* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .login-container {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
            width: 100%;
            max-width: 450px;
            position: relative;
            overflow: hidden;
        }

        .login-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #2196F3, #21CBF3, #03A9F4);
        }

        .header {
            text-align: center;
            margin-bottom: 30px;
        }

        .logo-container {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-bottom: 20px;
            padding: 10px;
        }

        .logo {
            max-width: 100%;
            max-height: 120px;
            width: auto;
            height: auto;
            object-fit: contain;
            filter: drop-shadow(0 3px 5px rgba(0,0,0,0.1));
            border-radius: 8px;
        }

        h1 {
            color: #2c3e50;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 5px;
        }

        .subtitle {
            color: #7f8c8d;
            font-size: 16px;
            margin-bottom: 10px;
        }

        .welcome-text {
            background: linear-gradient(135deg, #2196F3, #21CBF3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-weight: 600;
            margin-bottom: 20px;
            text-align: center;
        }

        .form-group {
            margin-bottom: 25px;
            position: relative;
        }

        .input-icon {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #7f8c8d;
            font-size: 20px;
        }

        input {
            width: 100%;
            padding: 16px 16px 16px 50px;
            border: 2px solid #e9ecef;
            border-radius: 12px;
            font-size: 16px;
            background: #f8f9fa;
            transition: all 0.3s ease;
            outline: none;
        }

        input:focus {
            border-color: #2196F3;
            background: white;
            box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
            transform: translateY(-2px);
        }

        .password-toggle {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: #7f8c8d;
            cursor: pointer;
            font-size: 20px;
            padding: 5px;
        }

        .btn-login {
            width: 100%;
            padding: 16px;
            background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(33, 150, 243, 0.3);
            position: relative;
            overflow: hidden;
        }

        .btn-login:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(33, 150, 243, 0.4);
            background: linear-gradient(135deg, #1976D2 0%, #1565C0 100%);
        }

        .btn-login:active {
            transform: translateY(-1px);
        }

        .btn-login::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 5px;
            height: 5px;
            background: rgba(255, 255, 255, 0.5);
            opacity: 0;
            border-radius: 100%;
            transform: scale(1, 1) translate(-50%);
            transform-origin: 50% 50%;
        }

        .btn-login:focus:not(:active)::after {
            animation: ripple 1s ease-out;
        }

        @keyframes ripple {
            0% {
                transform: scale(0, 0);
                opacity: 0.5;
            }
            100% {
                transform: scale(20, 20);
                opacity: 0;
            }
        }

        .error {
            background: #f8d7da;
            color: #721c24;
            padding: 12px;
            border-radius: 8px;
            margin: 15px 0;
            text-align: center;
            border: 1px solid #f5c6cb;
            animation: shake 0.5s ease-in-out;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }

        .info-box {
            background: #e3f2fd;
            border: 1px solid #bbdefb;
            border-radius: 10px;
            padding: 15px;
            margin: 20px 0;
            text-align: center;
        }

        .info-box p {
            color: #1565c0;
            margin: 5px 0;
            font-size: 14px;
        }

        .footer {
            text-align: center;
            margin-top: 25px;
            color: #7f8c8d;
            font-size: 14px;
        }

        .pulse {
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.02); }
            100% { transform: scale(1); }
        }

        .features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin: 20px 0;
        }

        .feature {
            text-align: center;
            padding: 10px;
            background: #f8f9fa;
            border-radius: 8px;
            font-size: 14px;
            color: #495057;
        }

        .feature-icon {
            font-size: 20px;
            margin-bottom: 5px;
            display: block;
        }

        /* Адаптивность */
        @media (max-width: 480px) {
            .login-container {
                padding: 30px 20px;
                margin: 10px;
            }
            
            h1 {
                font-size: 24px;
            }
            
            input {
                padding: 14px 14px 14px 45px;
            }
            
            .logo {
                max-height: 100px;
            }
            
            .features {
                grid-template-columns: 1fr;
                gap: 10px;
            }
        }

        @media (max-width: 360px) {
            .logo {
                max-height: 80px;
            }
            
            h1 {
                font-size: 22px;
            }
        }