:root {
            --bg-primary: #1a1a2e;
            --bg-secondary: #16213e;
            --bg-card: #0f3460;
            --text-primary: #e94560;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            background: var(--bg-primary);
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .login-container {
            background: var(--bg-secondary);
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
            padding: 40px;
            width: 100%;
            max-width: 400px;
        }
        
        .login-header {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .login-header h2 {
            color: var(--text-primary);
            font-weight: bold;
            margin-bottom: 10px;
        }
        
        .login-header p {
            color: #a0a0b0;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-label {
            color: #fff;
            margin-bottom: 8px;
            display: block;
        }
        
        .form-control {
            background: var(--bg-primary);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #fff;
            padding: 12px;
            border-radius: 10px;
        }
        
        .form-control:focus {
            background: var(--bg-primary);
            border-color: var(--text-primary);
            color: #fff;
            box-shadow: 0 0 0 0.2rem rgba(233, 69, 96, 0.25);
        }
        
        .btn-login {
            background: var(--text-primary);
            color: #fff;
            padding: 12px;
            border-radius: 10px;
            width: 100%;
            border: none;
            font-size: 1.1em;
            font-weight: bold;
            transition: all 0.3s;
        }
        
        .btn-login:hover {
            background: #c73e54;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(233, 69, 96, 0.4);
        }
        
        .alert {
            border-radius: 10px;
            text-align: center;
        }
        
        .password-toggle {
            position: relative;
        }
        
        .password-toggle .toggle-icon {
            position: absolute;
            right: 15px;
            top: 42px;
            color: #a0a0b0;
            cursor: pointer;
            z-index: 10;
        }
        
        .logo {
            font-size: 3em;
            color: var(--text-primary);
            margin-bottom: 15px;
        }
        
        .back-link {
            color: #a0a0b0;
            text-decoration: none;
            display: block;
            text-align: center;
            margin-top: 20px;
        }
        
        .back-link:hover {
            color: #fff;
        }