:root {
            --primary: #00f2fe;
            --secondary: #4facfe;
            --bg: #0b0e14;
            --card-bg: #161b22;
        }

        body {
            margin: 0;
            padding: 0;
            background: var(--bg);
            color: white;
            font-family: 'Inter', sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: var(--primary);
            filter: blur(150px);
            opacity: 0.2;
            top: 10%;
            left: 10%;
            z-index: -1;
        }

        .container {
            width: 90%;
            max-width: 450px;
            background: var(--card-bg);
            padding: 2rem;
            border-radius: 24px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.5);
            border: 1px solid rgba(255,255,255,0.05);
            text-align: center;
            position: relative;
        }

        h1 {
            font-family: 'Orbitron', sans-serif;
            font-size: 1.8rem;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 0.5rem;
        }

        .subtitle {
            font-size: 0.9rem;
            color: #8b949e;
            margin-bottom: 2rem;
        }

        .countdown {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 2rem;
            font-family: 'Orbitron', sans-serif;
        }

        .count-box {
            background: rgba(255,255,255,0.03);
            padding: 10px;
            border-radius: 12px;
            min-width: 60px;
        }

        .form-group {
            position: relative;
            margin-bottom: 1.5rem;
        }

        input {
            width: 100%;
            padding: 15px;
            background: #0d1117;
            border: 2px solid #30363d;
            border-radius: 12px;
            color: white;
            font-size: 1rem;
            box-sizing: border-box;
            transition: 0.3s;
        }

        input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
        }

        button {
            width: 100%;
            padding: 15px;
            background: linear-gradient(45deg, var(--secondary), var(--primary));
            border: none;
            border-radius: 12px;
            color: #000;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.3s;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(79, 172, 254, 0.4);
        }

        .total-info {
            margin-top: 1.5rem;
            font-size: 0.85rem;
            color: #8b949e;
        }

        #total {
            color: var(--primary);
            font-weight: bold;
        }