:root {
            --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            --glass-bg: rgba(15, 15, 30, 0.7);
            --glass-border: rgba(255, 255, 255, 0.1);
            --text-primary: #ffffff;
            --text-secondary: #b8b8b8;
            --shadow-heavy: 0 15px 35px rgba(0, 0, 0, 0.7);
            --border-radius: 20px;
            --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: url('https://xatimg.com/image/oQ3NwUfKsSX1.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        body::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(356deg, rgba(10, 10, 20, 0.95) 0%, rgba(20, 20, 40, 0.95) 25%, rgba(15, 30, 60, 0.95) 50%, rgb(55 0 111 / 95%) 75%, rgb(0 0 0) 100%);
            z-index: 1;
        }

        .login-container {
            background: var(--glass-bg);
            backdrop-filter: blur(25px);
            border: 1px solid var(--glass-border);
            border-radius: var(--border-radius);
            padding: 40px;
            width: 100%;
            max-width: 420px;
            box-shadow: var(--shadow-heavy);
            position: relative;
            z-index: 2;
            animation: slideIn 0.6s ease-out;
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(-30px) scale(0.95);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }

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

        .login-header h1 {
            color: var(--text-primary);
            font-size: 2.2em;
            font-weight: 700;
            margin-bottom: 8px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .login-header p {
            color: var(--text-secondary);
            font-size: 1em;
        }

        .form-group {
            margin-bottom: 20px;
            position: relative;
        }

        .form-group label {
            display: block;
            color: var(--text-primary);
            font-weight: 500;
            margin-bottom: 8px;
            font-size: 0.95em;
        }

        .form-group label i {
            margin-right: 8px;
            color: #667eea;
        }

        .form-group input {
            width: 100%;
            padding: 15px 20px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            color: var(--text-primary);
            font-size: 1em;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }

        .form-group input:focus {
            outline: none;
            border-color: #667eea;
            background: rgba(255, 255, 255, 0.08);
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .form-group input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
            font-size: 0.9em;
        }

        .remember-me {
            display: flex;
            align-items: center;
            color: var(--text-secondary);
            cursor: pointer;
        }

        .remember-me input {
            margin-right: 8px;
            width: auto;
        }

        .forgot-password {
            color: #667eea;
            text-decoration: none;
            transition: var(--transition);
        }

        .forgot-password:hover {
            color: #764ba2;
        }

        .submit-btn {
            width: 100%;
            padding: 15px;
            background: var(--primary-gradient);
            border: none;
            border-radius: 12px;
            color: white;
            font-size: 1.1em;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
        }

        .submit-btn:active {
            transform: translateY(0);
        }

        .register-link {
            text-align: center;
            margin-top: 25px;
            color: var(--text-secondary);
        }

        .register-link a {
            color: #667eea;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
        }

        .register-link a:hover {
            color: #764ba2;
        }

        .error-message {
            background: rgba(255, 71, 87, 0.1);
            border: 1px solid rgba(255, 71, 87, 0.3);
            color: #ff4757;
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            font-size: 0.9em;
            text-align: center;
        }

        .success-message {
            background: rgba(46, 213, 115, 0.1);
            border: 1px solid rgba(46, 213, 115, 0.3);
            color: #2ed573;
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            font-size: 0.9em;
            text-align: center;
        }

        .back-to-home {
            position: absolute;
            top: 20px;
            left: 20px;
            z-index: 3;
        }

        .back-to-home a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            text-decoration: none;
            padding: 10px 15px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }

        .back-to-home a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.1);
        }

        @media (max-width: 480px) {
            .login-container {
                margin: 20px;
                padding: 30px 25px;
            }

            .login-header h1 {
                font-size: 1.8em;
            }

            .form-options {
                flex-direction: column;
                gap: 10px;
                align-items: flex-start;
            }
        }