:root {
            --bg-color: #000000;
            --card-bg: rgba(255, 255, 255, 0.05);
            --text-color: #ffffff;
            --accent: #ffffff;
            --glass-border: rgba(255, 255, 255, 0.1);
            --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.8);
        }

        .light-mode {
            --bg-color: #ffffff;
            --card-bg: rgba(0, 0, 0, 0.05);
            --text-color: #000000;
            --accent: #000000;
            --glass-border: rgba(0, 0, 0, 0.1);
            --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
        }

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

        body {
            font-family: 'Plus Jakarta Sans', sans-serif;
            background-color: #111;
            display: flex;
            justify-content: center;
            min-height: 100vh;
            color: var(--text-color);
        }

        /* Mobile Frame for Desktop */
        .app-container {
            width: 100%;
            max-width: 450px;
            background-color: var(--bg-color);
            min-height: 100vh;
            position: relative;
            transition: all 0.3s ease;
            box-shadow: 0 0 40px rgba(0,0,0,1);
            overflow-y: auto;
        }

        header {
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            backdrop-filter: blur(15px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--glass-border);
            background: rgba(0,0,0,0.2);
        }

        .logo { font-weight: 800; font-size: 1.2rem; letter-spacing: 2px; }
        nav a { color: var(--text-color); text-decoration: none; margin-left: 15px; font-size: 0.8rem; font-weight: 600; opacity: 0.7; }

        .banner-wrapper { padding: 20px; text-align: center; }
        .banner-img {
            width: 100%;
            aspect-ratio: 1/1;
            border-radius: 15px;
            padding: 2px;
            background: linear-gradient(45deg, #ff000033, #00ff0033, #0000ff33);
            border: 1px solid rgba(255,255,255,0.1);
            box-shadow: 0 0 15px rgba(255,255,255,0.05);
        }

        .search-area { padding: 0 20px; }
        .glass-input {
            width: 100%;
            padding: 18px;
            border-radius: 15px;
            border: 1px solid var(--glass-border);
            background: var(--card-bg);
            color: var(--text-color);
            font-size: 1rem;
            margin-bottom: 12px;
            outline: none;
            text-align: center;
        }

        .btn-glow {
            width: 100%;
            padding: 18px;
            border-radius: 15px;
            border: none;
            background: var(--text-color);
            color: var(--bg-color);
            font-weight: 800;
            cursor: pointer;
            transition: 0.3s;
            box-shadow: 0 4px 15px rgba(255,255,255,0.1);
        }

        .btn-glow:active { transform: scale(0.98); }

        #result { padding: 20px; }
        .user-card {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 25px;
            animation: fadeIn 0.4s ease;
            backdrop-filter: blur(10px);
        }

        .row { display: flex; justify-content: space-between; margin-bottom: 12px; font-size: 0.9rem; }
        .val { font-weight: 600; color: #3498db; cursor: pointer; }

        .about-section { padding: 20px; font-size: 0.9rem; line-height: 1.7; opacity: 0.8; }
        
        footer {
            padding: 40px 20px;
            text-align: center;
            font-size: 0.75rem;
            opacity: 0.5;
            border-top: 1px solid var(--glass-border);
        }

        .theme-toggle {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 55px;
            height: 55px;
            border-radius: 50%;
            background: var(--text-color);
            color: var(--bg-color);
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            z-index: 1000;
            box-shadow: 0 10px 20px rgba(0,0,0,0.3);
            font-size: 1.5rem;
        }

        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
        
        .toast {
            position: fixed;
            bottom: 100px;
            left: 50%;
            transform: translateX(-50%);
            background: #2ecc71;
            color: white;
            padding: 10px 25px;
            border-radius: 30px;
            font-size: 0.8rem;
            display: none;
            z-index: 2000;
        }