:root {
    --primary: #0a192f;
    --accent: #64ffda;
    --surface: #112240;
    --text: #ccd6f6;
    --font-main: 'Roboto', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

body {
    background-color: var(--primary);
    color: var(--text);
    font-family: var(--font-main);
    overflow-x: hidden;
    user-select: none;
    transition: background-color 0.3s, color 0.3s;
}

#particles-canvas {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1; pointer-events: none;
}

.main-header { padding: 40px 20px; text-align: center; }
.logo-placeholder {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.2rem;
    color: var(--accent);
    border: 2px solid var(--accent);
    padding: 15px 30px;
    display: inline-block;
    box-shadow: 0 0 15px var(--accent);
    cursor: pointer;
    transition: all 0.3s;
}

.main-nav { 
    background: rgba(17, 34, 64, 0.9); 
    backdrop-filter: blur(10px);
    position: sticky; top: 0; z-index: 100;
    border-bottom: 1px solid var(--accent);
}

.nav-links { display: flex; justify-content: space-around; padding: 10px; }
.nav-links button {
    background: none; border: none; color: var(--text);
    font-size: 0.8rem; text-transform: uppercase; font-weight: bold;
    padding: 12px; cursor: pointer;
}

.pricing-grid, .product-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 20px; 
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.price-card {
    background: var(--surface); padding: 30px; border-radius: 12px;
    border: 1px solid var(--accent); text-align: center; transition: transform 0.3s;
    display: flex; flex-direction: column; justify-content: space-between;
}

.price-card:hover { transform: translateY(-5px); box-shadow: 0 5px 15px var(--accent); }
.price-card img { width: 100%; height: auto; max-height: 250px; object-fit: contain; background: #000; border-radius: 5px; margin-bottom: 15px; }

.description { font-size: 0.9rem; color: var(--text); opacity: 0.8; margin: 10px 0; line-height: 1.4; }
.price { font-size: 2rem; color: var(--text); margin: 15px 0; font-family: 'Orbitron'; }

.info-block h4 { margin-top: 15px; color: var(--accent); font-family: 'Orbitron'; }
.info-block span { color: var(--accent); margin-right: 5px; }

.btn-checkout { background: #25d366; color: #fff; border: none; padding: 15px; font-weight: bold; cursor: pointer; width: 100%; border-radius: 4px; margin-top: 20px; }
.btn-del { background: #ff4b2b; color: white; border: none; padding: 4px 10px; border-radius: 4px; cursor: pointer; font-size: 0.8rem; }

.shop-nav { display: flex; overflow-x: auto; padding: 20px; gap: 10px; }
.cat-tab { border: 1px solid var(--accent); color: var(--accent); padding: 10px 20px; border-radius: 5px; white-space: nowrap; cursor: pointer; }

.admin-overlay { position: fixed; inset: 0; background: rgba(2,12,27,0.98); z-index: 2000; display: flex; align-items: center; justify-content: center; }
.admin-box { background: var(--surface); padding: 30px; width: 90%; max-width: 500px; border-radius: 10px; max-height: 90vh; overflow: hidden; display: flex; flex-direction: column; border: 1px solid var(--accent); }
.admin-scroll { overflow-y: auto; }
.admin-group { margin-bottom: 20px; padding: 15px; border: 1px solid var(--accent); }
.admin-group label { display: block; margin-top: 10px; font-size: 14px; color: var(--accent); }

input, select { width: 100%; padding: 12px; margin: 8px 0; background: var(--primary); border: 1px solid var(--accent); color: var(--text); border-radius: 5px; }
input[type="color"] { height: 45px; cursor: pointer; padding: 2px; }

.btn-buy { background: var(--accent); color: var(--primary); border: none; padding: 15px; font-weight: bold; cursor: pointer; width: 100%; border-radius: 4px; }
.btn-close { background: #444; color: #fff; border: none; padding: 10px; margin-top: 10px; width: 100%; cursor: pointer; }
.section-title { text-align: center; margin: 20px 0; font-family: 'Orbitron'; color: var(--accent); }