align-items: center; justify-content: center; color: white; text-align: center; background: #000; overflow: hidden; }
.slideshow { position: absolute; width: 100%; height: 100%; z-index: 1; }
.slide { position: absolute; width: 100%; height: 100%; background-size: cover; background-position: center; opacity: 0; animation: fadeSlideshow 15s infinite; }

.slide:nth-child(1) { animation-delay: 0s; }
.slide:nth-child(2) { animation-delay: 5s; }
.slide:nth-child(3) { animation-delay: 10s; }
@keyframes fadeSlideshow { 0% { opacity: 0; } 10% { opacity: 1; } 33% { opacity: 1; } 43% { opacity: 0; } 100% { opacity: 0; } }

.hero-content { position: relative; z-index: 2; background: rgba(0, 0, 0, 0.7); padding: 40px; border-radius: 15px; border-top: 5px solid #d32f2f; max-width: 800px; }
.hero h1 { font-size: 3.2rem; margin-bottom: 10px; }
.cta-button { display: inline-block; background: #d32f2f; color: white; padding: 18px 30px; text-decoration: none; font-weight: bold; border-radius: 5px; margin: 10px; font-size: 1.2rem; }
.cta-button.secondary { background: #fff; color: #333; }

.page-section { padding: 80px 10%; text-align: center; }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; max-width: 1100px; margin: 0 auto; }
.service-card { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 5px 15px rgba(0,0,0,0.05); text-align: left; }
.service-card img { width: 100%; height: 250px; object-fit: cover; }
.service-card h3 { padding: 20px 20px 5px; color: #d32f2f; font-size: 1.5rem; }
.service-card p { padding: 0 20px 20px; color: #666; font-size: 0.95rem; }

.guarantee-list { list-style: none; margin-top: 20px; text-align: left; max-width: 400px; margin-left: auto; margin-right: auto; }
.guarantee-list li { background: #f9f9f9; padding: 10px; margin-bottom: 5px; border-left: 4px solid #d32f2f; font-weight: bold; }

.gui-overlay {
    display: none; position: fixed; z-index: 2000;
    left: 0; top: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.85); justify-content: center; align-items: center;
}
.gui-content {
    background: #fff; padding: 40px; border-radius: 25px; text-align: center;
    width: 90%; max-width: 400px; position: relative; border: 3px solid #000;
}
.close-gui { position: absolute; right: 20px; top: 15px; font-size: 30px; cursor: pointer; }
.gui-btn {
    display: block; background: #d32f2f; color: white; padding: 16px;
    text-decoration: none; font-weight: bold; border-radius: 12px; margin-top: 15px;
}
.email-btn { background: #222; }

.main-footer { padding: 60px 5% 20px; background: #fff; border-top: 5px solid #d32f2f; }
.footer-grid { display: grid; grid-template-columns: 1fr 2fr 1fr; align-items: center; }
.footer-col-center { text-align: center; }
.footer-col-right { display: flex; justify-content: flex-end; }
.footer-insta-img { height: 130px; width: auto; }
.footer-bottom { margin-top: 40px; text-align: center; border-top: 1px solid #eee; padding-top: 20px; color: #888; }

@media (max-width: 768px) {
    .navbar { flex-direction: column; gap: 10px; }
    .service-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-col-right { justify-content: center; }
    .footer-col-left { display: none; }
    .hero h1 { font-size: 2rem; }
}