:root {
    --primary-red: #8B0000;
    --primary-blue: #1e3a8a;
    --dark-bg: #050505;
    --surface-bg: #0a0a0a;
    --text-main: #ffffff;
    --text-dim: #a0a0a0;
    --glass: rgba(255, 255, 255, 0.03);
    --border: rgba(255, 255, 255, 0.1);
    --gold: #FFD700;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', 'Segoe UI', sans-serif; scroll-behavior: smooth; }
body { background-color: var(--dark-bg); color: var(--text-main); line-height: 1.6; overflow-x: hidden; }

/* Navigation */
nav { position: fixed; top: 0; width: 100%; padding: 25px 8%; display: flex; justify-content: space-between; align-items: center; background: rgba(5, 5, 5, 0.7); backdrop-filter: blur(15px); z-index: 1000; border-bottom: 1px solid var(--border); }
.logo { font-size: 1.5rem; font-weight: 800; color: var(--primary-red); letter-spacing: 4px; text-transform: uppercase; }
nav ul { display: flex; list-style: none; }
nav ul li { margin-left: 30px; }
nav ul li a { text-decoration: none; color: white; transition: 0.3s; font-size: 0.8rem; letter-spacing: 2px; text-transform: uppercase; }
nav ul li a:hover { color: var(--primary-red); }

/* Hero - Menggunakan gitarku.jpg */
.hero { height: 100vh; background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('images/gitarku - Salin.jpg'); background-size: cover; background-position: center; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }
.hero h1 { font-size: 3.5rem; margin-bottom: 15px; letter-spacing: 8px; text-transform: uppercase; }
.btn { padding: 15px 35px; background: transparent; color: white; text-decoration: none; border: 1px solid var(--primary-red); font-weight: 500; transition: 0.4s; cursor: pointer; display: inline-block; margin-top: 30px; letter-spacing: 2px; }
.btn:hover { background: var(--primary-red); box-shadow: 0 0 20px rgba(139, 0, 0, 0.4); }

/* Sections */
section { padding: 100px 8%; max-width: 1200px; margin: auto; }
h2 { font-size: 2.5rem; text-align: center; margin-bottom: 50px; letter-spacing: 3px; color: var(--primary-red); }

/* Testimonials */
.testimonial-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 40px; }
.testi-card { background: var(--glass); padding: 30px; border: 1px solid var(--border); border-radius: 8px; }
.stars { color: var(--gold); margin-bottom: 10px; font-size: 1.2rem; }

/* Grid & Pricing */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.price-card { padding: 40px; border: 1px solid var(--border); border-radius: 2px; background: var(--surface-bg); text-align: center; }
.price { font-size: 2rem; color: var(--primary-red); font-weight: bold; margin: 20px 0; }

/* Modal */
.modal { display: none; position: fixed; z-index: 2000; left: 0; top: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.9); backdrop-filter: blur(10px); }
.modal-content { background: #0a0a0a; margin: 5% auto; padding: 40px; width: 90%; max-width: 500px; border: 1px solid var(--primary-red); }
.form-group { margin-bottom: 20px; }
.form-group input, .form-group select { width: 100%; padding: 15px; background: #000; border: 1px solid #333; color: white; }
.checkbox-group { display: flex; align-items: center; gap: 10px; color: var(--text-dim); margin-bottom: 20px; font-size: 0.9rem; }