:root {
            --glass-bg: rgba(22, 27, 34, 0.8);
            --glass-border: rgba(255, 255, 255, 0.1);
            --accent-color: #75a838;
        }

        body { 
            background: radial-gradient(circle at center, #1c2128, #0d1117);
            color: #f0f6fc; 
            height: 100vh; 
            display: flex; 
            align-items: center; 
            justify-content: center; 
            margin: 0;
            font-family: 'Inter', sans-serif;
        }

        .login-card { 
            background: var(--glass-bg); 
            backdrop-filter: blur(15px) saturate(180%);
            -webkit-backdrop-filter: blur(15px) saturate(180%);
            border: 1px solid var(--glass-border); 
            padding: 3rem; 
            border-radius: 20px; 
            width: 100%; 
            max-width: 420px; 
            text-align: center;
            box-shadow: 0 20px 50px rgba(0,0,0,0.5);
        }

        .login-logo { 
            max-width: 200px; 
            max-height: 120px;
            margin-bottom: 30px; 
            object-fit: contain;
            filter: drop-shadow(0 0 10px rgba(88, 166, 255, 0.3));
        }

        .form-control { 
            background: rgba(13, 17, 23, 0.8) !important; 
            border: 1px solid var(--glass-border) !important; 
            color: #ffffff !important; 
            padding: 14px;
            border-radius: 10px;
        }
        .form-control:focus {
            border-color: var(--accent-color) !important;
            box-shadow: 0 0 0 4px rgba(88, 166, 255, 0.15) !important;
        }
        .form-control::placeholder {
            color: #75a838 !important;
        }

        .btn-primary { 
            background: linear-gradient(135deg, #238636, #2ea043); 
            border: none; 
            padding: 14px;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            border-radius: 10px;
            margin-top: 10px;
        }
        .btn-primary:hover { 
            background: linear-gradient(135deg, #2ea043, #3fb950);
            transform: translateY(-1px);
        }

        label {
            display: block;
            text-align: left;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            color: #ffffff !important;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }

        .text-muted {
            color: #c9d1d9 !important;
            font-size: 0.75rem;
            text-align: left;
            margin-top: 8px;
            font-weight: 500;
        }

        .error-box {
            background: rgba(248, 81, 73, 0.15);
            color: #ff7b72;
            border: 1px solid rgba(248, 81, 73, 0.3);
            padding: 12px;
            border-radius: 8px;
            margin-bottom: 25px;
            font-size: 0.9rem;
            font-weight: 600;
        }

        h2.text-info {
            color: var(--accent-color) !important;
            font-weight: 900;
            letter-spacing: 2px;
            text-shadow: 0 0 15px rgba(88, 166, 255, 0.4);
        }