* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .login-container {
            width: 100%;
            max-width: 480px;
            perspective: 1000px;
        }
        
        .login-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            padding: 40px;
            position: relative;
            transform-style: preserve-3d;
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        
        .login-card:hover {
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }
        
        .login-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(45deg, transparent, rgba(29, 185, 84, 0.1), transparent);
            transform: rotate(30deg);
            z-index: 0;
        }
        
        .card-content {
            position: relative;
            z-index: 1;
        }
        
        .logo {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .logo i {
            font-size: 42px;
            color: #1db954;
            background: rgba(29, 185, 84, 0.1);
            width: 80px;
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            margin: 0 auto 15px;
        }
        
        .logo h2 {
            font-size: 28px;
            font-weight: 600;
            color: #333;
            background: linear-gradient(45deg, #1db954, #1e90ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }
        
        .logo p {
            color: #777;
            font-size: 15px;
            font-weight: 300;
        }
        
        .form-group {
            margin-bottom: 25px;
            position: relative;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: #555;
            font-size: 14px;
        }
        
        .input-with-icon {
            position: relative;
        }
        
        .input-with-icon i {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #888;
            font-size: 18px;
        }
        
        .form-control {
            width: 100%;
            padding: 14px 20px 14px 50px;
            border: 1px solid #e0e0e0;
            border-radius: 12px;
            font-size: 16px;
            transition: all 0.3s ease;
            background-color: #f9fafb;
            color: #333;
        }
        
        .form-control:focus {
            outline: none;
            border-color: #1db954;
            box-shadow: 0 0 0 3px rgba(29, 185, 84, 0.2);
            background-color: #fff;
        }
        
        .form-control::placeholder {
            color: #aaa;
        }
        
        .password-toggle {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: #888;
            cursor: pointer;
            font-size: 18px;
        }
        
        .btn-login {
            width: 100%;
            padding: 15px;
            background: linear-gradient(45deg, #1db954, #1e90ff);
            border: none;
            border-radius: 12px;
            color: white;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(29, 185, 84, 0.3);
            margin-top: 10px;
            position: relative;
            overflow: hidden;
        }
        
        .btn-login:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(29, 185, 84, 0.4);
        }
        
        .btn-login:active {
            transform: translateY(0);
        }
        
        .btn-login::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: rgba(255, 255, 255, 0.1);
            transform: rotate(30deg);
            transition: all 0.6s ease;
        }
        
        .btn-login:hover::after {
            transform: rotate(30deg) translate(20%, 20%);
        }
        
        .links {
            display: flex;
            justify-content: space-between;
            margin-top: 25px;
            padding-top: 20px;
            border-top: 1px solid #eee;
        }
        
        .links a {
            text-decoration: none;
            color: #666;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            display: flex;
            align-items: center;
        }
        
        .links a:hover {
            color: #1db954;
        }
        
        .links a i {
            margin-right: 8px;
            font-size: 14px;
        }
        
        .alert {
            padding: 15px;
            border-radius: 12px;
            margin-bottom: 25px;
            font-size: 14px;
            display: flex;
            align-items: center;
        }
        
        .alert-success {
            background-color: rgba(29, 185, 84, 0.1);
            border: 1px solid rgba(29, 185, 84, 0.2);
            color: #1a7a46;
        }
        
        .alert-danger {
            background-color: rgba(255, 99, 132, 0.1);
            border: 1px solid rgba(255, 99, 132, 0.2);
            color: #d32f2f;
        }
        
        .alert i {
            margin-right: 10px;
            font-size: 20px;
        }
        
        .close {
            margin-left: auto;
            background: none;
            border: none;
            color: inherit;
            cursor: pointer;
            font-size: 18px;
        }
        
        .footer {
            text-align: center;
            margin-top: 30px;
            color: #888;
            font-size: 13px;
        }
        
        @media (max-width: 576px) {
            .login-card {
                padding: 30px 20px;
            }
            
            .links {
                flex-direction: column;
                gap: 12px;
            }
            
            .links a {
                justify-content: center;
            }
        }
        
        /* Animation for form elements */
        .form-group, .btn-login, .alert, .links {
            animation: fadeInUp 0.5s ease forwards;
            opacity: 0;
        }
        
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* Delay animations */
        .logo { animation: fadeIn 0.6s ease forwards; }
        .form-group:nth-child(1) { animation-delay: 0.2s; }
        .form-group:nth-child(2) { animation-delay: 0.3s; }
        .btn-login { animation-delay: 0.4s; }
        .links { animation-delay: 0.5s; }
        .footer { animation: fadeIn 0.8s ease forwards; }