:root {
    --at-navy: #1a2a3a;
    --at-gold: #b59b6d;
    --at-white: #ffffff;
    --at-grey: #f4f4f4;
    --at-text: #333333;
}

/* Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Montserrat', sans-serif; color: var(--at-text); background: var(--at-white); }

/* Layout */
.at-container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.at-section { padding: 80px 0; }
.at-bg-light { background: var(--at-grey); }

/* Navigasi */
.at-navbar { background: rgba(255,255,255,0.95); padding: 15px 0; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.nav-flex { display: flex; justify-content: space-between; align-items: center; }
.at-logo { height: 45px; }
.at-nav-links a { text-decoration: none; color: var(--at-navy); margin-left: 20px; font-weight: 600; font-size: 0.9rem; }
.at-btn-cta { background: var(--at-navy); color: white !important; padding: 8px 20px; border-radius: 25px; }

/* Hero */
.at-hero { text-align: center; padding: 100px 20px; background: white; }
.at-hero__title { font-family: 'Playfair Display', serif; font-size: 2.5rem; margin-bottom: 20px; }
.at-hero__desc { font-size: 1.1rem; color: #666; margin-bottom: 30px; max-width: 600px; margin-left: auto; margin-right: auto; }
.at-btn-primary { background: var(--at-navy); color: white; padding: 15px 35px; border-radius: 30px; text-decoration: none; font-weight: 600; }

/* Portfolio Grid */
.at-section-title { text-align: center; font-family: 'Playfair Display', serif; font-size: 2rem; margin-bottom: 50px; }
.at-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.at-card { background: white; border-radius: 15px; overflow: hidden; box-shadow: 0 10px 25px rgba(0,0,0,0.05); transition: 0.3s; }
.at-card:hover { transform: translateY(-10px); }
.at-card__img { height: 250px; background-size: cover; background-position: center; }
.at-card__content { padding: 20px; text-align: center; }
.at-btn-demo { display: inline-block; margin-top: 15px; color: var(--at-gold); text-decoration: none; font-weight: 600; border: 1px solid var(--at-gold); padding: 8px 20px; border-radius: 20px; }

/* Pricing */
.at-pricing-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 30px; }
.at-price-box { background: white; padding: 40px; border-radius: 20px; width: 100%; max-width: 350px; text-align: center; border: 1px solid #eee; position: relative; }
.at-price-box--featured { border: 2px solid var(--at-gold); transform: scale(1.05); }
.at-price { font-size: 3rem; font-weight: bold; margin: 20px 0; }
.at-features { list-style: none; text-align: left; margin-bottom: 30px; }
.at-features li { margin-bottom: 10px; font-size: 0.9rem; }
.at-badge { position: absolute; top: -15px; left: 50%; transform: translateX(-50%); background: var(--at-gold); color: white; padding: 5px 20px; border-radius: 15px; font-size: 0.8rem; }
.at-btn-select { display: block; padding: 12px; background: #eee; text-decoration: none; color: var(--at-text); border-radius: 10px; font-weight: 600; }
.at-btn-select--gold { background: var(--at-gold); color: white; }

/* Footer */
.at-footer { text-align: center; padding: 40px; background: var(--at-navy); color: white; font-size: 0.8rem; }

/* Mobile Adjustment */
@media (max-width: 768px) {
    .at-hero__title { font-size: 1.8rem; }
    .at-nav-links a:not(.at-btn-cta) { display: none; } /* Sorok link lain kat mobile */
    .at-price-box--featured { transform: scale(1); }
}